Applications and amendments in Ontario
Application requirements, processing, financial security, project-mode submissions and changes to issued permits.
4 facts, each with the passage it comes from, all quoted from Guide to oversize/overweight vehicles and loads.
Where to apply
Where an application for Applications and amendments is submitted in Ontario.
Online · Ministry of Transportation
PRIO online permitting system
prio.mto.gov.on.ca (opens in a new tab)
Before you apply online for the first time, you must register to use the online services by completing a user account form and emailing it to the Ministry of Transportation’s Oversize/Overweight Permit Office at oo.permits@ontario.ca. Once your online services account has been set up, you can use it to apply for as many permits as you need.
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.
Fax · Ministère des Transports de l'Ontario (MTO)
Bureau de délivrance des permis du MTO, par télécopieur
416 235-3924
Mail · Ministère des Transports
Bureau de délivrance de permis, par la poste
301, rue St. Paul, 3e Étage, St Catharines, (Ontario) L2R 7R4
Mail · Ministry of Transportation
Highway Operations Permits Office
Ministry of Transportation Highway Operations Permits Office 301 St. Paul Street, 2nd Floor St Catharines, Ontario L2R 7R4
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.
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 · Ministère des Transports de l'Ontario (MTO)
Bureau de délivrance des permis du MTO, par courriel
Use it when: Only with a prepaid payment account with the Ministry
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.
Can an application be submitted in project mode, and for which permit classes?Nothing on file for Ontario answers this yet.
Can an issued permit be amended, and how many times?Nothing on file for Ontario answers this yet.
Facts
4 topics
Permit application requires signature (Yes or no)
Whether the permit application must be signed and dated by an authorized representative of the company.
Yes
Application processing maximum business days (Measures)
The maximum number of business days within which the government commits to process a permit application requiring in-depth analysis, provided the file is complete, accurate, and compliant.
14 days
Superload permits
Amendment allowed (Yes or no)
Whether an active permit can be amended after issuance.
Yes
Bond required (Yes or no)
Whether a surety bond or other financial security must be filed for the permit.
Yes
Where these facts come from
- Guide to oversize/overweight vehicles and loads(opens in a new tab)
www.ontario.ca, web page, 4 facts