Acts and Regulations

2020-54 - Motor Vehicle Act

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NEW BRUNSWICK
REGULATION 2020-54
under the
Motor Vehicle Act
(O.C. 2020-234)
Filed November 17, 2020
1Section 2 of New Brunswick Regulation 2001-67 under the Motor Vehicle Act is amended
(a) in the definition “length” by repealing paragraph (c) and substituting the following: 
(c) when used with reference to a pony trailer, the external longitudinal distance from the foremost point of the drawbar of the pony trailer or the foremost point of the cargo to the rearmost point of the trailer or cargo, and
(b) by repealing the definition “tandem equivalent axle” and substituting the following:
“tandem equivalent axle” means a group of two consecutive axles within a vehicle, one of which is a lowered lift axle, that are(essieu tandem équivalent)
(a) attached to the vehicle by identical pneumatic suspensions which achieve load equalization between axles, and
(b) fitted with the same number and size of tires on each axle;
(c) by repealing the definition “track width” and substituting the following: 
“track width” means the width of an axle across the outside faces of the outer tires measured at any point above the lowest point of the rim;(largeur de roulement)
(d) by adding the following definitions in alphabetical order: 
“aerodynamic device” means a device, or devices, installed on the rear of trucks, trailers, or semi-trailers for the purpose of reducing wind resistance or aerodynamic drag but not for carrying cargo;(dispositif aérodynamique)
“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;(timon)
“idle reduction technology” means an advanced truck stop electrification system, auxiliary power unit or other technology that(technologie de réduction du temps de marche au ralenti)
(a) is used to reduce long-duration idling, and
(b) allows for the main drive engine or auxiliary refrigeration engine to be shut down;
“overall width” means greatest overall transverse dimension of a vehicle or combination of vehicles including cargo;(largeur hors tout)
“Stinger Steer automobile or boat carrier” means a tractor and semi-trailer with the fifth wheel assembly mounted in a dropframe located behind and below the centre of the rearmost axle of the tractor;(porte-automobiles ou porte-bateaux de type « Stinger Steer »)
“tridem drive axle” means a drive axle composed of a tridem axle in which each axle of the tridem axle transmits tractive power to its wheels;(essieu moteur tridem)
“tridem drive tractor” means a truck tractor equipped with a tridem drive axle;(tracteur moteur tridem)
2Section 3 of the Regulation is amended
(a) by repealing subsection (3.2);
(b) by repealing subsection (3.3);
(c) by repealing subsection (3.4);
(d) by adding after subsection (4) the following: 
3(4.01)A person may operate or move and an owner may permit to be operated or moved on a highway a B train double trailer configuration when the wheelbase of the truck tractor is greater than 6.2 metres if the following conditions are met:
(a) the wheelbase of the truck tractor does not exceed 6.8 metres;
(b) the wheelbase of the truck tractor does not exceed the maximum sum of semi-trailer wheelbases set out in the following table: 
Tractor wheelbase
Maximum sum of
semi-trailer wheelbases
6.2 m or less
≤ 17.00 m
> 6.2 m to 6.3 m
≤ 16.53 m
> 6.3 m to 6.4 m
≤ 16.44 m
> 6.4 m to 6.5 m
≤ 16.36 m
> 6.5 m to 6.6 m
≤ 16.27 m
> 6.6 m to 6.7 m
≤ 16.19 m
> 6.7 m to 6.8 m
≤ 16.10 m
(c) the truck tractor and the semi-trailer comply with all of the other dimension requirements of subsections (1) and (2).
(e) by repealing subsection (4.1) and substituting the following: 
3(4.1)A person may operate or move and an owner may permit to be operated or moved on a highway a truck tractor in combination with a single semi-trailer when the wheelbase of the truck tractor is greater than 6.2 metres if the following conditions are met: 
(a) the wheelbase of the truck tractor does not exceed 7.2 metres;
(b) the wheelbase of the truck tractor does not exceed the maximum semi-trailer wheelbase set out in the following table:
Tractor wheelbase
Maximum semi-trailer wheelbase
6.2 m or less
≤ 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
(c) the truck tractor and the semi-trailer comply with all of the other dimension requirements of subsections (1) and (2).
3Section 6 of the Regulation is amended
(a) by adding before subsection (1) the following: 
6(0.1)For the purposes of this section, “the rear of the vehicle” means rear extremity as defined in Schedule IV of the Motor Vehicle Safety Regulations, C.R.C., c. 1038, under the Motor Vehicle Safety Act (Canada), not including aerodynamic devices.
6(0.2)Aerodynamic devices installed at the rear of trucks, trailers and semi-trailers shall not be included in the measurement of overall length, trailer length, semi-trailer length, box length, rear overhang or effective rear overhang, provided that
(a) any portion of the deployed device more than 1.9 metres above the ground does not protrude more than 1.52 metres beyond the rear of the vehicle;
(b) any portion of the deployed device within 1.9 metres of the ground does not protrude beyond a transverse plane
(i) starting at the rear bottom edge of the rear impact guard or, if the vehicle is not so equipped, starting at the lowest point of the rear of the vehicle, and
(ii) intersecting a point that is 1.74 metres above the ground and 1.21 metres behind the rear of the vehicle; and
(c) the devices are capable of being folded to within 0.305 metres of the rear of the vehicle.
(b) by repealing subsection (3) and substituting the following: 
6(3)Subject to subsection (4), no person shall operate or move and no owner shall permit to be operated or moved on a highway a combination of vehicles coupled together that has an overall length that exceeds 23 metres, or 23.5 metres in the case of a tridem drive tractor semi-trailer combination.
(c) in paragraph (4)(b) in the portion preceding subparagraph (i) by striking out “25.0 metres” and substituting “27.5 metres”.
4Section 7 of the Regulation is amended
(a) by repealing paragraph (5)(d);
(b) in paragraph (6) in the portion preceding paragraph (a) by striking out “The maximum mass for an axle” and substituting “Subject to subsection (7.1), the maximum mass for an axle”;
(c) by adding after subsection (7) the following: 
7(7.1)If a truck tractor in a combination of vehicles is equipped with idle reduction technology, an additional allowance of up to 225 kilograms shall be added to the combined mass of the steering axle and drive axle group of the truck tractor.
(d) by repealing subsection (8).
5Section 8 of the Regulation is amended
(a) in subsection (1) by striking out “Subject to subsections (3) and (4)” and substituting “Subject to subsections (3), (4) and (5)”;
(b) in subsection (4) by striking out “The maximum gross mass” and substituting “Subject to subsection (5), the maximum gross mass”;
(c) by adding after subsection (4) the following: 
8(5)If a truck tractor in a combination of vehicles is equipped with idle reduction technology, an additional allowance of up to 225 kilograms shall be added to the maximum gross mass allocated to the combination of vehicles.
8(6)Subject to subsection (5), no person shall operate or move and no owner shall permit to be operated or moved on a highway a vehicle or combination of vehicles coupled together that has a gross mass that exceeds the maximum gross mass for the vehicle or combination of vehicles as set out in those portions of Schedule A entitled “Gross Vehicle Mass Limits”.
6Section 12.2 of the Regulation is amended by adding after paragraph (d) the following: 
(d.1) subject to subsections 7(7.1) and 8(5), if a semi-trailer is designed to transport general freight,
(i) the axle group mass shall not exceed 26 000 kilograms, and
(ii) gross vehicle mass shall not exceed 49 500 kilograms;
7Schedule A of the Regulation is repealed and the attached Schedule A is substituted.
8Schedule C of the regulation is amended by adding after
6(7)..............E
the following: 
8(6)..............E
SCHEDULE A
DIMENSIONS AND MASS LIMITS FOR SPECIFIC CONFIGURATIONS
1-A
A Train Double
Dimension Limits
Dimension
Limit
Overall Width
Maximum 2.6 m
Overall Height
Maximum 4.15 m
Overall Length
Maximum 25 m
Box Length
Maximum 20 m
Truck Tractor
Wheelbase
Maximum 6.2 m
Tandem Axle Spread
See 1-B
Lead Semi-trailer
Wheelbase
Minimum 6.25 m
Kingpin Setback
Maximum 2 m radius
Tandem Axle Spread
See 1-B
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
See 1-B
Track Width
Minimum 2.5 m / Maximum 2.6 m
Interaxle Spacings1
Dimension “A”
See 1-B
Single Axle to Single or Tandem Axle
Minimum 3 m
Tandem Axle to Tandem Axle
Minimum 5 m
1See subsections 3(4) and (5).
1-B
A Train Double
Mass Limits
Mass
Limit
Axle Mass Limits
Steering Axle
Maximum 5 500 kg1
Single Axle
Maximum 9 100 kg2
Tandem Axle
Axle Spread less than 1.2 m
Maximum 9 100 kg
Axle Spread 1.2 m - 1.85 m
Maximum 18 000 kg
Axle Spread exceeding 1.85 m
Maximum 18 000 kg3
Mass Limitation1
(If Dimension “A” is less than 3 m) - See 1-A
Sum of axle masses of lead semi-trailer plus mass of converter dolly axle(s)

For a 2-axle group: maximum of 18 000 kg
For a 3-axle group: maximum of 24 000 kg
Mass Limitation2
Sum of axle masses of full trailer or second semi-trailer
 
Maximum: the sum of the mass of the tractor drive axle(s) and the mass of the axle(s) on the lead semi-trailer
Gross Vehicle Mass Limits4
Five axles
Maximum 41 900 kg
Six axles
Maximum 50 800 kg
Seven axles
Maximum 53 500 kg
Eight axles
Maximum 53 500 kg
1See paragraph 7(1)(a) and subsections 7(2), (3), (4) and 8(1).
2See subsection 7(6).
3Axle spread greater than 1.85 m not applicable to drive axle.
4See subsection 8(5).
2-A
B Train Double
Dimension Limits
Dimension
Limit
Overall Width
Maximum 2.6 m
Overall Height
Maximum 4.15 m
Overall Length
Maximum 27.5 m
Box Length
Maximum 20 m
Truck Tractor
Wheelbase
Maximum 6.2 m2
Tandem axle spread
See 2-B
Lead Semi-trailer
Wheelbase
Minimum 6.25 m
Kingpin setback
Maximum 2 m radius
Axle spread
See 2-B
Tridem axle spread
See 2-B
Track width
Minimum 2.5 m / Maximum 2.6 m
Centre of fifth wheel assembly
Maximum 0.3 m rearward of the centre of the rearmost axle on the semi-trailer
Second Semi-trailer
Wheelbase
Minimum 6.25 m
Kingpin setback
Maximum 2 m radius
Tandem axle spread
See 2-B
Tridem axle spread
See 2-B
Track width
Minimum 2.5 m / Maximum 2.6 m
Sum of Semi-trailer Wheelbases
Maximum 17 m
Interaxle Spacings1
Single axle to single or tandem axle
Minimum 3 m
Tandem axle to tandem axle
Minimum 5 m
Tandem axle to tridem axle
Minimum 5.5 m
Tridem axle to tridem axle
Minimum 6 m
1See subsections 3(4) and (5).
2See subsection 3(4.1).
2-B
B Train Double
Mass Limits
Mass
Limit
Axle Mass Limits
Steering Axle
Maximum 5 500 kg1
Single Axle
Maximum 9 100 kg2
Tandem Axle
Axle spread less than 1.2 m
Maximum 9 100 kg
Axle spread 1.2 m to 1.85 m
Maximum 18 000 kg
Axle spread exceeding 1.85 m
Maximum 18 000 kg3
Tridem Axle
Axle spread less than 2.4 m
Maximum 18 000 kg
Axle spread 2.4 m to less than 3 m
Maximum 21 000 kg
Axle spread 3 m to 3.1 m
Maximum 24 000 kg
Gross Vehicle Mass Limits4
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
Nine axles
Maximum 62 500 kg
1See paragraph 7(1)(a) and subsections 7(2), (3), (4) and 8(1).
2See subsection 7(6).
3Axle spread greater than 1.85 m not applicable to drive axle.
4See subsection 8(5) of the Regulation.
3-A
C Train Double
Dimension Limits
 
Dimension
Limit
Overall Width
Maximum 2.6 m
Overall Height
Maximum 4.15 m
Overall Length
Maximum 25 m
Box Length
Maximum 20 m
Truck Tractor
Wheelbase
Maximum 6.2 m
Tandem axle spread
See 3-B
Lead Semi-trailer
Wheelbase
Minimum 6.25 m
Kingpin setback
Maximum 2 m radius
Tandem axle spread
See 3-B
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
See 3-B
Track width
Minimum 2.5 m / Maximum 2.6 m
C-Dolly Drawbar Length
Maximum 2 m
Interaxle Spacings1
Dimension “A”
See 3-B
Single axle to single or tandem axle
Minimum 3 m
Tandem axle to tandem axle
Minimum 5 m
1See subsections 3(4) et (5).
3-B
C Train Double
Mass Limits
Mass
Limit
Axle Mass Limits
Steering Axle
Maximum 5 500 kg1
Single Axle
Maximum 9 100 kg2
Tandem Axle
Axle spread less than 1.2 m
Maximum 9 100 kg
Axle spread 1.2 m - 1.85 m
Maximum 18 000 kg
Axle spread exceeding 1.85 m
Maximum 18 000 kg3
Mass Limitation1
(If dimension “A” is less than 3 m) - See 3-A
Sum of axle masses of lead semi-trailer plus mass of converter dolly axle(s)

For a 2-axle group:  maximum of 18 000 kg
For a 3-axle group:  maximum of 24 000 kg
Mass Limitation2
Sum of axle masses of full trailer or second semi-trailer

Maximum:  the sum of the mass of the drive axle(s) and the mass of the axle(s) on the lead semi-trailer
Gross Vehicle Mass Limits4
Five axles
Maximum 41 900 kg
Six axles
Maximum 50 800 kg
Seven axles
Maximum 55 600 kg
Eight axles
Maximum 58 500 kg
1See paragraph 7(1)(a) and subsections 7(2), (3), (4) and 8(1).
2See subsections 7(6).
3Axle spread greater than 1.85 m not applicable to drive axle.
4See subsection 8(5).
4-A
Intercity Bus or Recreational Vehicle
Dimension Limits
Dimension
Limit
Overall Width
Maximum 2.6 m
Overall Height
Maximum 4.15 m
Overall Length
Maximum 14 m
Tandem axle spread
Minimum 1.2 m / Maximum 1.85 m
Effective rear overhang
Maximum 4 m
Axle Requirements
Overall length 12.5 m or less
Not controlled
Overall length exceeding 12.5 m
Minimum 3 axles
Interaxle Spacings
Minimum 3 m
4-B
Intercity Bus or Recreational Vehicle
Mass Limits
Mass
Limit
Axle Mass Limits
Steering axle
Maximum 7 250 kg1
Single axle
Maximum 9 100 kg2
Tandem axle (4 tires per axle)
Maximum 18 000 kg
Gross Vehicle Mass Limits
Two axles (4 tires)
Maximum 13 250 kg
Two axles (6 tires)
Maximum 16 350 kg
Three axles (8 tires) (with two axle groups)
Maximum 22 350 kg
Three axles (10 tires)
Maximum 25 250 kg
1See paragraph 7(1)(c) and subsections 7(2), (3), (4) and 8(1).
2See subsection 7(6).
5-A
Intercity Bus or Recreational Vehicle and Pony Trailer
Dimension Limits
Dimension
Limit
Overall Length
Maximum 20 m
Overall Width
Maximum 2.6 m
Overall Height
Maximum 4.15 m
Intercity Bus or Recreational Vehicle:
Overall length
Maximum 14 m
Wheelbase
Not controlled
Tandem axle spread
Minimum 1.2 m / Maximum 1.85 m
Effective rear overhang
Maximum 4 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
5-B
Intercity Bus or Recreational Vehicle and Pony Trailer
Mass Limits
Mass
Limit
Axle Mass Limits
Intercity Bus or Recreational Vehicle: 
Steering axle
Maximum 7 250 kg1
Single axle
Maximum 9 100 kg2
Tandem axle (4 tires per axle)
Maximum 18 000 kg
Trailer: 
Single axle (2 or 4 tires per axle)
Maximum 6 000 kg
Tandem axle (2 or 4 tires per axle)
Maximum 6 000 kg
Gross Vehicle Mass Limits
Intercity Bus or Recreational Vehicle with Pony Trailer3
Two axles (4 tires)
Maximum 19 250 kg
Two axles (6 tires)
Maximum 22 350 kg
Three axles (8 tires)
Maximum 28 350 kg
Three axles (10 tires)
Maximum 31 250 kg
1See paragraph 7(1)(c) and subsections 7(2), (3), (4) and 8(1).
2See subsection 7(6).
3Requirements for Intercity Bus with Trailer
• restricted to use of trailers with a maximum GVW of 6 000 kg.
• trailer must be fitted with adequate hitch connection and braking system.
6-A
“Stinger Steer” Automobile or Boat Carrier
Dimension Limits
Dimension
Limit
Overall Length
- without load
Maximum 23 m
- with load
Maximum 25 m
Overall Width
Maximum 2.6 m
Overall Height
Maximum 4.3 m
Truck
Overall length
Maximum 12.5 m
Wheelbase
Not controlled
Tandem axle spread
Minimum 1.2 m / Maximum 1.85 m
Fifth wheel offset (behind centre of drive axle or axle group)
Not controlled
Load overhang at front of tractor (beyond tractor bumper)
Maximum 1 m
Effective Rear Overhang
- without load
Maximum 4 m
- with load
Maximum 4.6 m
Semi-trailer
Length
Maximum 14.65 m
Wheelbase
Minimum 6.25 m / Maximum 12.5 m
Effective rear overhang (excluding load overhang)
Maximum 4 m or 42% of wheelbase, whichever is greater
Load overhang at rear of semi-trailer
Maximum 1.2 m
Tandem axle spread
Minimum 1.2 m / Maximum 1.85 m
Interaxle Spacing
Single Axle to Single or Tandem Axle
Minimum 3 m
Tandem Axle to Tandem Axle
Minimum 5 m
6-B
Stinger Steer Automobile or Boat Carrier
Mass Limits
Mass
Limit
Axle Mass Limits: 
Steering axle
Maximum 6 000 kg
Single axle
Maximum 9 100 kg1
Tandem Axle:
Axle spread 1.2 m - 1.85 m
Maximum 18 000 kg
Gross Vehicle Mass Limits2
Sum of axle masses
1See subsection 7(6).
2See subsection 8(5).
7-A
Tandem Steering Axle Truck - Full Trailer Combination
Dimension Limits
Dimension
Limit
Overall Width
Maximum 2.6 m
Overall Height
Maximum 4.15 m
Overall Length
Maximum 23 m
Box Length
Maximum 20 m
Truck
Length
Maximum 12.5 m
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 m
Hitch offset
Maximum 1.8 m
Full Trailer
Length
Maximum 12.5 m
Wheelbase
Minimum 6.25 m
Tandem axle spread
See 7-B
Track width
Minimum 2.5 m / Maximum 2.6 m
Effective rear overhang
Maximum 35% of the wheelbase
Converter Dolly
See section 12 respecting the prohibition of a double drawbar and C-dolly
Interaxle Spacings1
Tandem steering axle to tandem drive axle
Minimum 3.65 m
Single axle to single or tandem axle
Minimum 3 m
Tandem axle to tandem axle
Minimum 5 m
1See subsections 3(4) et (5).
7-B
Tandem Steering Axle Truck - Full Trailer Combination
Mass Limits
Mass
Limit
Axle Mass Limits
Tandem Steering Axle (spread 1.2 m - 2.2 m)
Maximum 16 000 kg
Tandem Axle
Axle spread less than 1.2 m
Maximum 9 100 kg
Axle spread 1.2 m to 1.85 m
Maximum 18 000 kg
Axle spread exceeding 1.85 m
Maximum 18 000 kg1
Gross Vehicle Mass Limits
Six axles
Maximum 51 000 kg
Seven axles
Maximum 53 500 kg
Eight axles
Maximum 53 500 kg
1Axle spread greater than 1.85 m not applicable to drive axle.
8-A
Tandem Steering Axle Truck - Pony Trailer Combination
Dimension Limits
Dimension
Limit
Overall Width
Maximum 2.6 m
Overall Height
Maximum 4.15 m
Overall Length
Maximum 23 m
Box Length
Maximum 20 m
Truck
Length
Maximum 12.5 m
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 m
Hitch offset
Maximum 1.8 m1
Pony Trailer2
Length
Maximum 12.5 m
Wheelbase
Minimum 6.25 m
Tandem axle spread
See 8-B
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 m
Interaxle Spacings3
Tandem steering axle to tandem drive axle
Minimum 3.65 m
Single axle to single, tandem or tridem axle
Minimum 3 m
Tandem axle to tandem Axle
Minimum 5 m
Tandem axle to tridem Axle
Minimum 5.5 m
1Dimension limits do not apply to pony trailers with a gross vehicle mass rating less than 10 000 kg or when the truck is not attached to a pony trailer.
2Dimension limits do not apply to pony trailers with a gross vehicle mass rating less than 10 000 kg
3See subsections 3(4) and (5).
8-B
Tandem Steering Axle Truck - Pony Trailer Combination
Mass Limits
Mass
Limit
Axle Mass Limits
Truck
Tandem Steering Axle
Axle spread 1.2 m to 2.2 m
Maximum 16 000 kg
Tandem Drive Axle
Axle spread less than 1.2 m
Maximum 9 100 kg
Axle spread 1.2 m to 1.85 m
Maximum 18  000 kg
Axle spread exceeding 1.85 m
Maximum 18 000 kg
Pony Trailer
Single Axle
Maximum 9 100 kg1
Tandem Axle
Axle spread less than 1.2 m
Maximum 9 100 kg
Axle spread 1.2 m to 1.85 m
Maximum 18 000 kg
Axle spread exceeding 1.85 m
Maximum 18 000 kg
Tridem Axle
Axle spread 2.4 m to 3.7 m
Maximum 21 000 kg
Gross Vehicle Mass Limits
Five axles
Maximum 43 100 kg
Six axles
Maximum 50 000 kg
Seven axles
Maximum 53 500 kg
1See subsection 7(6).
9-A
Tridem Drive Truck Tractor Semi-trailer
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 / Maximum 6.8 m
Tridem drive axle spread1
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 m
Kingpin setback
Maximum 2 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: with dual tires
Minimum 2.5 m / Maximum 2.6 m
Interaxle Spacings
Single axle to tridem axle
Minimum 3 m
Tandem axle to tridem axle
Minimum 5.5 m
Tridem axle to tridem axle
Minimum 6 m
1Each axle of the tridem drive axle group must transmit tractive power to its wheels.
9-B
Tridem Drive Truck Tractor Semi-trailer
Mass Limits
Mass
Limit
Axle Mass Limits: 
Steering Axle
Maximum 7 300 kg1
Single Axle
Maximum 9 100 kg2
Tandem Axle: 
Axle spread 1.2 m to 1.85 m
Maximum 18 000 kg
Tridem Axle: 
Drive axle spread 2.4 m to 2.8 m
Maximum 21 000 kg
Semi-trailer axle spread 2.4 m to less than 3 m
Maximum 21 000 kg
Semi-trailer axle spread 3 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 Mass Limits3
Single axle semi-trailer
Maximum 37 400 kg
Tandem semi-trailer
Maximum 45 300 kg
Tridem semi-trailer
Axle spread 2.4 m to less than 3 m
Maximum 49 300 kg
Axle spread 3 m to less than 3.6 m
Maximum 51 300 kg
Axle spread 3.6 m to 3.7 m
Maximum 54 300 kg
1Steering axle mass shall be at least 27% of the mass carried by the tractor drive tridem axle group.
2See subsection 7(6).
3See subsection 8(5).
10-A
Truck
Dimension Limits
Dimension
Limit
Overall Width
Maximum 2.6 m
Overall Height
Maximum 4.15 m
Overall Length
Maximum 12.5 m
Box Length
Not controlled
Tridem axle spread
See 10-B
Effective rear overhang
Maximum 4 m
Interaxle Spacings1
Single axle to single or tandem axle
Minimum 3 m
Tandem steering axle to tandem axle
Minimum 3.65 m
1See subsections 3(4) and (5).
10-B
Truck
Mass Limits
Mass
Limit
Axle Mass Limits
Steering Axle
Single axle
Maximum 8 000 kg1
Tandem axle (spread 1.2 m to 2.2 m)
Maximum 16 000 kg
Single Axle
Maximum 9 100 kg2
Tandem Axle
Axle spread less than 1.2 m
Maximum 9 100 kg
Axle spread 1.2 m to 1.85 m
Maximum 18 000 kg
Axle spread exceeding 1.85 m
Maximum 18 000 kg
Gross Vehicle Mass Limits
Two axles
Maximum 17 100 kg
Three axles
Maximum 26 000 kg
Four axles
Maximum 34 000 kg
1See paragraph 7(1)(b) and subsections 7(2), (3), (4) and 8(1).
2See subsection 7(6).
11-A
Truck - Full Trailer Combination
Dimension limits
Dimension
Limit
Overall Width
Maximum 2.6 m
Overall Height
Maximum 4.15 m
Overall Length
Maximum 23 m
Box Length
Maximum 20 m
Truck
Length
Maximum 12.5 m
Tandem axle spread
See 11-B
Effective rear overhang
Maximum 4 m
Hitch offset
Maximum 1.8 m
Full Trailer
Length
Maximum 12.5 m
Wheelbase
Minimum 6.25 m
Tandem axle spread
See 11-B
Track width
Minimum 2.5 m / Maximum 2.6 m 
Effective rear overhang
Maximum 35% of wheelbase
Converter Dolly
See section 12 respecting the prohibition of a double drawbar and C-dolly
Interaxle Spacing1
Single axle to single or tandem axle
Minimum 3 m
Tandem axle to tandem axle
Minimum 5 m
1See subsections 3(4) and (5).
11-B
Truck - Full Trailer Combination
Mass Limits
Mass
Limit
Axle Mass Limits
Steering Axle
Maximum 8 000 kg1
Single Axle
Maximum 9 100 kg2
Tandem Axle
Axle spread less than 1.2 m
Maximum 9 100 kg
Axle spread 1.2 m to 1.85 m
Maximum 18 000 kg
Axle spread exceeding 1.85 m
Maximum 18 000 kg
Mass Limitation3
Sum of axle masses 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 Mass Limits
Four axles
Maximum 34 100 kg
Five axles
Maximum 43 000 kg
Six axles
Maximum 50 000 kg
Seven axles
Maximum 53 500 kg
1See paragraph 7(1)(b) and subsections 7(2), (3), (4) and 8(1).
2See subsection 7(6).
3See subsection 7(7.1).
12-A
Truck – Pony Trailer Combination
Dimension Limits
Dimension
Limit
Overall Width
Maximum 2.6 m
Overall Height
Maximum 4.15 m
Overall Length
Maximum 23 m
Box Length
Maximum 20 m
Truck
Length
Maximum 12.5 m
Tandem axle spread
See 12-B
Effective rear overhang
Maximum 4 m
Hitch offset
Maximum 1.8 m1
Pony Trailer2
Length
Maximum 12.5 m
Wheelbase
Minimum 6.25 m
Tandem axle spread
See 12-B
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 m
Interaxle Spacings3
Single axle to single, tandem or tridem axle
Minimum 3 m
Tandem axle to tandem axle
Minimum 5 m
Tandem axle to tridem axle
Minimum 5.5 m
1Dimension limits do not apply to pony trailers with a gross vehicle mass rating less than 10 000 kg or when the truck is not attached to a pony trailer.
2Dimension limits do not apply to pony trailers with a gross vehicle mass rating less than 10 000 kg.
3See subsections 3(4) and (5).
12-B
Truck – Pony Trailer Combination
Mass Limits
Mass
Limit
Axle Mass Limits
Steering Axle
Maximum 8 000 kg1
Single Axle
Maximum 9 100 kg2
Tandem Axle
Axle spread less than 1.2 m
Maximum 9 100 kg
Axle spread 1.2 m to 1.85 m
Maximum 18 000 kg
Axle spread exceeding 1.85 m
Maximum 18 000 kg
Tridem Axle
Axle spread 2.4 m to 3.7 m
Maximum 21 000 kg
Gross Vehicle Mass Limits
Three axles
Maximum 26 200 kg
Four axles
Maximum 35 100 kg
Five axles
Maximum 44 000 kg
Six axles
Maximum 47 000 kg
1See paragraph 7(1)(b) and subsections 7(2), (3), (4) and 8(1).
2See subsection 7(6).
13-A
Truck Tractor and Quadrem Axle Semi-trailer
Dimension Limits
Dimension
Limit
Overall Height
Maximum 4.15 m
Overall Width
Maximum 2.6 m
Overall Length
Maximum 23 m
Truck Tractor
Wheelbase
Maximum 6.2 m
Tandem Axle Spread
Minimum 1.2 m / Maximum 1.85 m1
Semi-trailer
Length
Maximum 16.2 m
Wheelbase
Minimum 6.25 m / Maximum 12.5 m
Tridem axle spread
Minimum 3 m / Maximum 3.7 m2
Quadrem axle spread
Minimum 5.5 m3
Track width (tridem axle)
Minimum 2.5 m / Maximum 2.6 m
Kingpin setback
Maximum 2 m radius
Effective rear overhang
Maximum 35% of wheelbase
Interaxle Spacing4
Single axle to tandem axle
Minimum 3 m
Tandem axle to quadrem axle
Minimum 5.5 m
Tandem axle to quadrem axle when a semi-trailer is transporting longitudinally loaded logs, wood chips or forest by-products and has a mass greater than 28 000 kg:
Tridem axle spread 3 m to less than 3.6 m
Minimum 6 m
Tridem axle spread 3.6 m to 3.7 m
Minimum 5.5 m
Fourth axle to tridem axle (semi-trailer)
Minimum 2.5 m5
1See paragraph 7(5)(a).
2See subsection 12.1(2).
3See paragraph 12.1(1)(c) subparagraph 12.1(1)(d)(iv).
4See subsection 3(4).
5See subparagraph 12.1(1)(d)(iii).
13-B
Truck Tractor and Quadrem Axle Semi-trailer
Mass Limits
Mass
Limit
Axle Mass Limits: 
Steering Axle
Maximum 5 500 kg1
Single Axle(4 tires per axle)
Maximum 9 100 kg3
Tandem Axle
Maximum 18 000 kg2,3
Quadrem Axle
General freight
Maximum 26 000 kg
Raw forest products
Maximum 28 000 kg
Mass of the quadrem axle when a semi-trailer is transporting longitudinally loaded logs, wood chips or forest by-products and has a mass greater than 28 000 kg, or is transporting dry bulk products or liquid bulk products and has a mass greater than 26 000 kg
Tridem axle spread 3 m to less than 3.6 m
Maximum 30 500 kg4, 5
Tridem axle spread 3.6 m to 3.7 m
Maximum 32 000 kg4, 5
Self-Steering Axle Equipped with Single Tires
Tire width 365 mm minimum to less than 445 mm
6 000 kg
Tire width 445 mm or greater
6 160 kg3,6 / 7 700 kg3,5
Gross Vehicle Mass Limit8
General Freight
Maximum 49 500 kg
Raw Forest Products
Maximum 51 500 kg
When a semi-trailer is transporting longitudinally loaded logs, wood chips or forest by-products has a mass greater than 28 000 kg, or is transporting dry bulk products or liquid bulk products:
Tridem axle spread 3 m to less than 3.6 m
Maximum 54 000 kg7
Tridem axle spread 3.6 m to 3.7 m
Maximum 55 500 kg7
1See paragraph 7(1)(a) and subsections 7(2), (3), (4) and 8(1).
2Axle spread greater than 1.85 m not applicable to drive axle.
3See subsection 7(6).
4See subparagraph 12.1(1)(e)(i).
5On highways set out in Parts III and IV of Schedule B.
6On highways set out in Parts I and II of Schedule B.
7See subparagraph 12.1(1)(e)(ii).
8See subsection 8(5).
14-A
Truck Tractor and Semi-trailer
Dimension Limits
Dimension
Limit
Overall Height
Maximum 4.15 m
Overall Width
Maximum 2.6 m
Overall Length
Maximum 23 m
Truck Tractor
Wheelbase
Maximum 6.2 m
Tandem axle spread
Minimum 1.2 m / Maximum 1.85 m1
Semi-Trailer
Length
Maximum 16.2 m
Wheelbase
Minimum 6.25 m / Maximum 12.5 m
Kingpin setback
Maximum 2 m radius
Effective rear overhang
Maximum 35% of wheelbase
Tandem axle spread
See 14-B
Tridem axle spread
Minimum 2.4 m / Maximum 3.7 m2
Triaxle spread
Minimum 2.4 m / Maximum 4.8 m2
Track width
Minimum 2.5 m / Maximum 2.6 m
Interaxle Spacings3
Single axle to single, tandem or tridem axle or triaxle
Minimum 3 m
Tandem axle to tandem axle
Minimum 5 m
Tandem axle to tridem axle or triaxle
Minimum 5.5 mSingle axle to single, tandem or tridem axle or triaxle
1See paragraph 7(5)(a).
2See paragraph 7(5)(e).
3See subsections 3(4) and (5).
14-B
Truck Tractor and Semi-trailer
Mass Limits
Mass
Limit
Axle Mass Limits
Steering Axle
Maximum 5 500 kg1
Single Axle
Maximum 9 100 kg2
Tandem Axle
Axle spread less than 1.2 m
Maximum 9 100 kg
Axle spread 1.2 m to 1.85 m
Maximum 18 000 kg
Axle spread exceeding 1.85 m 3
Maximum 18 000 kg
Tridem Axle
Axle spread less than 2.4 m
Maximum 18 000 kg
Axle spread 2.4 m to less than 3 m
Maximum 21 000 kg
Axle spread 3 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 exceeding 3.7 m
Maximum 18 000 kg
Triaxle
Axle spread 2.4 m to 4.8 m
Maximum 18 000 kg4
Gross Vehicle Mass Limits5,6
Three Axles
Maximum 23 700 kg
Four Axles
Maximum 32 600 kg
Five Axles
Maximum 41 500 kg
Six Axles on Tridem or Tridem Equivalent Axle
Axle spread 2.4 m to less than 3 m
Maximum 44 500 kg
Axle spread 3 m to less than 3.6 m
Maximum 47 500 kg
Axle spread 3.6 m to 3.7 m
Maximum 49 500  kg
Axle spread exceeding 3.7 m
Maximum 41 500 kg
Six Axles on Triaxle
Maximum 41 500 kg5
1See paragraph 7(1)(a) and subsections 7(2), (3), (4) and 8(1).
2See subsection 7(6).
3Axle spread greater than 1.85 m not applicable to drive axle.
4See paragraph 7(5)(e).
5See subsection 8(3).
6See subsection 8(5).