['Size and Weight Limits']
['Weights and dimensions']
03/25/2026
...
Ontario
Highway Traffic Act
Part VIII: Weight
(1) Subject to section 110, no vehicle or combination of vehicles shall be operated on a Class A Highway where the axle unit weight on an axle unit, whether or not part of any axle group, exceeds,
(a) for a single axle with single tires, 9,000 kilograms;
(b) for a single axle with dual tires, 10,000 kilograms;
(c) for a dual axle, that weight shown in Column 2 opposite the corresponding axle spacing shown in Column 1 of Table 1; or
(d) for a triple axle, that weight shown in Column 2 opposite the corresponding axle spacing shown in Column 1 of Table 2. R.S.O. 1990, c. H.8, s. 116 (1); 2000, c. 26, Sched. O, s. 9 (1).
Other weights set by regulation
(1.1) The Lieutenant Governor in Council may make regulations prescribing axle unit weight limits other than those specified or referred to in subsection (1) for any prescribed axle unit on any prescribed class or classes of vehicle or combination of vehicles and, for that purpose, prescribing axle units and classes of vehicles and combinations of vehicles. 2000, c. 26, Sched. O, s. 9 (2).
Where weights set by regulation apply
(1.2) An axle unit weight limit prescribed under subsection (1.1) applies instead of the weights specified or referred to in subsection (1) for a prescribed axle unit on a vehicle or combination of vehicles in a class prescribed under subsection (1.1). 2000, c. 26, Sched. O, s. 9 (2).
Restriction of weights allowed under subs. (1)
(2) Despite subsection (1), the maximum allowable axle unit weight for a dual axle shall not exceed 18,000 kilograms unless the axle is equipped with dual tires. R.S.O. 1990, c. H.8, s. 116 (2).
Idem
(3) Despite subsection (1), the maximum allowable axle unit weight for a triple axle shall not exceed 27,000 kilograms unless the axle is equipped with dual tires. R.S.O. 1990, c. H.8, s. 116 (3).
Idem
(4) Despite subsection (1), the maximum allowable axle unit weight for a single front axle shall not exceed 5,000 kilograms unless the driver of a vehicle or combination of vehicles has with him or her a verification in writing as to the manufacturer's gross axle weight rating for such single front axle. R.S.O. 1990, c. H.8, s. 116 (4).
Production of verification
(5) The driver of a vehicle or combination of vehicles being operated on a Class A Highway who has the verification referred to in subsection (4) shall produce it when so demanded by a police officer or an officer appointed for carrying out the provisions of this Act, and, where it is so demanded and not produced, the driver shall be deemed to not have the verification. R.S.O. 1990, c. H.8, s. 116 (5).
Maximum allowable axle unit weight
(6) Where subsection (4) does not apply because the driver has the verification referred to in subsection (4), then subject to subsection (1), the maximum allowable axle unit weight on the single front axle shall not exceed the manufacturer's gross axle weight rating. R.S.O. 1990, c. H.8, s. 116 (6).
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© King's Printer for Ontario, 2012-2021. The text is not the official version of Ontario's Highway Traffic Act or associated regulations. For official text, refer to www.ontario.ca/laws.
['Size and Weight Limits']
['Weights and dimensions']
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