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Legal size and weight limits - Manitoba

RegSenseManitobaFleet SafetyState InfoWeights and dimensionsBest ResultsFocus AreaEnglishSize and Weight LimitsTransportation

R.T.A.C. Vehicles

Width:2.60 m(Splashguards, load-securing devices, load-covering devices, ladders, placards, or clearance lamps can extend up to 10 cm on each side past the legal width and mirrors may extend up to 30 cm on each side past the legal width)
2.10 m (passenger vehicles)
Height:4.15 m(13 ft 6 in.)
Length:
Straight Truck12.5 m(41 ft)
Buses
(one articulation point)14.0 m(46 ft)
(two articulation points)20.0 m(65 ft 7 in.)
Truck/Pony Trailer23 m(75 ft 6 in.)
Truck/Full Trailer23 m(75 ft 6 in.)
Tractor-Semitrailer combination23 m(75 ft 6 in.)
A- and C-Trains25 m(82 ft)
B-Trains27.5 m(90 ft)
Trailers of A-, B-, and C-Trains20 m(box length including load)
Pony or full trailer12.5 m(41 ft)
Other Restrictions:
  • Truck tractor wheelbase is not to exceed 6.2 m (with single or tandem drives).
  • Truck tractor and single semitrailer: wheelbase of semitrailer not less than 6.25 m, and not more than 12.5 m if each is equipped with a tandem or tridem axle.
  • A- and C-trains: wheelbase of lead semitrailer or the following full trailer, not less than 6.25 m.
  • B-train: wheelbase of semitrailer, minimum of 6.25 m and maximum of 12.5 m; the sum of the two semitrailer wheelbases is not to exceed 17 m.
  • Full Trailer: Wheelbase must be at least 6.5 metres.
  • Pony Trailer: wheelbase must be at least 6.5 metres when connected by fifth wheel coupler; or at least 8.5 metres if connected by a hitching device other than a fifth wheel.
  • No part of the vehicle or combination, or its equipment or load, may project more than 1.0 m beyond the front wheels (or front bumper, if equipped with a bumper).
  • If part of the vehicle or combination, or its equipment or load, extends more than 1.0 m beyond the rear of the vehicle or combination, the projection must be marked with a red flag 30 cm square during daytime hours, or with a red light or reflector during darkness.
  • In determining the overall length of a vehicle, an aerodynamic device is not to be included in the vehicle’s length as long as no portion of the device that is higher than 1.9 m above the ground extends more than 1.52 m beyond the rear of the vehicle, and no portion of the device that is 1.9 m above the ground or lower extends beyond transverse plane (A) beginning at the rear bottom edge of the rear impact guard (if the vehicle is so equipped) or the lowest point of the rearmost part of the vehicle, and (B) extending rearwards and upwards from that edge or point and intersecting a point that is 1.74 m above the ground and 1.21 m behind the rear of the vehicle, the device is collapsible, and when fully collapsed, no portion of the device extends more than 0.305 m beyond the rear of the vehicle. An auxiliary device designed to reduce the impact of wildlife collisions that is mounted on front of a truck or truck tractor is not to be included in determining the vehicle’s length as long as no part of the device extends more than 30 cm beyond the front of the vehicle (not allowed on B-Trains).

Maximum Weights for Classes of Highways - Non-RTAC Vehicles

Axles/VehiclesWeight Limits
Steering axle, truck-tractor6,000 kg, all highways
Steering axle, truck-tractor equipped with tridem-drive axle group 7,300 kg, all highways
Steering axle, truck other than truck tractor7,300 kg, all highways
Single axle, not fitted with wide-base single tires9,100 kg, A1 and A highways
8,200 kg, B1, B, and C highways
Single axle, fitted with wide-base single tires7,700 kg, A1, A, and B1 highways
6,000 kg, B and C highways
Axle group, fitted with tires other than wide-base single tires16,000 kg, A1 and A highways
14,500 kg, B1 and B highways
8,200 kg, C highways
Axle group, fitted with wide-base single tires15,200 kg, A1 and A highways
13,800 kg, B1 highways
12,000 kg, B highways
6,000 kg, C highways
Gross vehicle weight56,500 kg, A1 highways
36,500 kg, A highways
47,630 kg, B1 highways
20,000 kg, B highways
12,700 kg, C highways

Maximum Permissible Weights for Classes of Highways - RTAC Vehicles

Axles/Vehicles*Weight Limits**
Steering axle, truck-tractor6,000 kg, all highways
Steering axle, truck-tractor equipped with tridem-drive axle group 7,300 kg, all highways
Steering axle, truck other than truck-tractor7,300 kg, all highways
Steering axle, truck equipped with tandem steering axle13,600 kg, RTAC, A1, and A highways
11,000 kg, B1 highways
7,300 kg, B and C highways
Single axle9,100 kg, RTAC, A1, and A highways
8,200 kg, B1, B, and C highways
Single axle, fitted with wide-base tires7,700 kg, A1, A, B1 highways
6,000 kg, B and C highways
Tandem axle17,000 kg, RTAC
16,000 kg, A1 and A highways
14,500 kg, B1 and B highways
8,200 kg, C highways
Tridem axle, 2.4 m or more to < 3.0 m21,000 kg, RTAC and A1 highways
16,000 kg, A highways
20,000 kg, B1 highways
14,500 kg, B highways
8,200 kg, C highways
Tridem axle, 3.0 m or more to < 3.6 m23,000 kg, RTAC and A1 highways
16,000 kg, A highways
20,000 kg, B1 highways
14,500 kg, B highways
8,200 kg, C highways
Tridem axle, 3.6 m or more to 3.7 m24,000 kg, RTAC highways
23,000 kg, A1 highways
16,000 kg, A highways
20,000 kg, B1 highways
14,500 kg, B highways
8,200 kg, C highways
Gross vehicle weight62,500 kg, RTAC routes
56,500 kg, A1 routes
36,500 kg, A routes
47,630 kg, B1 routes
20,000 kg, B routes
12,700 kg, C routes
*Axle groups not equipped with wide-based tires.
**The maximum gross axle weights for B-trains on RTAC routes and portions of certain RTAC routes are as follows:
  • 6,000 kg for the steering axle;
  • 9,100 kg for a single axle;
  • 17,000 kg for a tandem axle;
  • 21,000 kg for a tridem on the rear of the first semi-trailer with an axle spread of 2.4 m to < 3.0 m;
  • 24,000 kg for a tridem on the rear of the first semi-trailer with an axle spread of 3.0 m to 3.1 m; and
  • 63,500 kg gross vehicle weight.

Maximum Permissible Weights for Classes of Highways - RTAC Vehicles

Axles/Vehicles*Weight Limits**
Single axle9,100 kg, RTAC
7,700 kg, A1, A, and B1 highways
6,000 kg, B and C highways
Tandem axle17,000 kg, RTAC
15,200 kg, A1 and A highways
13,800 kg, B1 highways
12,000 kg, B highways
8,200 kg, C highways
Tridem axle, 2.4 m or more to < 3.0 m21,000 kg, RTAC
20,000 kg, A1 highways
16,000 kg, A highways
19,000 kg, B1 highways
14,500 kg, B highways
8,200 kg, C highways
Tridem axle, 3.0 m or more to < 3.6 m23,000 kg, RTAC
22,000 kg, A1 highways
16,000 kg, A highways
19,000 kg, B1 highways
14,500 kg, B highways
8,200 kg, C highways
Tridem axle, 3.6 m or more to 3.7 m24,000 kg, RTAC
22,000 kg, A1 highways
16,000 kg, A highways
19,000 kg, B1 highways
14,500 kg, B highways
8,200 kg, C highways
Gross vehicle weight62,500 kg, RTAC routes
56,500 kg, A1 routes
36,500 kg, A routes
47,630 kg, B1 routes
20,000 kg, B routes
12,700 kg, C routes
*Axle groups equipped with wide-based tires.
**The maximum gross axle weights for B-trains on RTAC routes and portions of certain RTAC routes are as follows:
  • 6,000 kg for the steering axle;
  • 9,100 kg for a single axle;
  • 17,000 kg for a tandem axle;
  • 21,000 kg for a tridem on the rear of the first semi-trailer with an axle spread of 2.4 m to < 3.0 m;
  • 24,000 kg for a tridem on the rear of the first semi-trailer with an axle spread of 3.0 m to 3.1 m; and
  • 63,500 kg gross vehicle weight.

Note: Changes to the Highway Traffic Act and its associated regulations have resulted in improved uniformity in weight and dimension regulations for vehicles operating between provinces and within the Province of Manitoba. More stable types of vehicles such as C-Trains, Pony Trailers and truck and full trailer combinations will be allowed to haul increased weights on designated highways known as RTAC routes.

As well, additional full time RTAC routes and seasonal (December 1 to February 28) RTAC routes have been approved. Certain B1 highways will be allowed higher seasonal loading capacities.

Manitoba’s complete Vehicle Weights and Dimensions on Classes of Highways Regulation can be found by visiting http://tinyurl.com/MBsize-weight.

Further information may be obtained by calling the Manitoba Department of Transportation and Government Services at (204) 945-3961.

Frost laws

More details on Manitoba’s Spring Road Restriction Program can be found at www.gov.mb.ca/mit/srr/index.html.

View agency contacts

['Size and Weight Limits']
['Weights and dimensions']
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