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Like most Canadian transportation regulations, the commercial vehicle size and weight limits are enforced at the jurisdictional level. In order to create uniformity in vehicle dimensions and weights throughout Canada, the Canadian jurisdictions agreed to a “Memorandum of Understanding” (MOU) on vehicle size and weights. A task force within the Council, the Task Force on Vehicle Weights and Dimensions Policy, periodically meets to discuss possible areas for improvement and to decide on updates to the MOU, if warranted.
Created by the Council of Ministers of Transportation and Highway Safety, the MOU establishes standard height, width, length, and weight limits for eight common vehicle configurations.
The MOU establishes the following size and weight limitations:
Height, including load | 4.15 m | |
Width, including load but excluding mirrors, lamps, and load covering or securing devices | 2.6 m | |
Length, including load | Category 1: Tractor-semitrailer | 23 m |
Category 1A: Tridem Drive Tractor Semitrailer | 23.5 m | |
Category 2: A-Train Double | 25 m | |
Category 3: B-Train Double | 27.5 m | |
Category 4: C-Train Double | 25 m | |
Category 5: Straight Truck | 12.5 m | |
Category 6: Truck-Pony Trailer | 23 m | |
Category 7: Truck-Full Trailer | 23 m | |
Category 8: Intercity Bus and Recreational Vehicle | 14 m | |
Weight | ||
Tractor-semitrailer | 46,500 kg | |
Tridem Drive Tractor Semitrailer | 52,300 kg | |
A-Train Double | 53,500 kg | |
B-Train Double | 62,500 kg | |
C-Train Double | 58,500 kg | |
Straight Truck | 24,250 kg | |
Truck-Pony Trailer | 45,250 kg | |
Truck-Full Trailer | 53,500 kg | |
Intercity Bus and Recreational Vehicle | 24,250 kg |
Liftable axles are generally prohibited; however some jurisdictions may recognize them.
Even though the MOU is in place, the jurisdiction may adopt less-restrictive size and weight limits for roads within the jurisdiction. Refer to the individual jurisdictions' size and weight regulations for more information.