Legal vehicle weights in Ontario
Ordinary legal limits on gross, axle, axle-group, wheel, and tire loading, including limits determined by axle configuration or spacing.
12 facts, each with the passage it comes from, quoted from 2 official sources.
Where to apply
Where an application for Legal vehicle weights is submitted in Ontario.
Phone · Ministère des Transports
Bureau de délivrance de permis, par téléphone
Contact the permit issuing office during business hours if the route indicated on your permit needs to be changed.
Phone · Ministère des Transports
Bureau de délivrance de permis, par téléphone (sans frais)
Contact the permit issuing office during business hours if the route indicated on your permit needs to be changed.
Mail · Ontario Ministry of Transportation (MTO) Permit Issuing Office
Permit Issuing Office, by mail
301 St. Paul Street, 3rd Floor, St Catharines, Ontario, L2R 7R4
Application forms must be completed in full. Incomplete applications will be returned.
In person · Ontario Ministry of Transportation (MTO) Permit Issuing Office
Permit Issuing Office
301 St. Paul Street, 3rd Floor, St Catharines, Ontario, L2R 7R4
Email · Ministry of Transportation
Oversize/Overweight Permit Office, by email
Use it when: For Permitting and Registration for International Registration Plan and Oversize/Overweight (PRIO) online permitting system account set up, tow truck certificate applications, special vehicle configuration permits or project permits
Fax · Ministry of Transportation
Highway Operations Permits Office, by fax
905-704-2545
Use it when: Until January 1, 2026
Download and complete an application form. Include payment (Canadian funds only) by visa or Mastercard using an authorization form, cheque made out to the Ministry of Finance, bank draft, money order or certified cheque made out to the Ministry of Finance.
Start with a question
Open a question to read the facts on file that bear on it.
What legal limits apply to single axles, tandem axles, and larger axle groups at each spacing?Nothing on file for Ontario answers this yet.
How do wheel and tire specifications affect legal weight limits?Nothing on file for Ontario answers this yet.
How does insufficient axle spacing reduce an applicable weight limit?Nothing on file for Ontario answers this yet.
Facts
1 topic
Maximum gross vehicle weight (Measures)
Maximum legal gross weight of a vehicle or combination, in kilograms.
- 63,500 kg139,993 lbAnnual permit, combination vehicles
- 63,500 kg139,993 lbCongested traffic condition
- 120,000 kg264,554 lbExtraordinary load
- 63,500 kg139,993 lbFriday summer restrictions exception
Where these facts come from
- Guide to oversize/overweight vehicles and loads(opens in a new tab)
www.ontario.ca, web page, 9 facts
- Guide sur les véhicules et charges de dimensions/poids exceptionnels(opens in a new tab)
www.ontario.ca, web page, 3 facts