Alberta Transportation establishes maximum vehicle weight and dimension limits to preserve highway infrastructure and to ensure the safety of the travelling public. This includes legal limits for any registered vehicle for travel on any public road, as well as the provision for movement of oversize loads under permit.

Establishing maximum weight and dimension limits also:

  • ensures the safety of the traveling public
  • minimizes the inconvenience to the traveling public
  • minimizes damage to the roadway infrastructure
  • facilitates the movement of commodities which are non-divisible, deemed impractical to divide, or uneconomical to transport at legal dimensions
  • establishes and communicate to the carrier, a set of conditions for the safe movement of the load


Permits may be available for the movement of oversize and overweight vehicles and their loads. Conditions are applied that minimize infrastructure damage and enhance safety to the public.

Disclaimer: This electronic service is meant to be a simplified guide to certain parts of the acts and regulations, and not a substitute for them. Alberta Transportation, Transport Engineering Branch, is not responsible for any omissions in the following documents. It is the responsibility of the transporter to consult the regulations for the exact requirements before moving shipments.

Road bans

Toll free: 1-855-762-3226
Fax polling: 403-340-5092

Seasonal Axle Weight Program

Alberta Transportation has recently updated its seasonal axle weight program. Historically, Alberta has had heavier winter haul weights for industry when frost penetrates the ground to one metre. In winter, trucking weights can be greater because the pavement is less vulnerable when the ground beneath it is frozen, providing support. Industry relies on this seasonal axle weight increase to maximize their payloads throughout the winter.

After conducting research into the impact of frost depth on pavement integrity, Alberta Transportation has approved a new Seasonal Axle Weight Program which will set the winter weight frost depth at .75, versus one metre. This will provide significant benefit to industry allowing them to haul heavier loads for a longer period—reducing trucking trips—while still protecting our roads from damage.


Connect with the Central Permit Office:

Toll free: 1-800-662-7138
Phone: 403-342-7138
Fax: 403-340-5278
Email: central.permits@gov.ab.ca