C-24.2, r. 31 - Vehicle Load and Size Limits Regulation

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10. The maximum width, load included, of a road vehicle is 2.6 m for a motor vehicle and 2.5 m for a trailer or semi-trailer.
The width of 2.5 m referred to in the first paragraph is increased to 2.6 m where the track width of each axle of the vehicle is 2.5 m or more. The track width is the overall length of an axle, including the wheels, measured from the tire side wall to any point above the lowest point of the rim.
The track width provided for in the second paragraph is reduced to 2.45 m in the case of an axle equipped with 2 wide-tread tires and whose load maximum does not exceed the load indicated on the additional label affixed to the vehicle in accordance with the Motor Vehicle Safety Act (S.C. 1993, c. 16).
Despite the first paragraph, the maximum width of a farm trailer owned by a farmer is 2.6 m and, for a trailer carrying grains and travelling unloaded, 3.75 m.
The first paragraph does not apply to the following road vehicles, owned by a farmer, when they travel elsewhere than on an autoroute and have a width of not more than 7.5 m:
(1)  farm machines transporting products to be sprayed or travelling unloaded;
(2)  seeders; and
(3)  combine harvesters.
O.C. 1299-91, s. 10; O.C. 1412-98, s. 9; O.C. 995-2010, s. 1; O.C. 24-2013, s. 7.
10. The maximum width of any single unit road vehicle, any towing vehicle and any tractor, load included, shall be 2.6 m. That of any farm trailer, load included, owned by a farmer shall be 2.6 m and that of any other trailer or semi-trailer, load included, shall be 2.5 m.
The dimension of 2.5 m covered by the first paragraph shall be increased to 2.6 m where the length of each axle, including tires, under a semi-trailer or trailer is 2.5 m or more. That dimension shall be increased to 3.75 m in the case of a trailer carrying grains and travelling unloaded.
The first paragraph does not apply to the following road vehicles owned by a farmer, when they travel elsewhere than on an autoroute:
(1)  farm machines transporting products to be sprayed or travelling unloaded;
(2)  seeders and combine harvesters;
(3)  (subparagraph revoked).
O.C. 1299-91, s. 10; O.C. 1412-98, s. 9; O.C. 995-2010, s. 1.