Weights and Dimensions of Vehicles Regulations

made under subsection 191(1) of the

Motor Vehicle Act

R.S.N.S. 1989, c. 293

O.I.C. 2001-526 (effective November 15, 2001), N.S. Reg. 137/2001

as amended to O.I.C. 2020-065 (effective February 24, 2020), N.S. Reg. 32/2020

Table of Contents

Please note: this table of contents is provided for convenience of reference and does not form part of the regulations.
Click here to go to the text of the regulations.

Citation

Definitions

Allowable vehicle configurations

Dimensions

Interaxle spacing requirements

Passenger vehicles

Farm vehicles

Snow clearing equipment

Road building machinery

Class of highway weights

Vehicle permits

Special permits

Operation of vehicle in designated highway construction area

Truck prohibition

Penalties

Schedule A: Vehicle Weights and Dimensions Limits

Part 1—Vehicle Weight and Dimension Limits

A. General Dimensional Limits

B. Dimensional Controls - Wheelbases, Interaxle Spacings, Overhangs, Setback and Track Width

C. Axle Weight Limits

D. Other Weight Related Limits

E. Weight Related Tolerances

Part 2—Vehicle Weights and Dimensions Limits by Configuration

Category 1: Tractor Semi-trailer

Section 1 - Dimension Limits

Section 2 - Weight Limits

Category 2: A Train Double

Section 1 - Dimension Limits

Section 2 - Weight Limits

Category 3: B Train Double

Section 1 - Dimension Limits

Section 2 - Weight Limits

Category 4: C Train Double

Section 1 - Dimension Limits

Section 2 - Weight Limits

Category 5: img

Section 1 - Dimension Limits

Section 2 - Weight Limits

Category 6: Truck - Pony Trailer Combination

Section 1 - Dimension Limits

Section 2 - Weight Limits

Category 7: Tandem Steering Axle Truck - Pony Trailer Combination

Section 1 - Dimension Limits

Section 2 - Weight Limits

Category 8: Truck - Full Trailer Combination

Section 1 - Dimension Limits

Section 2 - Weight Limits

Category 9: Tandem Steering Axle Truck - Full Trailer Combination

Section 1 - Dimension Limits

Section 2 - Weight Limits

Category 10: Intercity Bus and Recreational Vehicles

Section 1 - Dimension Limits

Category 10: Intercity Bus and Recreational Vehicles

Section 2 - Weight Limits

Category 11: Stinger Steer Auto Carrier

Section 1 - Dimension Limits

Section 2 - Weight Limits

Category 12: Tractor Self-Steering Quad Axle Semi-trailer

Section 1 - Dimension Limits

Section 2 - Weight Limits

Schedule A-1: Maximum Semi-trailer Wheelbases

Schedule A-2: Pony Trailer Axle Weight Limits for Pony Trailers Model Year 2002 and Earlier

Schedule A-3: Semi-trailer Axle Weight Limits for Semi-trailers Model Year 2002 and Earlier

Schedule A-4 [repealed]

Schedule B [repealed]

Schedule C [repealed]

Schedule D [repealed]

Citation

1 These regulations may be cited as the Weights and Dimensions of Vehicles Regulations.

Definitions

2 In these regulations, unless the context otherwise requires,

Clause 2(a) repealed: O.I.C. 2010-5, N.S. Reg. 4/2010.

“1997 regulations” means the regulations respecting the weights and loads of vehicles approved by the Governor in Council by Order in Council 97-291 dated May 13, 1997;

“Act” means the Motor Vehicle Act;

“A-dolly” means a converter dolly that is towed from one hitch on the centre line of the towing vehicle;

“aerodynamic device” means a device mounted at the rear of a truck, truck tractor or trailer that is designed to reduce the drag associated with airflow around a moving vehicle and that meets all of the following criteria:

(i) any portion of the device more than 1.9 m above the ground does not protrude beyond a transverse plane starting from the rear bottom edge of the rear impact guard or, if not so equipped, the lowest point at the rear of the vehicle and intersecting with a point that is 1.74 m above the ground and 1.21 m behind the rear of the vehicle, and more than 1.52 m beyond the rear of the vehicle to which it is attached,

Subclause (i) of definition of “aerodynamic device” replaced: O.I.C. 2015-362, N.S. Reg. 364/2015.

(ii) any portion of the device within 1.9 m of the ground does not protrude,

Subclause (ii) of definition of “aerodynamic device” amended: O.I.C. 2015-362, N.S. Reg. 364/2015.

(iii) the device complies with Canadian Motor Vehicle Safety Standard 223, as amended, made under the Canadian Motor Vehicle Safety Act,

(iv) the device does not obstruct or diminish lighting and conspicuity markings required by the Act and its regulations,

(v) the device is not designed or used for carrying cargo,

(vi) the device is capable of being folded to within 0.305 m of the rear of the vehicle;

Subclause (vi) of definition of “aerodynamic device” added: O.I.C. 2015-362, N.S. Reg. 364/2015.

Definition of “aerodynamic device” added: O.I.C. 2010-5, N.S. Reg. 4/2010.

“amber warning light” means a warning light with a lens diameter of at least 12 cm and a flashing rate of 60 to 90 flashes per minute;

“A-train double” means a combination of vehicles composed of a tractor, a semi-trailer and either an A-dolly and a semi-trailer or a full trailer attached to the foremost semi-trailer in a like manner as if an A-dolly were used;

“axle” means an assembly of 2 or more wheels whose centres are in 1 transverse vertical plane and that transmits weight to the road;

“axle group” means

(i) a single axle,

(ii) a tandem axle,

(iii) a tandem equivalent axle,

(iv) a tridem axle,

(v) a tridem equivalent axle,

(vi) a triaxle, or

(vii) a self-steering quad axle;

Subclause (vii) of definition of “axle group” added: O.I.C. 2010-5, N.S. Reg. 4/2010.

“axle group weight” means the total weight transmitted to the road by an axle group;

“axle spread” means the longitudinal distance between the centres of extreme axles of an axle group;

“axle weight” means the weight transmitted to the road by an axle;

“box length” for a combination of vehicles, means the longitudinal distance from the foremost point of the cargo carrying unit(s) or cargo(s) to the rearmost part of the cargo carrying unit(s) or cargo(s), exclusive of any extension in the distance caused by auxiliary equipment or machinery at the front that is not designed or used for carrying cargo or by an aerodynamic device at the rear;

Definition of “box length” amended: O.I.C. 2010-5, N.S. Reg. 4/2010.

“B-train double” means a combination of vehicles composed of a tractor, a semi-trailer, and a second semi-trailer towed by the lower half of a fifth wheel assembly mounted on the rear of the foremost semi-trailer;

“C-dolly” means a converter dolly with a frame rigid in the horizontal plane that is towed from 2 hitches located in a horizontal transverse line on the towing unit, that precludes any rotation in the horizontal plane about the hitch points, and which satisfies all requirements of the Canadian Motor Vehicle Safety Standards applicable to such devices;

“converter dolly” means a vehicle unit that is designed and normally used to convert a semi-trailer to a full trailer;

“combination of vehicles” means 2 or more vehicles connected together;

“C-train double” means a combination of vehicles composed of a tractor, a semi-trailer, a C-dolly and a second semi-trailer;

“drawbar” means a structure connected to the chassis frame of a trailer or converter dolly that includes a device for coupling to a hitch on a towing vehicle;

“drawbar length” for a pony trailer, a full trailer or a converter dolly, means the longitudinal distance from the centre of a device that attaches to a hitch on the towing vehicle to the centre of the lower half of a fifth wheel assembly or turntable;

“drive axle” means the axle or axle group that is or may be connected to the power source of a motor vehicle and that transmits power to the wheels;

Definition of “dry bulk products” added: O.I.C. 2010-5, N.S. Reg. 4/2010; repealed: O.I.C. 2020-065, N.S. Reg. 32/2020.

“effective rear overhang” means the longitudinal distance from the centre of the rear axle or axle group on a truck or the geometric centre of the rear axle or axle group on a trailer to the rearmost point of the truck or trailer, including cargo, exclusive of any extension in the distance caused by an aerodynamic device at the rear;

Definition of “effective rear overhang” amended: O.I.C. 2010-5, N.S. Reg. 4/2010.

“fifth wheel assembly” means a coupling device for the purpose of supporting and towing a semi-trailer, whose lower half is composed of a plate and locking jaws and is mounted on the rear portion of a vehicle frame or the frame of a converter dolly and whose upper half is composed of a plate and a kingpin fastened to the underside of the forward portion of the semi-trailer;

“fifth wheel offset” for a tractor, means the longitudinal distance from the centre of the lower half of a fifth wheel assembly to the tractor turn centre;

“flashing amber light” means a warning light with a lens diameter of at least 10 cm and a flashing rate of 60 to 90 flashes per minute;

“front overhang” means the longitudinal distance from the front bumper, as installed by the manufacturer of the vehicle, to the foremost point on the vehicle or cargo, whichever is greater;

“full trailer” means a vehicle designed and used so that its weight and load is carried on its own axles, and includes a combination of vehicles consisting of a semi-trailer and a converter dolly;

“gross axle weight rating” means the value specified by the vehicle manufacturer as the load-carrying capacity of a single axle system, as measured at the tire-ground interfaces;

“gross vehicle weight” means the total weight transmitted to the road by a vehicle or combination of vehicles and cargo;

“gross vehicle weight rating” means the value specified by the vehicle manufacturer as the load-carrying capacity of a single vehicle, as measured at the tire-ground interfaces;

“hitch” means a device attached to a vehicle or converter dolly for towing another vehicle or converter dolly, and includes the lower half of a fifth wheel assembly;

“hitch offset” for a truck or a semi-trailer equipped with a hitch for towing a trailer or converter dolly, means the longitudinal distance from the turn centre of the truck or semi-trailer to the articulation point of the hitch;

“implement of husbandry” means a vehicle, with or without motive power, that is designed and used for agricultural purposes, and includes

(i) farm machinery,

(ii) a farm wagon,

(iii) a trailer when towed by a farm tractor or when towed unloaded by any other motor vehicle to or from a farm equipment dealer or repair facility

or to or from a field or farm, and

(iv) a farm tractor;

Definition of “implement of husbandry” replaced: O.I.C. 2006-547, N.S. Reg. 228/2006.

“interaxle spacing” means the longitudinal distance between the centre of the rearmost axle of an axle group and the centre of the foremost axle of the next axle group to the rear, within a vehicle or combination of vehicles;

“intercity bus” means a vehicle designed to carry more than 10 passengers and equipped with washroom facilities to allow extended travel without stopping;

“kingpin” means the pin that couples a semi-trailer to the lower half of a fifth wheel assembly;

“kingpin setback” means the horizontal distance from the vertical axis through the centre of the kingpin to the furthest point on the semi-trailer or cargo ahead of the kingpin;

“length” means

(i) for a full trailer, the external longitudinal distance from the foremost point of the cargo-carrying section of the full trailer or cargo to the rearmost point of the full trailer or cargo, exclusive of any extension in distance caused by equipment or machinery at the front that is not designed or used for carrying cargo or by an aerodynamic device at the rear,

Subclause (i) of definition of “length” amended: O.I.C. 2010-5, N.S. Reg. 4/2010.

(ii) for a pony trailer, the external longitudinal distance from the front foremost point of its drawbar or the foremost point on its cargo to the rearmost point of the pony trailer or cargo, exclusive of any extension in the distance caused by an aerodynamic device at the rear,

Subclause (ii) of definition of “length” amended: O.I.C. 2010-5, N.S. Reg. 4/2010.

(iii) for a semi-trailer, the external longitudinal distance from the front foremost point of the cargo-carrying section of the semi-trailer or cargo to the rearmost point of the semi-trailer or cargo, exclusive of any extension in distance caused by equipment or machinery at the front that is not designed or used for carrying cargo or by an aerodynamic device at the rear, and

Subclause (iii) of definition of “length” amended: O.I.C. 2010-5, N.S. Reg. 4/2010.

(iv) for a truck, the external longitudinal distance from the foremost point of the truck to the rearmost point of the truck, including cargo, exclusive of any extension in the distance caused by an aerodynamic device at the rear;

Subclause (iv) of definition of “length” amended: O.I.C. 2010-5, N.S. Reg. 4/2010.

“lift axle” means an axle fitted with a device operated by the vehicle operator that may adjust the amount of support provided to the load and may enable the axle to be removed from contact with the ground;

“liquid bulk products” mean products consisting of unpackaged free-flowing liquids that are loaded in an approved tanker trailer without being placed in bottles, bags, boxes, barrels, small tanks or any other similar containers, or hand-stowed, including all of the following:

(i) water,

(ii) milk,

(iii) petroleum products, including

(A) heating oil,

(B) fuel oil,

(iv) liquid fertilizer,

(v) liquid chemicals,

(vi) compressed gas, including

(A) liquid oxygen,

(B) propane;

Definition of “liquid bulk products” added: O.I.C. 2010-5, N.S. Reg. 4/2010.

“load equalization” means the static weight on axle groups does not vary by more than 1000 kg between adjacent axles;

Definition of “load equalization” amended: O.I.C. 2015-362, N.S. Reg. 364/2015.

“model year” means the year used to designate a discrete vehicle model irrespective of the calender year in which the vehicle was actually produced, as indicated by the vehicle manufacturer in the vehicle identification number;

“overall height” means the vertical distance between the highest point on the vehicle or combination of vehicles, including cargo, and the surface of the road;

“overall length” means the longitudinal distance from the foremost point of a vehicle or a combination of vehicles to the rearmost point of a vehicle or combination of vehicles, including cargo, exclusive of any extension in the distance caused by an aerodynamic device at the rear;

Definition of “overall length” amended: O.I.C. 2010-5, N.S. Reg. 4/2010.

“overall width” means the greatest transverse dimension of a vehicle or combination of vehicles, including cargo;

“pony trailer” means a vehicle with one axle group close to the centre of its chassis that carries the preponderance of its weight and load, and that is towed by a drawbar that is rigidly attached to the structure of the trailer;

“raw forest products” includes saw logs, pulpwood, stud wood, round wood, veneer wood, wood chips, hog fuel and Christmas trees;

Definition of “raw forest products” added: O.I.C. 2010-5, N.S. Reg. 4/2010.

“rear overhang” means the longitudinal distance from the rearmost point of the bed or body of a vehicle to the rearmost point of the cargo, exclusive of any extension in the distance caused by an aerodynamic device at the rear;

Definition of “rear overhang” amended: O.I.C. 2010-5, N.S. Reg. 4/2010.

“self-steering axle” means an axle whose wheels can steer in response to forces generated between its tires and the road, or through mechanisms and linkages that operate independently of the driver, regardless of whether the self-steering mechanism may be rendered inoperative;

“self-steering quad axle” means an axle group composed of a self-steering axle in front of and pneumatically connected to a tridem axle;

Definition of “self-steering quad axle” added: O.I.C. 2010-5, N.S. Reg. 4/2010.

“semi-trailer” means a vehicle of the trailer type so designed and used in conjunction with a motor vehicle that some part of its own weight and that of its own load rests upon or is carried by another vehicle;

“single axle” means 1 or more axles whose centres are included between 2 parallel transverse vertical planes up to but not including 1.2 m apart and that have the same number and size of tires on each side of the axle(s);

“special permit” means any special endorsement relating to dimensions or weight on a permit issued pursuant to the Act or on a temporary permit issued pursuant to the Act;

“steering axle” means an axle whose steering is controlled by the driver of a vehicle in order to control the direction of travel of the vehicle;

“tandem axle” means an axle group containing 2 consecutive axles that does not include any liftable or self-steering axles, and that has the same number and size of tires on each axle;

“tandem equivalent axle” means an axle group of 2 consecutive axles within a vehicle, one of which is a lowered lift axle, that has the same number and size of tires on each axle;

“tandem steering axle” means a tandem axle whose axles are both steering axles;

“tire” means that part of a wheel, roller or other contrivance for the moving of any object upon a highway that comes into direct contact with the surface of the road;

“tire load rating” means the maximum load that a tire is rated to carry at a given inflation pressure, as determined by the manufacturer and stamped on the side of the tire at the time of manufacture;

“tire loading” means the weight transmitted to the road by a tire;

“tolerance” means an axle weight that is permitted by these regulations in addition to other permitted axle weights;

“track width” means the overall width of an axle across the outside faces of the tires;

“tractor” means a motor vehicle designed and normally used to pull a semi-trailer, a semi-trailer and a full trailer or a semi-trailer and another semi-trailer;

“tractor semi-trailer” means a combination of vehicles composed of a tractor and a semi-trailer;

“tractor wheelbase” means the longitudinal distance from the centre of the steering axle to the geometric centre of the drive axle;

“trailer” means a semi-trailer, a full trailer or a pony trailer;

“trailer wheelbase” means the longitudinal distance from the centre of

(i) the kingpin of a semi-trailer,

(ii) the turntable of a full trailer, or

(iii) the hitching device on a pony trailer,

to the trailer turn centre;

“triaxle” means an axle group of 3 or more consecutive axles, 1 of which is a lowered lift axle, that has the same number and size of tires on each axle;

“tridem axle” means an axle group of 3 consecutive, equally spaced axles within a vehicle that does not include any liftable or self-steering axles, and that has the same number and size of tires on each axle;

“tridem equivalent axle” means an axle group that is made up of 3 consecutive, equally spaced axles within a vehicle and that has

(i) all lift axles lowered,

(ii) the same number and size of tires on each axle, and

(iii) each of its axles attached to the vehicle by identical pneumatic suspensions that automatically provide load equalization;

Definition of “tridem equivalent axle” replaced: O.I.C. 2006-547, N.S. Reg. 228/2006.

“truck” means a motor vehicle, other than a bus,

(i) that is designed and normally used to carry cargo, and

(ii) that may operate as a single unit or may pull a trailer other than a semi-trailer;

“truck full trailer” means a combination of vehicles composed of a truck and a full trailer;

“truck pony trailer” means a combination of vehicles composed of a truck and a pony trailer;

“turn centre” means the geometric centre of the axle group on a semi-trailer or pony trailer or the geometric centre of the rear axle group on a truck, tractor or full trailer;

“turntable” means a device at the front of a full trailer that permits articulation of the front axle or axle group on the full trailer;

“vehicle identification number” means a number consisting of arabic numerals, letters of the English alphabet, or both that the manufacturer assigns to a vehicle for identification purposes;

“warning flag” means a square flag of red or orange colour with sides that are at least 400 mm in length; and

“width of tire” means the width of a tire as customarily measured and rated by manufacturers of motor vehicles and tires, and stamped on the tire at the time of manufacture.

Section 2, clause letters removed: O.I.C. 2015-362, N.S. Reg. 364/2015.

Allowable vehicle configurations

3 (1) Unless a special permit has been issued pursuant to Section 11, no person shall operate or cause to be operated upon a highway, a truck, a tractor, a semi-trailer, a full trailer, a pony trailer or any combination of these vehicles, or an intercity bus, either unladen or with load, that is not represented in Schedule A.

(2) Despite subsection (1), a person may operate or cause to be operated upon a highway a B-train double with a tridem axle group on the second semi-trailer.

(3) Despite subsection (1), a person may operate or cause to be operated upon a highway a truck, a tractor, a semi-trailer, a full trailer, a pony trailer or any combination of these vehicles represented in Schedule A, either unladen or with load, with an additional axle provided

(a) the additional axle is a lift axle;

(b) the lift axle is not in the lowered position; and

(4) Unless a special permit has been issued pursuant to Section 11, no person shall operate or cause to be operated upon a highway

(a) an A-train double;

(b) a B-train double;

(d) a 3 axle pony trailer; or

(e) a 16.2 m semi-trailer,

that is equipped with a lift axle other than in a tandem equivalent axle group or in a tridem equivalent axle group.

(5) Despite subsection (4), a person may operate or cause to be operated upon a highway

(a) a vehicle described in subsection (4), with an axle group weight and a gross vehicle weight that does not take into consideration the lift axle, but conforms to all other requirements as outlined in these regulations;

(b) a 3 axle pony trailer, model year 2002 and earlier, that is equipped with a lift axle other than in a tridem equivalent axle group, as long as it

Clause 3(5)(b) amended: O.I.C. 2010-5, N.S. Reg. 4/2010.

(i) conforms to the dimensional limits, axle spreads and interaxle spacings specified in the 1997 regulations,

(ii) was registered in the Province prior to coming into force of these regulations, and

(iii) has an axle group weight and a gross vehicle weight that take into consideration the lift axle; or

(c) a 16.2 m semi-trailer, model year 2002 and earlier, that is equipped with a lift axle other than in a tandem equivalent axle group or in a tridem equivalent axle group, as long as it

Clause 3(5)(c) amended: O.I.C. 2010-5, N.S. Reg. 4/2010.

(i) conforms to all other requirements set out in these regulations;

(ii) was registered in the Province prior to coming into force of these regulations, and

(iii) has an axle group weight and a gross vehicle weight that take into consideration the lift axle.

Subclause 3(5)(c)(iii) amended: O.I.C. 2002-504, N.S. Reg. 140/2002.

Dimensions

4 (1) Unless a special permit has been issued pursuant to Section 11, or otherwise specified in this Section, no person shall operate or cause to be operated upon a highway a vehicle or combination of vehicles that has, including any load thereon,

(a) an overall width greater than 2.6 m;

(b) an outside rear-vision mirror extending more than 300 mm on each side of the

vehicle or combination of vehicles;

(c) auxiliary equipment or devices that are not designed or used to carry cargo extending more than 100 mm on each side of the vehicle or combination of vehicles;

(d) an overall height greater than 4.15 m;

(e) an overall length greater than 12.5 m;

(f) a front overhang greater than 1.0 m;

(g) a rear overhang greater than 1.0 m, unless red warning flags are affixed to the end of the cargo; and

(h) a rear overhang greater than 2.0 m.

(2) Unless a special permit has been issued pursuant to Section 11, or otherwise specified in this Section, no person shall operate or cause to be operated upon a highway a vehicle or combination of vehicles set out in Schedule A having axle spreads or interaxle spacings other than those set out in Schedule A, and, including any load thereon, having dimensions that exceed the maximum dimension limits or are less than the minimum dimension limits set out in Schedule A.

Interaxle spacing requirements

(3) Subject to subsection 7(2), a person may operate or cause to be operated upon a highway a vehicle or combination of vehicles set out in Schedule A, except a truck with a single steering axle and a tractor, that does not meet the minimum interaxle spacing requirements set out in Schedule A, if the vehicle or combination of vehicles conforms to all other dimensional limits set out in Schedule A.

Subsection 4(3) amended: O.I.C. 2010-5, N.S. Reg. 4/2010.

Passenger vehicles

(4) For a passenger vehicle, no load shall extend beyond the line of the fenders on the left side of the vehicle or extend more than 150 mm beyond the line of the fender on the right side thereof.

Farm vehicles

(5) An implement of husbandry temporarily propelled or moved upon a highway is exempt from the dimensional limits set out in this Section.

Subsection 4(5) amended: O.I.C. 2006-547, N.S. Reg. 228/2006.

(6) Despite subsection (5), no person shall propel or move upon a highway an implement of husbandry exceeding 2.6 m in overall width, unless it is equipped with

(a) a slow-moving vehicle sign, as prescribed by the regulations respecting slow-moving vehicle identification made under the Act,

(b) fluorescent flags or flashing lights mounted at the extremities of the implement of husbandry and visible for a distance of 300 m; and

Subsection 4(6) replaced: O.I.C. 2010-5, N.S. Reg. 4/2010.

(6A) Despite clause (6)(c), if an implement of husbandry exceeding 2.6 m in width does not have motive power, the motor vehicle moving the implement of husbandry, not the implement of husbandry, must be equipped with an amber revolving or strobe warning light visible in all directions for a distance of 300 m.

Subsection 4(6A) added: O.I.C. 2010-5, N.S. Reg. 4/2010.

(6B) In addition to the requirements in subsections (6) and (6A), if any portion of an implement of husbandry extends over the centre line of the highway and the implement of husbandry exceeds 4.27 m in overall width, it must not be propelled or moved on a highway unless it is preceded by a pilot vehicle equipped with

(a) a D-sign, as prescribed by the Department of Transportation and Infrastructure Renewal, mounted in the front, and

(b) an amber revolving or strobe warning light mounted on top and visible in all directions for a distance of 300 m.

Subsection 4(6B) added: O.I.C. 2010-5, N.S. Reg. 4/2010.

Snow clearing equipment

(7) A person may operate or cause to be operated on a highway snow clearing equipment that has an overall width greater than 2.6 m, an overall height greater than 4.15 m and an overall length greater than 12.5 m.

Road building machinery

(8) Road building machinery operating within a construction area is exempt from the dimensional limits set out in this Section.

Subsections 4(9)-(13) repealed: O.I.C. 2010-5, N.S. Reg. 4/2010.

Weight limits

5 (1) Unless a special permit has been issued pursuant to Section 11, or otherwise specified in this Section or Section 7, no person shall operate or cause to be operated upon a highway a vehicle or combination of vehicles, either unladen or with load, and equipped with pneumatic tires, having

Subsection 5(1) amended: O.I.C. 2002-504, N.S. Reg. 140/2002.

(a) a weight in excess of the weight represented upon the permit issued in respect of a vehicle or combination of vehicles by the jurisdiction;

(b) an axle weight in excess of the manufacturer’s gross axle weight rating;

(i) the sum of the tire load ratings of all tires installed on the wheels of any axle,

(ii) the sum of 10 kg per mm of tire width of all tires installed on the wheel of an axle for tires in excess of 150 mm in width, and

(iii) the following weights, as applicable:

(A) 9100 kg, in the case of an axle equipped with 4 tires,

(B) 9100 kg, in the case of an axle equipped with 2 tires that is a steering axle,

(D) 7700 kg, in the case of an axle equipped with 2 tires, other than a steering axle, that has tire widths of 445 mm or greater and is installed on a vehicle that is operated on a Maximum Weight Road listed in Schedule “C” to the Road List Regulations made under the Act;

Paragraph 5(1)(c)(iii)(D) amended: O.I.C. 2011-255, N.S. Reg. 232/2011.

Clause 5(1)(c) replaced: O.I.C. 2007-406, N.S. Reg. 347/2007.

(d) a weight in excess of the maximum axle weight limits specified in Schedule A for an axle group;

(e) a static weight on any axle of an axle group that is 1000 kg greater or less than the weight of an adjacent axle in the same axle group;

Clause 5(e) amended: O.I.C. 2015-362, N.S. Reg. 364/2015.

(f) a weight in excess of 4500 kg on any axle of an assembly of 2 or more consecutive axles that is not an axle group;

(g) a gross vehicle weight in excess of the manufacturer’s gross vehicle weight rating; or

Clause 5(1)(g) amended: O.I.C. 2002-504, N.S. Reg. 140/2002.

(h) a gross vehicle weight in excess of the maximum gross vehicle weight limits specified in Schedule A for a specified vehicle configuration and for a specified class of highways.

(2) No person shall move or cause to be moved over or upon a highway a vehicle or object on wheels, rollers or otherwise, other than a motor vehicle, having a weight in excess of 9100 kg.

(3) No person shall operate or cause to be operated upon a highway a vehicle, either unladen or with load, and equipped with solid rubber tires, having a weight in excess of the weight in kilograms represented upon the permit issued in respect of the vehicle or having an axle weight in excess of 75% of the vehicle weight that would otherwise apply to the vehicle.

(4) No person shall operate or cause to be operated upon any highway a vehicle, either unladen or with load, having a wheel weight in excess of 55% of the weight prescribed for any axle upon which the wheel is mounted.

Registered weights

6 (1) Except as otherwise permitted in these regulations, the axle weights to be used by the Registry of Motor Vehicles for calculating the maximum registered weight and issuing a permit for a vehicle or combination of vehicles set out in Schedule A are the axle weight limits set out in Schedule A.

Subsection 6(1) amended: O.I.C. 2002-504, N.S. Reg. 140/2002.

(2) The maximum gross vehicle weight set out in Schedule A shall be the maximum weight for which a vehicle or combination of vehicles described therein may be registered.

(3) The Registry of Motor Vehicles shall calculate the maximum registered weight of a truck or an intercity bus using a steering axle weight of 5500 kg unless the owner of the truck or the intercity bus has provided the Registry of Motor Vehicles with a certificate respecting the gross axle weight rating of the steering axle and such other information as may be required by the Registry of Motor Vehicles to determine a safe registered weight.

(4) The Registry of Motor Vehicles shall calculate the maximum registered weight of a tractor using a steering axle weight of 5500 kg.

Original subsection 6(4) renumbered as subsection (6), subsection 6(4) added: O.I.C. 2002-504, N.S. Reg. 140/2002.

Subsection 6(5) repealed: O.I.C. 2010-5, N.S. Reg. 4/2010.

(6) Despite any other provision of these regulations, if a vehicle registered under the laws of another province or state may be legally operated within the Province without being registered in the Province, no person shall operate the vehicle within the Province with a weight in excess of the maximum axle and gross vehicle weights set out in Schedule A for a similar vehicle registered within the Province.

Original subsection 6(4) renumbered (6): O.I.C. 2002-504, N.S. Reg. 140/2002.

Other weight limits

7 (1) A person may operate or cause to be operated upon a highway a vehicle or combination of vehicles set out in Schedule A with a maximum single steering axle weight of 9100 kg, but with no increase in the maximum gross vehicle weight provided evidence is available to ensure the load carrying capacity of the steering axle and all other components is not exceeded.

(2) The maximum gross vehicle weight of a vehicle or combination of vehicles set out in Schedule A that does not conform to minimum interaxle spacings requirements shall be reduced by 1000 kg for each 0.5 m, or part thereof, shortfall in the minimum required interaxle spacing.

(2A) Subsection (2) does not apply to a pony trailer, model year 2002 and earlier, if the weight of the axle group of the pony trailer does not exceed the maximum weight limits set out in Schedule A-2.

Subsection 7(2A) added: O.I.C. 2010-5, N.S. Reg. 4/2010; replaced: O.I.C. 2011-255, N.S. Reg. 232/2011.

(2B) Subsection (2) does not apply to a semi-trailer, model year 2002 and earlier, if

(a) the weight of the axle group of the semi-trailer does not exceed the maximum weight limits set out in Schedule A-3; or

Clause 7(2B)(a) replaced: O.I.C. 2011-255, N.S. Reg. 232/2011.

(b) the semi-trailer meets the wheelbase requirement as set out in Schedule A.

Subsection 7(2B) added: O.I.C. 2010-5, N.S. Reg. 4/2010.

(3) The determination of an axle group weight and a gross vehicle weight shall not take into consideration a lift axle, other than as part of a tandem equivalent axle group or a tridem equivalent axle group, unless permitted by these regulations.

Subsection 7(3) replaced: O.I.C. 2010-5, N.S. Reg. 4/2010.

(4) Despite clauses 5(1)(d) and (h), a person may operate or cause to be operated on a highway, for or on behalf of the Department of Transportation and Infrastructure Renewal or a municipality, a snow clearing or ice control vehicle that exceeds the maximum axle weight limits and the maximum gross vehicle weight limits as specified in Schedule A, if the axle and gross vehicle weights do not exceed

(a) the manufacturer’s axle weight ratings,

(b) the manufacturer’s tire load ratings, and

Subsection 7(4) added: O.I.C. 2010-5, N.S. Reg. 4/2010.

Tolerance

8 (1) No tolerances shall be allowed for the weights determined in accordance with Sections 5, 6 and 7.

Subsection 8(1) amended: O.I.C. 2010-5, N.S. Reg. 4/2010.

(2) If the axle weight exceeds the axle weight limit determined in accordance with Sections 5, 6 and 7, the charge and penalty shall be based on the weight that is in excess of the axle weight limit.

(3) If the vehicle weight exceeds the weight represented on the permit issued in respect of the vehicle or combination of vehicles, the charge and penalty shall be based on the weight that is in excess of the weight represented on the permit issued by the jurisdiction having authority to do so.

Subsection 8(4) repealed: O.I.C. 2010-5, N.S. Reg. 4/2010.

Class of highway weights

9 (1) The classes of highways upon which a vehicle or combination of vehicles may be operated at the specified maximum gross vehicle weights set out in Schedule A are

(a) maximum weight roads, as listed in Schedule C to the Road List Regulations made under the Act;

Clause 9(1)(a) amended: O.I.C. 2011-255, N.S. Reg. 232/2011.

(b) intermediate weight roads, as listed in Schedule D to the Road List Regulations made under the Act; and

Clause 9(1)(b) amended: O.I.C. 2009-52, N.S. Reg. 32/2009; O.I.C. 2011-255, N.S. Reg. 232/2011.

(ba) B-train routes, listed in Schedule B to the Road List Regulations made under the Act;

Clause 9(1)(ba) added: O.I.C. 2010-5, N.S. Reg. 4/2010; amended: O.I.C. 2011-255, N.S. Reg. 232/2011.

(2) Despite this Section, the Department may determine and fix a lesser maximum load that may be carried over any bridge or section of highway and may erect and maintain signs giving notice of the lesser maximum load.

(3) Where signs have been erected and maintained pursuant to subsection (2), no person shall drive or move or cause to be driven or moved over the bridge or section of the highway any vehicle or combination of vehicles having a weight, unladen or with load, in excess of the maximum load stated on the sign.

Vehicle permits

10 (1) If a permit has been issued in respect of 1 vehicle of a combination of vehicles but not in respect of the other vehicle of the combination of vehicles that is required to be registered under the Act, no person shall operate or cause to be operated the combination of vehicles upon a highway when the combination of vehicles has a weight, either unladen or with load, in excess of the weight represented on the permit issued in respect of the vehicle of the combination for which a permit has been issued, except as provided in Section 3 of the regulations respecting special permits and fees respecting self-propelled machinery, equipment or tractor used for agricultural purposes (Order in Council 72-533, N.S. Reg. 35/72) made under the Act.

(2) No person shall operate or cause to be operated upon a highway a vehicle or combination of vehicles that is required to be registered under the Act, in respect of which no permit has been issued, having a weight, either unladen or with load, in excess of 1500 kg.

Special permits

11 (1) The Registry of Motor Vehicles may issue a special permit authorizing any person to operate or move a vehicle, combination of vehicles, object or structure

(a) of any dimension, or with its load placed in any manner; or

(b) that exceeds the maximum weight specified in these regulations or does not meet the specifications of Schedule A for maximum axle weight or maximum gross vehicle weight; or

(2) A special permit issued in respect of a vehicle or combination of vehicles may specify the maximum axle weights of any or all axles or of a combination of axles of the vehicle or combination of vehicles either in addition to or in lieu of specifying the total maximum gross vehicle weight of the vehicle or combination of vehicles.

(3) Application for a special permit may be made by telephone, telegram, facsimile or electronic mail, or in writing, and shall state the dimensions, estimated maximum axles weight and maximum gross vehicle weight, the highways or parts of highways over which the vehicle, object or structure is to be operated or moved and any other information the Registry of Motor Vehicles may require.

(4) A special permit may be in respect of one operation or movement of the vehicle, combination of vehicles, object or structure, or may be for operations or movements for any limited period of time or during any season of the year.

(5) A special permit shall be carried in the vehicle, combination of vehicles, object or structure to which it refers and shall be produced at the request of any peace officer.

(6) Despite the issuance of a special permit, a person who operates or causes to operate a vehicle, combination of vehicles, object or structure on or over a highway shall be liable for any damage thereby caused to that highway.

(7) A permit issued pursuant to this Section may be issued subject to conditions determined by the Department of Transportation and Public Works.

(8) The Minister of Service Nova Scotia and Municipal Relations may revoke any special permit where, in the opinion of the Minister a condition under which the permit was issued has not been complied with, or where the vehicle referred to in the permit has not been operated in compliance with the Act or regulations.

[Note: Effective June 3, 2019, the reference to the Minister of Service Nova Scotia and Municipal Relations should be read as a reference to the Minister of Service Nova Scotia and Internal Services in accordance with Order in Council 2019-149 under the Public Service Act, R.S.N.S. 1989, c. 376.]

(9) No person shall operate or cause to be operated upon a highway a vehicle or combination of vehicles for which a special permit has been issued under this Section that does not conform to the dimensions, weights, terms or conditions prescribed in the special permit.

(10) Despite subsections (1) to (9), if a vehicle or combination of vehicles is not registered for the maximum weight permitted by these regulations, the Registry of Motor Vehicles shall not issue a special permit under this Section.

Operation of vehicle in designated highway construction area

12 These regulations do not apply to the operation of a vehicle upon a highway or a portion of a highway that has been designated by the Minister of Transportation and Public Works for purposes incidental to the construction of a highway

(a) if the maximum weight allowed for the vehicle pursuant to the Act and the regulations is shown on the permit; and

(b) if the vehicle is carrying gravel, sand, stone, asphalt, cement, paving material or other material used in highway construction.

Truck prohibition

13 (1) No person shall operate or cause to be operated a truck, with or without a trailer, or a truck tractor, with or without a trailer, with a registered gross vehicle weight greater than 3000 kg on Trunk 4 from Exit 7 of Highway 104 at Thomson Station through to Exit 11 of Highway 104 at Glenholme, or the reverse, except when making a local delivery.

(2) Any person who violates subsection 13(1) is guilty of an offence and liable on summary conviction to the penalties provided for a category F offence in the Summary Proceedings Act.

Subsection 13(2) replaced: O.I.C. 2010-5, N.S. Reg. 4/2010.

Section 13 replaced: O.I.C. 2006-547, N.S. Reg. 228/2006.

Penalties

14 (1) Any person who operates or causes to be operated any of the following combinations of vehicles with any load thereon on the specified highways is guilty of an offence and liable on summary conviction to the penalties provided for a category F offence in the Summary Proceedings Act:

Subsection 14(1) amended: O.I.C. 2010-5, N.S. Reg. 4/2010; O.I.C. 2013-164, N.S. Reg. 208/2013.

(a) an A-train double on any highway other than a maximum weight road;

(b) a B-train double on any highway other than a B-train route or a maximum weight road;

(2) Any person who violates any of the provisions of these regulations for which no other penalty is provided is guilty of an offence and liable on summary conviction to the penalties provided for a category B offence in the Summary Proceedings Act.

Subsection 14(2) amended: O.I.C. 2010-5, N.S. Reg. 4/2010.

Section 14 added: O.I.C. 2006-547, N.S. Reg. 228/2006.

Note: Effective October 23, 2007, references to the Minister of Transportation and Public Works throughout these regulations should be read as references to the Minister of Transportation and Infrastructure Renewal in accordance with Order in Council 2007-553, under the Public Service Act, R.S.N.S. 1989, c. 376.

________________________________________________________________

Schedule A: Vehicle Weights and Dimensions Limits

Part 1 - Vehicle Weights and Dimensions Limits

Part 2 - Vehicle Weights and Dimensions Limits by Configuration

Note:The footnotes in this Schedule apply to the corresponding footnote numbers in the Section that immediately precedes the footnotes.

Note amended: O.I.C. 2002-504, N.S. Reg. 140/2002.

Part 1—Vehicle Weight and Dimension Limits

1 An outside rear-vision mirror may extend up to 300 mm on each side of a vehicle or combination of vehicles.

2 Auxiliary equipment or devices not designed or used to carry cargo may extend up to 100 mm on each side of a vehicle or combination of vehicles.

3 A tractor semi-trailer while being used to transport poles, pipe or material that cannot be dismembered shall have a maximum overall length limit of 25 m.

4 A tractor semi-trailer designed and being used as an auto carrier must not have an overall height exceeding 4.15 m when not loaded, and 4.30 m when loaded. The driver must ensure there is a safe clearance under any physical overpass, including structures and utility lines.

5 The load of a tractor semi-trailer designed and being used as an auto carrier that overhangs the front or rear of the tractor semi-trailer must not have an overall width that exceeds 2.1 m.

6 A tractor semi-trailer designed and being used as an auto carrier must not have an overall length exceeding 23 m when not loaded and 25 m when loaded.

B. Dimensional Controls - Wheelbases, Interaxle Spacings, Overhangs, Setback and Track Width

1 Cargo may overhang the rear, if the overall length and effective rear overhang limits are respected. Red warning flags are required on the rear of the cargo when the rear overhang exceeds 1.0 m.

2 Cargo may overhang the front, if the overall length limit for the vehicle or vehicle combination is not exceeded, and in the case of a semi-trailer, the cargo does not extend beyond a 2.0 m radius about the kingpin.

3 A vehicle or combination of vehicles that does not comply with the minimum interaxle spacing requirements, but that complies with all other dimensional limits, will be subject to a reduction in the maximum gross vehicle weight limit of 1000 kg for each 0.5 m shortfall, or part thereof, in required interaxle spacing.

4 The minimum interaxle spacing requirement must always be met by a truck and a tractor.

5 For a semi-trailer, a full trailer and a pony trailer retrofitted with single tires equal to or greater than 445 mm in width, the minimum track width is 2.3 m.

6 A tractor wheelbase can be up to a maximum of 7.2 m, if the wheelbase of the semi-trailer is not greater than the wheelbase as set out in Schedule A-1.

7 A tractor semi-trailer designed and being used as an auto carrier must not have a rear overhang that exceeds 35% of the wheelbase when not loaded and 42% of the wheelbase when loaded.

8 A tractor semi-trailer designed and being used as an auto carrier must not have a rear overhang that exceeds 1.2 m.

1 Steering axle loads can be as a high as 9100 kg for a vehicle or combination of vehicles if the load carrying capacity of the axles, tires, and all other components is not exceeded, and the tire loading does not exceed 10 kg/mm of tire width; however, no increase in the specified maximum gross vehicle weight limit for the configuration will be permitted with higher steering axle loads.

2 Both axles in a tandem steering axle must be actively controlled by the driver; passive or self-steering axles are not permitted.

4 This weight limit is increased to 21 000 kg for a semi-trailer model year 2002 and earlier.

5 This weight limit is increased to 24 000 kg for a semi-trailer model year 2002 and earlier.

6 This weight limit is increased to 26 000 kg for a semi-trailer model year 2002 and earlier.

11 This weight limit is increased to 18 000 kg for a semi-trailer model year 2002 and earlier.

12 This weight limit is increased to 20 000 kg for a semi-trailer model year 2002 and earlier.

13 This weight limit is increased to 22 000 kg for a semi-trailer model year 2002 and earlier.

14 This weight limit is increased to 23 100 kg for a semi-trailer model year 2002 and earlier.

15 This weight limit is increased to 23 324 kg for a semi-trailer model year 2002 and earlier.

16 This weight limit is increased to 23 700 kg for a semi-trailer model year 2002 and earlier.

17 This weight limit is increased to 25 034 kg for a semi-trailer model year 2002 and earlier.

Schedule A, Part 1, Section C replaced: O.I.C. 2007-406, N.S. Reg. 347/2007; amended: O.I.C. 2009-52, N.S. Reg. 32/2009; O.I.C. 2010-5, N.S. Reg. 4/2010; O.I.C. 2013-164, N.S. Reg. 208/2013.

There shall be no automatically applied tolerances associated with axle or vehicle weight limits.

Schedule A, Part 1, Section E amended: O.I.C. 2006-547, N.S. Reg. 228/2006; O.I.C. 2010-5, N.S. Reg. 4/2010.

1 A tractor semi-trailer while being used to transport poles, pipe or material that cannot be dismembered must not exceed a length of 25 m.

2 A tractor semi-trailer designed and being used as an auto carrier must not exceed a length of 23 m when not loaded and 25 m when loaded.

3 The load of a tractor semi-trailer designed and being used as an auto carrier that overhangs the front or rear of the tractor semi-trailer must not have an overall width that exceeds 2.1 m.

4 A tractor semi-trailer designed and being used as an auto carrier must not have an overall height that exceeds 4.15 m when not loaded and 4.30 m when loaded. The driver must ensure there is a safe clearance under any physical overpass, including structures and utility lines.

5 A tractor wheelbase can be up to a maximum of 7.2 m, if the wheelbase of the semi-trailer is not greater than the wheelbase as set out in Schedule A-1.

6 The minimum wheelbase for a semi-trailer, model year 2002 or earlier, is 3.75 m.

7 A tractor semi-trailer designed and being used as an auto carrier must not have a rear overhang that exceeds 35% of the wheelbase when not loaded and 42% of the wheelbase when loaded.

Schedule A, Part 2, Category 1, Section 1 replaced: O.I.C. 2010-5, N.S. Reg. 4/2010.

1 The maximum steering axle weight can be as high as 9100 kg for a vehicle or combination of vehicles if the load-carrying capacity of the axle, tires, and all other components is not exceeded, and the tire loading does not exceed 10 kg/mm of width; however, the maximum gross vehicle weight limit will be based on a steering axle weight of 5500 kg.

2 This weight limit is 21 000 kg for a semi-trailer model year 2002 and earlier.

3 This weight limit is 24 000 kg for a semi-trailer model year 2002 and earlier.

4 This weight limit is 26 000 kg for a semi-trailer model year 2002 and earlier.

5 This weight limit is 44 500 kg for a semi-trailer model year 2002 and earlier.

6 This weight limit is 47 500 kg for a semi-trailer model year 2002 and earlier.

11 This weight limit is 40 600 kg and the maximum tridem axle weight is 26 000 kg for a semi-trailer model year 2002 and earlier.

12 This weight limit is 35 600 kg and the maximum triaxle weight is 21 000 kg for a semi-trailer model year 2002 and earlier.

13 This weight limit is 38 600 kg and the maximum triaxle weight is 24 000 kg for a semi-trailer model year 2002 and earlier.

14 This weight limit is 40 600 kg and the maximum triaxle weight is 26 000 kg for a semi-trailer model year 2002 and earlier.

15 This weight limit is 38 600 kg and the maximum tridem axle weight is 24 000 kg for a semi-trailer model year 2002 and earlier.

16 This weight limit is 49 500 kg and the maximum triaxle weight is 26 000 kg for a semi-trailer model 2002 and earlier.

18 The maximum axle weight on Maximum Weight Roads, Intermediate Weight Roads and B-train Routes for a semi-trailer, model year 2002 and earlier, with a wheelbase less than 6.25 m but at least 3.75 m, shall be reduced by the weight as set out in Schedule A-3.

Schedule A, Part 2, Category 1, Section 2 replaced: O.I.C. 2010-5, N.S. Reg. 4/2010; amended: O.I.C. 2013-164, N.S. Reg. 208/2013.

Schedule A, Part 2, Category 1A, Section 1 added: O.I.C. 2015-362, N.S. Reg. 364/2015.

Schedule A, Part 2, Category 1A, Section 2 added: O.I.C. 2015-362, N.S. Reg. 364/2015.

1 The maximum steering axle weight can be as high as 9100 kg for a vehicle or combination of vehicles if the load carrying capacity of the axle, tires, and all other components is not exceeded, and the tire loading does not exceed 10 kg/mm of width; however, the maximum gross vehicle weight limit will be based on a steering axle weight of 5500 kg.

Schedule A, Part 2, Category 2, Section 2 amended: O.I.C. 2007-406, N.S. Reg. 347/2007; O.I.C. 2009-52, N.S. Reg. 32/2009; O.I.C. 2010-5, N.S. Reg. 4/2010; O.I.C. 2013-164, N.S. Reg. 208/2013.

Schedule A, Part 2, Category 3, Section 1 table replaced: O.I.C. 2015-362, N.S. Reg. 364/2015.

Schedule A, Part 2, Category 3, Section 1 replaced: O.I.C. 2005-583, N.S. Reg. 234/2005.

Category 3: B Train Double

Section 2 - Weight Limits

The maximum axle weight limits and maximum gross vehicle weight limits set out in this Section are for axles equipped with dual tires, except for steering axles. The maximum gross vehicle weight limit for a vehicle or combination of vehicles composed of axles equipped with single tires or a combination of single tires and dual tires is the sum of the maximum axle weight limits in Section C–Axle Weight Limits of Part 1–Vehicle Weight and Dimension Limits for the particular axles equipped with single tires or a combination of single tires and dual tires for a specified class of highway. The maximum gross vehicle weight limit of a vehicle or combination of vehicles equipped with single tires or a combination of single and dual tires must not exceed the maximum gross vehicle weight limit of a similar vehicle or combination of vehicles equipped, except for the steering axle, with dual tires for a specified class of highway.

WEIGHT	LIMIT
Axle Weight Limits:
Steering Axle	Maximum 5500 kg¹
Single Axle (dual tires)	Maximum 9100 kg
Tandem Axle (including tandem equivalent axle)
Axle spread 1.2 m to 1.85 m	Maximum 18 000 kg
Tridem Axle
Axle spread 2.4 m to less than 3.0 m	Maximum 21 000 kg
Axle spread 3.0 m to 3.1 m	Maximum 24 000 kg
Gross Vehicle Weight Limits:
Maximum Weight Roads
Four axles	Maximum 32 800 kg
Five axles	Maximum 41 700 kg
Six axles	Maximum 50 600 kg
Seven axles	Maximum 59 500 kg
Eight axles	Maximum 62 500 kg
Intermediate Weight Roads	Not allowed² with any load thereon
All Other Highways	Not allowed with any load thereon

2 For roads listed in Schedule B to the Road List Regulations made under the Act, the maximum weight is 32 800 kg for 4 axles, 41 700 kg for 5 axles, 50 600 for 6 axles, 59 500 kg for 7 axles, and 62 500 kg for 8 axles.

Schedule A, Part 2, Category 3, Section 2 amended: O.I.C. 2007-406, N.S. Reg. 347/2007; O.I.C. 2009-52, N.S. Reg. 32/2009; O.I.C. 2010-5, N.S. Reg. 4/2010; O.I.C. 2011-255, N.S. Reg. 232/2011; O.I.C. 2013-164, N.S. Reg. 208/2013.

Category 4: C Train Double

Section 1 - Dimension Limits

DIMENSION	LIMIT
Overall Length	Maximum 25 m
Overall Width	Maximum 2.6 m
Overall Height	Maximum 4.15 m
Box Length	Maximum 20.0 m
Tractor
Wheelbase	Maximum 6.2 m
Tandem Axle Spread	Minimum 1.2 m/Maximum 1.85 m
Lead Semi-trailer
Wheelbase	Minimum 6.25 m
Kingpin setback	Maximum 2.0 m radius
Tandem axle spread	Minimum 1.2 m/Maximum 1.85 m
Hitch offset	Maximum 1.8 m
Track width	Minimum 2.5 m/Maximum 2.6 m
Second Semi-trailer or Full Trailer
Wheelbase	Minimum 6.25 m
Tandem axle spread	Minimum 1.2 m/Maximum 1.85 m
Track width	Minimum 2.5 m/Maximum 2.6 m
C Dolly Drawbar Length	Maximum 2.0 m
Interaxle Spacings
Single Axle to Single or Tandem Axle	Minimum 3.0 m
Tandem Axle to Tandem Axle	Minimum 5.0 m
Dimension “A” (from the centre of last axle on the lead semi-trailer to centre of the first axle on the converter dolly or second trailer)	Not Controlled

Category 4: C Train Double

Section 2 - Weight Limits

WEIGHT	LIMIT
Axle Weight Limits:
Steering Axle	Maximum 5500 kg¹
Single Axle (dual tires)	Maximum 9100 kg
Tandem Axle (including tandem equivalent axle)
Axle spread 1.2 m to 1.85 m	Maximum 18 000 kg
Weight Limitation 1: Sum of axle weights of lead semi-trailer plus weight of converter dolly axle	If Dimension “A” is less than 3 metres, the weight of the axle(s) on the lead semi-trailer plus the weight of the converter dolly axle(s) is limited to a maximum of 18 000 kg for a 2 axle group or a maximum of 24 000 kg for a 3 axle group.
Weight Limitation 2: Sum of axle weights of full trailer or second semi-trailer	The weight of the second trailer must not exceed the weight of the tractor drive axle(s) plus the weight of the axle(s) on the first semi-trailer.
Gross Vehicle Weight Limits:
Maximum Weight Roads
Five axles	Maximum 41 900 kg
Six axles	Maximum 50 800 kg
Seven axles	Maximum 55 600 kg
Eight axles	Maximum 58 500 kg
Intermediate Weight Roads	Not allowed with any load thereon
All Other Highways	Not allowed with any load thereon

Schedule A, Part 2, Category 4, Section 2 amended: O.I.C. 2007-406, N.S. Reg. 347/2007; O.I.C. 2009-52, N.S. Reg. 32/2009; O.I.C. 2010-5, N.S. Reg. 4/2010; O.I.C. 2013-164, N.S. Reg. 208/2013.

Category 5: Straight Truck

Section 1 - Dimension Limits

DIMENSION	LIMIT
Overall Length	Maximum 12.5 m
Overall Width	Maximum 2.6 m
Overall Height	Maximum 4.15 m
Box Length	Not Controlled
Wheelbase	Not Controlled
Tandem Axle Spread	Minimum 1.2 m/Maximum 1.85 m¹
Effective Rear Overhang	Maximum 4.0 m
Interaxle Spacings
Single Axle to Single or Tandem Axle	Minimum 3.0 m
Tandem Steering Axle to Tandem Axle	Minimum 3.65 m

1 Maximum tandem steering axle spread is 2.2 m.

Schedule A, Part 2, Category 5, Section 1 amended: O.I.C. 2010-5, N.S. Reg. 4/2010.

Category 5: Straight Truck

Section 2 - Weight Limits

WEIGHT	LIMIT
Axle Weight Limits:
Steering Axle - single axle, single tires	Maximum 8000 kg¹
- tandem axle, single tires	Maximum 16 000 kg
Single Axle (dual tires)	Maximum 9100 kg
Tandem Axle (including tandem equivalent axle)
Axle spread 1.2 m to 1.85 m	Maximum 18 000 kg
Gross Vehicle Weight Limits:
Maximum Weight Roads
Two axles	Maximum 17 100 kg
Three axles	Maximum 26 000 kg
Four axles	Maximum 34 000 kg²
Intermediate Weight Roads
Two axles	Maximum 17 100 kg
Three axles	Maximum 26 000 kg
Four axles	Maximum 34 000 kg²
All Other Highways
Two axles	Maximum 17 100 kg
Three axles	Maximum 26 000 kg
Four axles	Maximum 34 000 kg²

2 This weight limit is decreased in accordance with subsection 7(2) for a tandem steering axle truck that does not meet the interaxle spacing limit of 3.65 m.

Schedule A, Part 2, Category 5, Section 2 amended: O.I.C. 2007-406, N.S. Reg. 347/2007; O.I.C. 2009-52, N.S. Reg. 32/2009; O.I.C. 2010-5, N.S. Reg. 4/2010.

Category 6: Truck - Pony Trailer Combination

Section 1 - Dimension Limits

DIMENSION	LIMIT
Overall Length	Maximum 23 m
Overall Width	Maximum 2.6 m
Overall Height	Maximum 4.15 m
Box Length	Maximum 20 m
Truck
Length	Maximum 12.5 m
Wheelbase	Not Controlled
Tandem axle spread	Minimum 1.2 m/Maximum 1.85 m
Effective rear overhang	Maximum 4.0 m
Hitch offset¹	Maximum 1.8 m
Pony Trailer¹
Length	Maximum 12.5 m
Wheelbase	Minimum 6.25 m
Tandem axle spread	Minimum 1.2 m/Maximum 1.85 m
Tridem axle spread	Minimum 2.4 m/Maximum 3.7 m
Track width	Minimum 2.5 m/Maximum 2.6 m
Effective rear overhang	Maximum 4.0 m
Interaxle Spacings
Single Axle to Single, Tandem or Tridem Axle	Minimum 3.0 m
Tandem Axle to Tandem Axle	Minimum 5.0 m
Tandem Axle to Tridem Axle	Minimum 5.5 m

1 Dimension limits not applicable to pony trailers with gross vehicle weight rating of less than 10 000 kg.

Schedule A, Part 2, Category 6, Section 1 amended: O.I.C. 2010-5, N.S. Reg. 4/2010; O.I.C. 2011-255, N.S. Reg. 232/2011; O.I.C. 2013-164, N.S. Reg. 208/2013.

Category 6: Truck - Pony Trailer Combination

Section 2 - Weight Limits

WEIGHTS	LIMITS
Axle Weight Limits:
Steering Axle	Maximum 8000 kg¹
Single Axle (dual tires)	Maximum 9100 kg
Tandem Axle (including tandem equivalent axle)
Axle spread 1.2 m to 1.85 m	Maximum 18 000 kg²
Tridem Axle
Axle spread 2.4 m - 3.7 m	Maximum 21 000 kg²
Gross Vehicle Weight Limits:
Maximum Weight Roads
Three axles	Maximum 26 200 kg
Four axles	Maximum 35 100 kg
Five axles	Maximum 44 000 kg
Six axles	Maximum 47 000 kg
Intermediate Weight Roads
Three axles	Maximum 26 200 kg
Four axles	Maximum 35 100 kg
Five axles	Maximum 44 000 kg
Six axles	Maximum 47 000 kg
All Other Highways
Three axles	Maximum 26 200 kg
Four axles	Maximum 35 100 kg
Five axles	Maximum 41 500 kg
Six axles	Maximum 41 500 kg

2 The maximum axle weights of 2-axle and 3-axle pony trailers that are model year 2002 and earlier with a wheelbase less than 6.25 m are as set out in Schedule A-2.

Schedule A, Part 2, Category 6, Section 2 amended: O.I.C. 2007-406, N.S. Reg. 347/2007; O.I.C. 2009-52, N.S. Reg. 32/2009; O.I.C. 2010-5, N.S. Reg. 4/2010; O.I.C. 2011-255, N.S. Reg. 232/2011.

Category 7: Tandem Steering Axle Truck - Pony Trailer Combination

Section 1 - Dimension Limits

DIMENSION	LIMIT
Overall Length	Maximum 23 m
Overall Width	Maximum 2.6 m
Overall Height	Maximum 4.15 m
Box Length	Maximum 20 m
Truck
Length	Maximum 12.5 m
Wheelbase	Not Controlled
Tandem steering axle spread	Minimum 1.2 m/Maximum 2.2 m
Tandem drive axle spread	Minimum 1.2 m/Maximum 1.85 m
Effective rear overhang	Maximum 4.0 m
Hitch offset¹	Maximum 1.8 m
Pony Trailer¹
Length	Maximum 12.5 m
Wheelbase	Minimum 6.25 m
Tandem axle spread	Minimum 1.2 m/Maximum 1.85 m
Tridem axle spread	Minimum 2.4 m/Maximum 3.7 m
Track width	Minimum 2.5 m/Maximum 2.6 m
Effective rear overhang	Maximum 4.0 m
Interaxle Spacings
Tandem Steering Axle to Tandem Drive Axle	Minimum 3.65 m
Single Axle to Single, Tandem or Tridem Axle	Minimum 3.0 m
Tandem Axle to Tandem Axle	Minimum 5.0 m
Tandem Axle to Tridem Axle	Minimum 5.5 m

1 Dimension limits not applicable to pony trailers with gross vehicle weight rating of less than 10 000 kg.

Schedule A, Part 2, Category 7, Section 1 amended: O.I.C. 2010-5, N.S. Reg. 4/2010; erratum in O.I.C. 2010-5 corrected by O.I.C. 2010-117, N.S. Reg. 47/2010; amended: O.I.C. 2011-255, N.S. Reg. 232/2011; O.I.C. 2013-164, N.S. Reg. 208/2013.

Category 7: Tandem Steering Axle Truck - Pony Trailer Combination

Section 2 - Weight Limits

WEIGHTS	LIMITS
Axle Weight Limits:
Truck
Tandem Steering Axle: spread 1.2 m to 2.2 m	Maximum 16 000 kg
Tandem Drive Axle: spread 1.2 m to 1.85 m	Maximum 18 000 kg
Trailer
Single Axle (dual tires)	Maximum 9100 kg
Tandem Axle: spread 1.2 m to 1.85 m	Maximum 18 000 kg¹
Tridem Axle: spread 2.4 m to 3.7 m	Maximum 21 000 kg¹
Gross Vehicle Weight Limits:
Maximum Weight Roads
Five axles	Maximum 43 100 kg⁴
Six axles	Maximum 50 000 kg⁴
Seven axles	Maximum 53 500 kg⁴
Intermediate Weight Roads
Five axles	Maximum 43 100 kg⁴
Six axles	Maximum 49 500 kg⁴
Seven axles	Maximum 49 500 kg⁴
All Other Highways
Five axles	Maximum 41 500 kg⁴
Six axles	Maximum 41 500 kg⁴
Seven axles	Maximum 41 500 kg⁴

1 The maximum axle weights of 2-axle and 3-axle pony trailers that are model 2002 and earlier with a wheelbase less than 6.25 m are as set out in Schedule A-2.

4 This weight limit is decreased in accordance with subsection 7(2) for a combination of vehicles with a tandem steering axle truck that does not meet the interaxle spacing limit of 3.65 m.

Schedule A, Part 2, Category 7, Section 2 amended: O.I.C. 2007-406, N.S. Reg. 347/2007; O.I.C. 2009-52, N.S. Reg. 32/2009; O.I.C. 2010-5, N.S. Reg. 4/2010; O.I.C. 2011-255, N.S. Reg. 232/2011; O.I.C. 2013-164, N.S. Reg. 208/2013.

Category 8: Truck - Full Trailer Combination

Section 1 - Dimension Limits

DIMENSION	LIMIT
Overall Length	Maximum 23 m
Overall Width	Maximum 2.6 m
Overall Height	Maximum 4.15 m
Box Length	Maximum 20 m
Truck
Length	Maximum 12.5 m
Wheelbase	Not Controlled
Tandem axle spread	Minimum 1.2 m/Maximum 1.85 m
Effective rear overhang	Maximum 4.0 m
Hitch offset	Maximum 1.8 m
Full Trailer
Length	Maximum 12.5 m
Wheelbase	Minimum 6.25 m
Tandem axle spread	Minimum 1.2 m/Maximum 1.85 m
Track width	Minimum 2.5 m/Maximum 2.6 m
Effective rear overhang	Maximum 35% of wheelbase
Converter Dolly	The use of a double drawbar or C Dolly is not permitted on this combination
Interaxle Spacings
Single Axle to Single or Tandem Axle	Minimum 3.0 m
Tandem Axle to Tandem Axle	Minimum 5.0 m

Category 8: Truck - Full Trailer Combination

Section 2 - Weight Limits

WEIGHT	LIMIT
Axle Weight Limits:
Steering Axle	Maximum 8000 kg¹
Single Axle (dual tires)	Maximum 9100 kg
Tandem Axle (including tandem equivalent axle)
Axle spread 1.2 m to 1.85 m	Maximum 18 000 kg
Weight Limitation 1: Sum of axle weights of full trailer 4 axle truck-trailer combination 5 axle truck-trailer combination 6 axle truck-trailer combination 7 axle truck-trailer combination	Maximum 17 000 kg Maximum 17 000 kg Maximum 24 000 kg Maximum 31 000 kg
Gross Vehicle Weight Limits:
Maximum Weight Roads
Four axles	Maximum 34 100 kg
Five axles	Maximum 43 000 kg
Six axles	Maximum 50 000 kg
Seven axles	Maximum 53 500 kg
Intermediate Weight Roads
Four axles	Maximum 34 100 kg
Five axles	Maximum 43 000 kg
Six axles	Maximum 49 500 kg
Seven axles	Maximum 49 500 kg
All Other Highways
Four axles	Maximum 34 100 kg
Five axles	Maximum 41 500 kg
Six axles	Maximum 41 500 kg
Seven axles	Maximum 41 500 kg

Schedule A, Part 2, Category 8, Section 2 amended: O.I.C. 2005-583, N.S. Reg. 234/2005. O.I.C. 2006-547, N.S. Reg. 228/2006. O.I.C. 2007-406, N.S. Reg. 347/2007, O.I.C. 2009-52, N.S. Reg. 32/2009; O.I.C. 2010-5, N.S. Reg. 4/2010; O.I.C. 2013-164, N.S. Reg. 208/2013.

Category 9: Tandem Steering Axle Truck - Full Trailer Combination

Section 1 - Dimension Limits

DIMENSION	LIMIT
Overall Length	Maximum 23 m
Overall Width	Maximum 2.6 m
Overall Height	Maximum 4.15 m
Box Length	Maximum 20 m
Truck
Length	Maximum 12.5 m
Wheelbase	Not Controlled
Tandem steering axle spread	Minimum 1.2 m/Maximum 2.2 m
Tandem drive axle spread	Minimum 1.2 m/Maximum 1.85 m
Effective rear overhang	Maximum 4.0 m
Hitch offset	Maximum 1.8 m
Full Trailer
Length	Maximum 12.5 m
Wheelbase	Minimum 6.25 m
Tandem axle spread	Minimum 1.2 m/Maximum 1.85 m
Track width	Minimum 2.5 m/Maximum 2.6 m
Effective rear overhang	Maximum 35% of wheelbase
Converter Dolly	The use of a double drawbar or C Dolly is not permitted on this combination
Interaxle Spacings
Tandem Steering Axle to Tandem Drive Axle	Minimum 3.65 m
Single Axle to Single or Tandem Axle	Minimum 3.0 m
Tandem Axle to Tandem Axle	Minimum 5.0 m

Schedule A, Part 2, Category 9, Section 2 amended: O.I.C. 2010-5, N.S. Reg. 4/2010.

Category 9: Tandem Steering Axle Truck - Full Trailer Combination

Section 2 - Weight Limits

WEIGHT	LIMIT
Axle Weight Limits:
Tandem Steering Axle	Maximum 16 000 kg
Single Axle (dual tires)	Maximum 9100 kg
Tandem Axle (including tandem equivalent axle)
Axle spread 1.2 m to 1.85 m	Maximum 18 000 kg
Gross Vehicle Weight Limits:
Maximum Weight Roads
Six axles	Maximum 51 000 kg¹
Seven axles	Maximum 53 500 kg¹
Eight axles	Maximum 53 500 kg¹
Intermediate Weight Roads
Six axles	Maximum 49 500 kg¹
Seven axles	Maximum 49 500 kg¹
Eight axles	Maximum 49 500 kg¹
All Other Highways
Six axles	Maximum 41 500 kg¹
Seven axles	Maximum 41 500 kg¹
Eight axles	Maximum 41 500 kg¹

1 This weight limit is decreased in accordance with subsection 7(2) for a combination of vehicles with a tandem steering axle truck that does not meet the interaxle spacing limit of 3.65 m.

Schedule A, Part 2, Category 9, Section 2 amended: O.I.C. 2002-504, N.S. Reg. 140/2002; O.I.C. 2006-547, N.S. Reg. 228/2006; O.I.C. 2007-406, N.S. Reg. 347/2007, O.I.C. 2009-52, N.S. Reg. 32/2009; O.I.C. 2010-5, N.S. Reg. 4/2010; O.I.C. 2013-164, N.S. Reg. 208/2013.

Category 10: Intercity Bus and Recreational Vehicles

Section 1 - Dimension Limits

DIMENSION	LIMIT
Overall Length	Maximum 14.0 m
Overall Width	Maximum 2.6 m
Overall Height	Maximum 4.15 m
Wheelbase	Not Controlled
Tandem Axle Spread	Minimum 1.2 m/Maximum 1.85 m
Effective Rear Overhang	Maximum 4.0 m
Axle Requirements: Overall length 12.5 m or less Overall length greater than 12.5 m	Not Controlled Minimum 3 axles

Schedule A, Part 2, Category 10, Section 1 amended: O.I.C. 2005-583, N.S. Reg. 234/2005.

Category 10: Intercity Bus and Recreational Vehicles

Section 2 - Weight Limits

WEIGHT	LIMIT
Axle Weight Limits:
Steering Axle	Maximum 7250 kg¹
Single Axle (dual tires)	Maximum 9100 kg
Single Axle (single tires)	Maximum 6000 kg
Tandem Axle (dual tires on both axles)	Maximum 18 000 kg
Gross Vehicle Weight Limits:
Maximum Weight Roads
Two axles (4 tires)	Maximum 13 250 kg
Two axles (6 tires)	Maximum 16 350 kg
Three axles (8 tires)	Maximum 20 900 kg
Three axles (10 tires)	Maximum 25 250 kg
Intermediate Weight Roads
Two axles (4 tires)	Maximum 13 250 kg
Two axles (6 tires)	Maximum 16 350 kg
Three axles (8 tires)	Maximum 20 900 kg
Three axles (10 tires)	Maximum 25 250 kg
All Other Highways
Two axles (4 tires)	Maximum 13 250 kg
Two axles (6 tires)	Maximum 16 350 kg
Three axles (8 tires)	Maximum 20 900 kg
Three axles (10 tires)	Maximum 25 250 kg

1 The maximum steering axle weight can be as high as 9100 kg if the load carrying capacity of the axle, tires, and all other components is not exceeded, and the tire loading does not exceed 10 kg/mm of width; however, the maximum gross vehicle weight limit will be based on a steering axle weight of 7250 kg.

Footnote 2 repealed: O.I.C. 2015-362, N.S. Reg. 364/2015.

Schedule A, Part 2, Category 10, Section 2 amended: O.I.C. 2005-583, N.S. Reg. 234/2005; O.I.C. 2009-52, N.S. Reg. 32/2009; O.I.C. 2015-362, N.S. Reg. 364/2015.

Category 10A: Intercity Bus and Recreational Vehicles with Pony Trailer

Section 1 - Dimension Limits

DIMENSION	LIMIT
Overall Length	Maximum 20.0 m
Overall Width	Maximum 2.6 m
Overall Height	Maximum 4.15 m
Intercity Bus
Length	Maximum 14.0 m
Wheelbase	Not Controlled
Tandem axle spread	Minimum 1.2 m/Maximum 1.85 m
Effective rear overhang	Maximum 4.0 m
Axle Requirements
Overall length 12.5 m or less	Not Controlled
Overall length greater than 12.5 m	Minimum 3 axles
Trailer
Wheelbase	Minimum 3.84 m

Schedule A, Part 2, Category 10A, Section 1 added: O.I.C. 2011-255, N.S. Reg. 232/2011.

Category 10A: Intercity Bus and Recreational Vehicles with Pony Trailer

Section 2 - Weight Limits

WEIGHT	LIMIT
Axle Weight Limits:
Steering axle	Maximum 7250 kg¹
Single axle (dual tires)	Maximum 9100 kg
Single axle (single tires)	Maximum 6000 kg
Tandem axle (dual tires on both axles)	Maximum 18 000 kg
Trailer axle(s) (single or tandem axle, 2 or 4 tires on each axle)	Maximum 6000 kg
Gross Vehicle Weight Limits
Maximum Weight Roads
Two axle bus (4 tires) + pony trailer	Maximum 19 250 kg
Two axle bus (6 tires) + pony trailer	Maximum 22 350 kg
Three axle bus (8 tires) + pony trailer	Maximum 26 900 kg
Three axle bus (10 tires) + pony trailer	Maximum 31 250 kg
Intermediate Weight Roads
Two axle bus (4 tires) + pony trailer	Maximum 19 250 kg
Two axle bus (6 tires) + pony trailer	Maximum 22 350 kg
Three axle bus (8 tires) + pony trailer	Maximum 26 900 kg
Three axle bus (10 tires) + pony trailer	Maximum 31 250 kg
All Other Highways
Two axle bus (4 tires) + pony trailer	Maximum 19 250 kg
Two axle bus (6 tires) + pony trailer	Maximum 22 350 kg
Three axle bus (8 tires) + pony trailer	Maximum 26 900 kg
Three axle bus (10 tires) + pony trailer	Maximum 31 250 kg

1 The maximum steering axle weight can be as high as 9100 kg if the load-carrying capacity of the axle, tires, and all other components is not exceeded, and the tire loading does not exceed 10 kg/mm of width; however, the maximum gross vehicle weight limit will be based on a steering axle weight of 7250 kg.

Footnote 2 repealed: O.I.C. 2015-362, N.S. Reg. 364/2015.

Schedule A, Part 2, Category 10A, Section 2 added: O.I.C. 2011-255, N.S. Reg. 232/2011; amended: O.I.C. 2015-362, N.S. Reg. 364/2015.

Category 11: Stinger Steer Auto Carrier
Section 1 - Dimension Limits

DIMENSION	LIMIT
Overall Length - without load - with load	Maximum 23 m Maximum 25 m
Overall Width	Maximum 2.6 m¹
Overall Height - without load - with load	Maximum 4.15 m Maximum 4.3 m²
Truck
Overall Length	Maximum 12.5 m
Tandem Axle Spread	Minimum 1.2 m/Maximum 1.85 m
Load Overhang at front of truck (beyond truck bumper)	Maximum 1.0 m
Effective Rear Overhang - without load - with load	Maximum 4.0 m Maximum 4.6 m
Trailer
Length	Maximum 14.65 m
Wheelbase	Minimum 6.25 m/Maximum 12.5 m
Effective Rear Overhang	Maximum 4 m or 42% of wheelbase, whichever is greater
Load overhang at rear of trailer	Maximum 1.2 m
Track Width	Maximum 2.6 m
Interaxle Spacings
Single Axle to Single or Tandem Axle	Minimum 3.0 m
Tandem Axle to Tandem Axle	Minimum 5.0 m

1 The maximum width for any load overhanging the front or rear of the combination of vehicles is 2.1 m.

2 The driver must ensure there is a safe clearance under any physical overpass, including structures and utility lines.

Schedule A, Part 2, Category 11, Section added: O.I.C. 2010-5, N.S. Reg. 4/2010.

Category 11: Stinger Steer Auto Carrier

Section 2 - Weight Limits

WEIGHT	LIMIT
Axle Weights Limits
Steering Axle	Maximum 5500 kg¹
Single Axle (dual tires)	Maximum 9100 kg
Tandem Axle (including tandem equivalent axle)
Axle Spread 1.2 m to 1.85 m	Maximum 18 000 kg
Maximum Weight Roads
Three Axles	Maximum 23 700 kg
Four Axles	Maximum 32 600 kg
Five Axles	Maximum 41 500 kg
Intermediate Weight Roads
Three Axles	Maximum 23 700 kg
Four Axles	Maximum 32 600 kg
Five Axles	Maximum 41 500 kg
All Other Highways
Three Axles	Maximum 23 700 kg
Four Axles	Maximum 32 600 kg
Five Axles	Maximum 41 500 kg

1 The maximum steering axle weight can be as high as 9100 kg for a vehicle or combination of vehicles if the load-carrying capacity of the axle, tires, and all other components is not exceeded and the tire loading does not exceed 10 kg/mm of width; however, the maximum gross vehicle weight limit will be based on a steering axle weight of 5500 kg.

Schedule A, Part 2, Category 11, Section 2 added: O.I.C. 2010-5, N.S. Reg. 4/2010.

Category 12: Tractor Self-Steering Quad Axle Semi-trailer

Section 1 - Dimension Limits

DIMENSION	LIMIT
Overall Length	Maximum 23 m
Overall Width	Maximum 2.6 m
Overall Height	Maximum 4.15 m
Tractor
Wheelbase	Maximum 6.2 m
Tandem axle spread	Minimum 1.2 m/Maximum 1.85 m
Semi-trailer¹
Length	Maximum 16.2 m
Wheelbase	Maximum 12.5 m
Kingpin Setback	Maximum 2.0 m radius
Effective Rear Overhang	Maximum 35% of wheelbase
Tridem axle spread²	Minimum 3.0 m/Maximum 3.7 m
Inter-vehicle distance 1 - tridem spread 3.0 m to 3.7 m - tridem spread 3.6 m to 3.7 m	Minimum 6.0 m Minimum 5.5 m
Inter-vehicle distance 2	Minimum > 2.5 m/Maximum 3.0 m
Track Width	Minimum 2.5 m/Maximum 2.6 m
Interaxle Spacing
Steering axle to Tandem Axle	Minimum 3.0 m

1 The semi-trailer, if used to carry liquid bulk products, must be equipped with an electronic vehicle stability system.

2The tridem axle must utilize a full air suspension system.

Schedule A, Part 2, Category 12, Section 1, footnote 1 amended: O.I.C. 2020-065, N.S. Reg. 32/2020.

Schedule A, Part 2, Category 12, Section 1 added: O.I.C. 2010-5, N.S. Reg. 4/2010.

Category 12: Tractor Self-Steering Quad Axle Semi-trailer

Section 2 - Weight Limits

WEIGHT	LIMIT
Axle Weights Limits
Steering Axle	Maximum 5500 kg¹
Self-Steering Axle²	Maximum 8000 kg
Tandem Axle (including tandem equivalent axle)
Axle Spread 1.2 m to 1.85 m	Maximum 18 000 kg
Self-Steering Quad Axle³
Tridem axle spread 3.0 m to less than 3.6 m	Maximum 30 500 kg
Tridem axle spread 3.6 m to 3.7 m	Maximum 32 000 kg
Gross Vehicle Weight Limits
Maximum Weight Roads
Seven axles - tridem 3.0 m to less than 3.6 m	Maximum 54 000 kg
Seven axles - tridem 3.6 m to 3.7 m	Maximum 55 500 kg
Intermediate Weight Roads	Maximum 49 500 kg^{4, 5}
All Other Highways	Maximum 41 500 kg⁶

1 The maximum steering axle weight can be as high as 9100 kg for a vehicle or combination of vehicles if the load-carrying capacity of the axle, tires, and all other components is not exceeded and the tire loading does not exceed 10 kg/mm of width; however, the maximum gross vehicle weight limit will be based on a steering axle weight of 5500 kg.

2 The self-steering axle may be equipped with single tires with a minimum width of 365 mm, or with dual tires. The self-steering axle may be liftable, but the controls, whether remote or manual, to raise or lower the self-steering axle must be located on the semi-trailer only, except for a semi-trailer used to carry raw forest products where the control may be in the cab of the tractor. The self-steering axle may be automatically raised when the vehicle is reversing. The self-steering axle may be manually raised to provide emergency drive axle traction, but only if the controls to manually raise the self-steering axle do not activate unless the emergency 4-way flashers are activated, and the controls must include a device which prevents the raising the self-steering axle at any speed greater than 60 km/hr.

3 The self-steering quad axle semi-trailer must be equipped with a device that accurately displays the total weight on the self-steering quad axle in kilograms, or with a device and a table or chart from the combined use of which the total weight on the self-steering quad axle in kilograms may be readily and accurately obtained.

4 For roads listed in Schedule B to the Road List Regulations made under the Act, the maximum weight is 54 000 kg for 7 axles with a tridem axle spread of 3.0 m to less than 3.6 m, and 55 500 kg for 7 axles with a tridem axle spread of 3.6 m to 3.7 m.

5 Maximum quad axle weight is 26 000 kg.

6 Maximum quad axle weight is 18 000 kg.

Schedule A, Part 2, Category 12, Section 2, table replaced: O.I.C. 2015-362, N.S. Reg. 364/2015.

Schedule A, Part 2, Category 12, Section 2 added: O.I.C. 2010-5, N.S. Reg. 4/2010.

Schedule A-1: Maximum Semi-trailer Wheelbases

Tractor Wheelbase	Maximum Semi-trailer Wheelbase
6.2 m and greater	12.50 m
> 6.2 m to 6.3 m	12.47 m
> 6.3 m to 6.4 m	12.40 m
> 6.4 m to 6.5 m	12.33 m
> 6.5 m to 6.6 m	12.27 m
> 6.6 m to 6.7 m	12.20 m
> 6.7 m to 6.8 m	12.13 m
> 6.8 m to 6.9 m	12.07 m
> 6.9 m to 7.0 m	12.00 m
> 7.0 m to 7.1 m	11.93 m
> 7.1 m to 7.2 m	11.87 m

Schedule A-1 added: O.I.C. 2010-5, N.S. Reg. 4/2010.

Schedule A-2: Pony Trailer Axle Weight Limits for Pony Trailers Model Year 2002
and Earlier

Wheelbase	Maximum Axle Weight
Wheelbase	2-axle	3-axle
6.25 m and greater	18 000 kg	21 000 kg
5.75 m - 6.24 m	17 000 kg	20 000 kg
5.25 m - 5.74 m	16 000 kg	19 000 kg
4.75 m - 5.24 m	15 000 kg	17 750 kg
4.25 m - 4.74 m	14 000 kg	16 500 kg
3.75 m - 4.24 m	13 000 kg	15 000 kg
3.25 m - 3.74 m	12 000 kg	13 500 kg

Schedule A-2 added: O.I.C. 2010-5, N.S. Reg. 4/2010; replaced: O.I.C. 2011-255, N.S. Reg. 232/2011.

Schedule A-3: Semi-trailer Axle Weight Limits for Semi-trailers Model Year 2002
and Earlier

Maximum Weight Roads
Wheelbase	Single	Tandem	Tridem and Triaxle
Wheelbase	Single	Tandem	Axle spread: 2.4 m to <3.0 m	Axle spread: 3.0 m to <3.6 m	Axle spread: 3.6 m to <3.7 m¹
6.25 m and greater	9100 kg	18 000 kg	21 000 kg	24 000 kg	26 000 kg
5.75 m - 6.24 m	8100 kg	17 000 kg	20 000 kg	23 000 kg	25 000 kg
5.25 m - 5.74 m	7100 kg	16 000 kg	19 000 kg	22 000 kg	24 000 kg
4.75 m - 5.24 m	6100 kg	15 000 kg	18 000 kg	21 000 kg	23 000 kg
4.25 m - 4.74 m	5100 kg	14 000 kg	17 000 kg	20 000 kg	22 000 kg
3.75 m - 4.24 m	4100 kg	13 000 kg	16 000 kg	19 000 kg	21 000 kg
Intermediate Weight Roads and B-Train Routes
Wheelbase	Single	Tandem	Tridem and Triaxle
Wheelbase	Single	Tandem	Axle spread: 2.4 m to <3.0 m	Axle spread: 3.0 m to <3.6 m	Axle spread: 3.6 m to <3.7 m¹
6.25 m and greater	9100 kg	18 000 kg	21 000 kg	24 000 kg	24 000 kg
5.75 m - 6.24 m	8100 kg	17 000 kg	20 000 kg	23 000 kg	24 000 kg
5.25 m - 5.74 m	7100 kg

Dimension	Limit
Overall Height Limit	Maximum 4.15 m⁴
Overall Width Limit	Maximum 2.6 m^1,2,5
Overall Length Limits Tractor Semi-Trailer A or C Train Double B Train Double Truck - Pony Trailer Combination Truck - Full Trailer Combination	Maximum 23 m^3,6 Maximum 25 m Maximum 27.5 m Maximum 23 m Maximum 23 m
Box Length Limit A, B or C Train Double Truck - Pony Trailer Combination Truck - Full Trailer Combination	Maximum 20.0 m Maximum 20.0 m Maximum 20.0 m
Trailer Length Limits Semi-trailer Full Trailer Pony Trailer	Maximum 16.2 m Maximum 12.5 m Maximum 12.5 m

Dimension	Limit
Tractor Wheelbase	Maximum 6.2 m⁶
Trailer Wheelbase Semi-trailer Full Trailer Pony Trailer	Min 6.25 m/Max 12.5 m Minimum 6.25 m Minimum 6.25 m
Effective Rear Overhang Straight Truck Semi-trailer Full Trailer Pony Trailer	Maximum 4.0 m Maximum 35% of wheelbase⁷ Maximum 35% of wheelbase Maximum 4.0 m
Rear Overhang¹	Maximum 2.0 m⁸
Front Overhang²	Maximum 1.0 m
Kingpin Setback (Semi-trailer)	Maximum 2.0 m radius
Track Width Semi-trailer, Full Trailer or Pony Trailer	Minimum 2.5 m/Maximum 2.6 m⁵
Minimum Interaxle Spacing Requirements³ Single Axle to Single Axle⁴ Single Axle to Tandem axle⁴ Single Axle to Tridem Axle Tandem Axle to Tandem Axle Tandem Axle to Tridem Axle	Minimum 3.0 m Minimum 3.0 m Minimum 5.0 m Minimum 5.0 m Minimum 5.5 m

WEIGHT	LIMIT
Axle Weight Limits:
Steering Axle	Maximum 5500 kg¹
Single Axle (dual tires)	Maximum 9100 kg
Tandem Axle (including tandem equivalent axle)
Axle spread 1.2 m to 1.85 m	Maximum 18 000 kg
Axle spread > 1.85 m	Maximum 18 000 kg
Tridem Axle (including tridem equivalent axle)
Axle spread 2.4 m to less than 3.0 m	Maximum 21 000 kg
Axle spread 3.0 m to less than 3.6 m	Maximum 24 000 kg
Axle spread 3.6 m to 3.7 m	Maximum 26 000 kg
Axle spread greater than 3. 7 m	Maximum 18 000 kg⁴
Triaxle Axle
Axle spread 2.4 m to less than 3.0 m	Maximum 18 000 kg²
Axle spread 3.0 m to less than 3.6 m	Maximum 18 000 kg³
Axle spread 3.6 m to 4.9 m	Maximum 18 000 kg⁴
Gross Vehicle Weight Limits¹⁸:
Maximum Weight Roads
Three axles	Maximum 23 700 kg
Four axles–with tandem spread 1.2 m to 1.85 m	Maximum 32 600 kg
Four axles–with semi-trailer tandem spread > 1.85 m	Maximum 32 600 kg
Five axles–with tandem spreads 1.2 m to 1.85 m	Maximum 41 500 kg
Five axles–with semi-trailer tandem spread > 1.85 m	Maximum 41 500 kg
Five axles–with tridem spread 2.4 m to < 3.0 m	Maximum 35 600 kg
Five axles–with tridem spread 3.0 m to < 3.6 m	Maximum 38 600 kg
Five axles–with tridem spread 3.6 m to 3.7 m	Maximum 40 600 kg
Five axles–with tridem spread > 3.7 m	Maximum 32 600 kg^9,11
Five axles–with triaxle spread 2.4 m to < 3.0 m	Maximum 32 600 kg^10,12
Five axles–with triaxle spread 3.0 m to < 3.6 m	Maximum 32 600 kg^10,13
Five axles–with triaxle spread 3.6 m to 4.9 m	Maximum 32 600 kg^10,14
Six axles–with tridem spread 2.4 m to < 3.0 m	Maximum 44 500 kg
Six axles–with tridem spread 3.0 m to < 3.6 m	Maximum 47 500 kg
Six axles–with tridem spread 3.6 m to 3.7 m	Maximum 49 500 kg
Six axles–with tridem spread > 3.7 m	Maximum 41 500 kg^9,16
Six axles–with triaxle spread 2.4 m to < 3.0 m	Maximum 41 500 kg⁵
Six axles–with triaxle spread 3.0 m to < 3.6 m	Maximum 41 500 kg⁶
Six axles–with triaxle spread 3.6 m to 4.9 m	Maximum 41 500 kg⁷
Intermediate Weight Roads
Three axles	Maximum 23 700 kg
Four axles–with tandem spread 1.2 m to 1.85 m	Maximum 32 600 kg
Four axles–with semi-trailer tandem spread > 1.85 m	Maximum 32 600 kg
Five axles–with tandem spreads 1.2 m to 1.85 m	Maximum 41 500 kg
Five axles–with semi-trailer tandem spread > 1.85 m	Maximum 41 500 kg
Five axles–with tridem spread 2.4 m to < 3.0 m	Maximum 35 600 kg
Five axles–with tridem spread 3.0 m to < 3.6 m	Maximum 38 600 kg
Five axles–with tridem spread 3.6 m to 3.7 m	Maximum 38 600 kg⁸
Five axles–with tridem spread > 3.7 m	Maximum 32 600 kg^9,15
Five axles–with triaxle spread 2.4 m to < 3.0 m	Maximum 32 600 kg¹⁰
Five axles–with triaxle spread 3.0 m to < 3.6 m	Maximum 32 600 kg¹⁰
Five axles–with triaxle spread 3.6 m to 4.9 m	Maximum 32 600 kg¹⁰
Six axles–with tridem spread 2.4 m to < 3.0 m	Maximum 44 500 kg
Six axles–with tridem spread 3.0 m to < 3.6 m	Maximum 47 500 kg
Six axles–with tridem spread 3.6 m to 3.7 m	Maximum 49 500 kg
Six axles–with tridem spread > 3.7 m	Maximum 41 500 kg^9,16
Six axles–with triaxle spread 2.4 m to < 3.0 m	Maximum 41 500 kg¹⁰
Six axles–with triaxle spread 3.0 m to < 3.6 m	Maximum 41 500 kg¹⁰
Six axles–with triaxle spread 3.6 m to 4.9 m	Maximum 41 500 kg¹⁰
All Other Highways
Three axles	Maximum 23 700 kg
Four axles–with tandem spread 1.2 m to 1.85 m	Maximum 32 600 kg
Four axles–with semi-trailer tandem spread > 1.85 m	Maximum 32 600 kg
Five axles–with tandem spreads 1.2 m to 1.85 m	Maximum 41 500 kg
Five axles–with semi-trailer tandem spread > 1.85 m	Maximum 41 500 kg
Five axles–with tridem spread 2.4 m to < 3.0 m	Maximum 32 600 kg⁹
Five axles–with tridem spread 3.0 m to < 3.6 m	Maximum 32 600 kg⁹
Five axles–with tridem spread 3.6 m to 3.7 m	Maximum 32 600 kg⁹
Five axles–with tridem spread > 3.7 m	Maximum 32 600 kg⁹
Five axles–with triaxle spread 2.4 m to < 3.0 m	Maximum 32 600 kg¹⁰
Five axles–with triaxle spread 3.0 m to < 3.6 m	Maximum 32 600 kg¹⁰
Five axles–with triaxle spread 3.6 m to 4.9 m	Maximum 32 600 kg¹⁰
Six axles–with tridem spread 2.4 m to < 3.0 m	Maximum 41 500 kg⁹
Six axles–with tridem spread 3.0 m to < 3.6 m	Maximum 41 500 kg⁹
Six axles–with tridem spread 3.6 m to 3.7 m	Maximum 41 500 kg⁹
Six axles–with tridem spread > 3.7 m	Maximum 41 500 kg⁹
Six axles–with triaxle spread 2.4 m to < 3.0 m	Maximum 41 500 kg¹⁰
Six axles–with triaxle spread 3.0 m to < 3.6 m	Maximum 41 500 kg¹⁰
Six axles–with triaxle spread 3.6 m to 4.9 m	Maximum 41 500 kg¹⁰

Category 1A: Tridem Drive Tractor Semi-trailer
Section 2: Weight Limits

WEIGHT	LIMIT
Axle Weight Limits:
Steering Axle	Maximum 7300 kg
Single Axle (dual tires)	Maximum 9100 kg
Tandem Axle
Axle spread 1.2 m - 1.85 m	Maximum 18 000 kg
Tridem Axle
Tractor drive axle 2.4 m to 2.8 m	Maximum 21 000 kg
Semi-trailer axle spread 2.4 m to less than 3.0 m	Maximum 21 000 kg
Semi-trailer axle spread 3.0 m to less than 3.6 m	Maximum 24 000 kg
Semi-trailer axle spread 3.6 m to 3.7 m	Maximum 26 000 kg
Gross Vehicle Weight Limits:
Maximum Weight Roads
Single axle Semi-trailer	Maximum 37 400 kg
Tandem semi-trailer	Maximum 46 300 kg
Tridem semi-trailer 2.4 m to less than 3.0 m spread	Maximum 49 300 kg
Tridem semi-trailer 3.0 m to less than 3.6 m spread	Maximum 52 300 kg
Tridem semi-trailer 3.6 m to 3.7 m spread	Maximum 54 300 kg
Schedule B Weight Roads
Single axle semi-trailer	Maximum 37 400 kg
Tandem semi-trailer	Maximum 46 300 kg
Tridem semi-trailer 2.4 m to less than 3.0 m spread	Maximum 49 300 kg
Tridem semi-trailer 3.0 m to less than 3.6 m spread	Maximum 52 300 kg
Tridem semi-trailer 3.6 m to 3.7 m spread	Maximum 54 300 kg
Intermediate Weight Roads
Single axle semi-trailer	Maximum 37 400 kg
Tandem semi-trailer	Maximum 46 300 kg
Tridem semi-trailer 2.4 m to less than 3.0 m spread	Maximum 49 300 kg
Tridem semi-trailer 3.0 m to less than 3.6 m spread	Maximum 49 500 kg
Tridem semi-trailer 3.6 m to 3.7 m spread	Maximum 49 500 kg
All other Highways
Single axle semi-trailer	Maximum 37 400 kg
Tandem semi-trailer	Maximum 41 500 kg
Tridem semi-trailer 2.4 m to less than 3.0 m spread	Maximum 41 500 kg
Tridem semi-trailer 3.0 m to less than 3.6 m spread	Maximum 41 500 kg
Tridem semi-trailer 3.6 m to 3.7 m spread	Maximum 41 500 kg

Category 1A: Tridem Drive Tractor Semi-trailer
Section 1- Dimension Limits

DIMENSION	LIMIT
Overall Length	Maximum 23.5 m
Overall Width	Maximum 2.6 m
Overall Height	Maximum 4.15 m
Tractor:
Wheelbase	Minimum 6.6 m/Maximum 6.8 m
Tridem drive axle spread	Minimum 2.4 m/Maximum 2.8 m
Semi-trailer:
Length	Maximum 16.2 m
Wheelbase single, tandem or tridem	Minimum 6.25 m/Maximum 12.0 m
Kingpin setback	Maximum 2.0 m radius
Effective rear overhang	Maximum 35% of wheelbase
Tandem axle spread	Minimum 1.2 m/Maximum 1.85 m
Tridem axle spread	Minimum 2.4 m/Maximum 3.7 m
Track width	Minimum 2.5 m/Maximum 2.6 m
Interaxle Spacings:
Single axle to tridem axle	Minimum 3.0 m
Tandem axle to tridem axle	Minimum 5.5 m
Tridem axle to tridem axle	Minimum 6.0 m