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Quebec Vehicle load standards

Standards

Height and Width Limits

Height limits

Vehicle and combination of vehicles

Rear view of a truck illustrating the height limit

*Load included.

Width limits

Vehicle and combination of vehicles

Rear view of a truck illustrating width limits *Load included. This maximum width prescribed does not include rear-view mirrors and lights, equipment designed for road grading, clearing or marking when devices used for automatic loading of bales of hay or tie-down accessories (cables, chains, belts, straps, devices used for fastening or stowing tarpaulins, etc.) used to secure a load as long as they do not exceed 100 mm on each side of the vehicle.

The width limit is 2.6 m for vehicle and combination of vehicles.   However, this width limit is 2.5 m for trailers and semi-trailers with a track width (distance between the extremities of each outer wheel on each axle) under 2.5 m.

2-Axle Truck

Load Limits

Side view of a two-axle truck (six wheels) illustrating dimension limits

Period
Normal
Thaw
Front single axle
7 250 kg
7 250 kg
Rear single axle
10 000 kg
8 000 kg
Gross vehicle weight
17 250 kg
15 250 kg

Size

*Load included.

3-Axle Truck

Load Limits

Period
Normal
Thaw
Front single axle
7 250 kg
7 250 kg
Rear single axle
18 000 kg
15 500 kg
Gross vehicle weight
25 250 kg
22 750 kg

Side view of a three-axle truck (ten wheels) illustrating dimension limits

Size

*Load included.

4-Axle Truck

Load Limits

Period
Normal
Thaw
Front single axle
14 000 kg
14 000 kg
Rear single axle
18 000 kg
15 500 kg
Gross vehicle weight
32 000 kg
29 500 kg

Size

Side view of a four-axle truck (twelve wheels) illustrating dimension limits

*Load included.

5-Axle Tractor-Semi-trailer

Size

Side view of a five-axle tractor-semi-trailer (eighteen wheels) illustrating dimension limits

*Load included.

Load Limits

Period
Front single axle
Tandem axle
Tandem axle under semi-trailer
Gross vehicle weight
Normal

5 500 kg

18 000 kg

18 000 kg

41 500 kg

Thaw

5 500 kg

15 500 kg

15 500 kg

36 500 kg

6-Axle Tractor-Semitrailer

Size

Side view of a five-axle tractor-semitrailer (twenty-two wheels) illustrating dimension limits.

*Load included.

Load Limits

Period

Front single axle

Tandem axle

Triple axle under semitrailer**
Minimum distance "a"
Gross vehicle weight
Normal

5 500 kg

18 000 kg

21 000 kg
(2,4 m Signe de ponctuation mathematique: plus petit ou egal. c < 3,0 m)

4,0 m

44 500 kg

Normal

5 500 kg

18 000 kg

24 000 kg
(3,0 m Signe de ponctuation mathematique: plus petit ou egal. c < 3,6 m)

4,5 m

47 500 kg

Normal

5 500 kg

18 000 kg

26 000 kg
(3,6 m Signe de ponctuation mathematique: plus petit ou egal. c Signe de ponctuation mathematique: plus petit ou egal. 3,7 m)

5,5 m

49 500 kg

Thaw

5 500 kg

15 500 kg

18 000 kg
(2,4 m Signe de ponctuation mathematique: plus petit ou egal. c < 3,0 m)

not required

39 000 kg

Thaw

5 500 kg

15 500 kg

21 000 kg
(3,0 m Signe de ponctuation mathematique: plus petit ou egal. c Signe de ponctuation mathematique: plus petit ou egal. 3,6 m)

not required

42 000 kg

Thaw

5 500 kg

15 500 kg

22 000 kg
(3,6 m Signe de ponctuation mathematique: plus petit ou egal. c < 3,7 m)

not required

43 000 kg

** According to distance «c» between axles and semitrailer.

7-Axle Tractor-Semitrailer

Size

Side view of a seven-axle tractor-semitrailer (twenty-six wheels) illustrating dimension limits.

*Load included.

The 4 axles under semitrailer must be equiped with a suspension capable of equalizing the load on each axle.

Load Limits

Period

Front single axle

Tandem axle

4-axle under semitrailer**
Minimum distance "a"
Gross vehicle weight
Normal

5 500 kg

18 000 kg

32 000 kg
(3,0 m Signe de ponctuation mathematique: plus petit ou egal. c < 3,6 m)

6,0 m

55 500 kg

Normal

5 500 kg

18 000 kg

32 000 kg
(3,6 m Signe de ponctuation mathematique: plus petit ou egal. c Signe de ponctuation mathematique: plus petit ou egal. 3,7 m)

5,5 m

55 500 kg

Thaw

5 500 kg

15 500 kg

27 500 kg
(3,0 m Signe de ponctuation mathematique: plus petit ou egal. c < 3,6 m)

not required

48 500 kg

Thaw

5 500 kg

15 500 kg

27 500 kg
(3,6 m Signe de ponctuation mathematique: plus petit ou egal. c Signe de ponctuation mathematique: plus petit ou egal. 3,7 m)

not required

48 500 kg

** According to distance «c» corresponding to spacing of triple axle under semitrailer.

A Train

Size

Side view of an eight-axle A train (thirty wheels) illustrating dimension limits.

*Load included.

Load Limits

Period

Front single axle

Tandem axle

Tandem axle under front semitrailer
Dolly
Tandem axle under rear semitrailer
Gross vehicle weight
Normal

5 500 kg

18 000 kg

18 000 kg

10 000 kg

18 000 kg

53 500 kg

Thaw

5 500 kg

15 500 kg

15 500 kg

8 000 kg

15 500 kg

53 500 kg

B Train

Size

Side view of an eight-axle B train (thirty wheels) illustrating dimension limits.

*Load included.

Load Limits

Period

Front single axle

Tandem axle

Triple axle under semitrailer
Tandem axle under semitrailer
Gross vehicle weight
Normal

5 500 kg

18 000 kg

21 000 kg
spacing < 3,0 m

18 000 kg

59 000 kg**

Normal

5 500 kg

18 000 kg

24 000 kg
spacing Signe de ponctuation mathematique: plus grand ou egal. 3,0 m

18 000 kg

59 000 kg**

Thaw

5 500 kg

15 500 kg

18 000 kg
spacing < 3,0 m

15 500 kg

54 500 kg
Thaw

5 500 kg

15 500 kg

21 000 kg
spacing Signe de ponctuation mathematique: plus grand ou egal. 3,0 m

15 500 kg

57 500 kg

** This limit is extended to 62 500 kg on autoroutes and highway 185; on other roads, a special permit must be obtained and special requirements apply.




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