What Lettering Does Ontario Require on Commercial Trucks?
The Ontario Ministry of Transportation (MTO) requires three categories of information on every commercial motor vehicle operating under a CVOR in the province. These requirements are found in the Highway Traffic Act, R.S.O. 1990, c. H.8 and Ontario Regulation 424/97.
During roadside inspections, MTO enforcement officers check all three categories. Missing or non-compliant lettering in any category can result in a citation, points on your CVOR abstract, and even an out-of-service order.
The Three Required Elements
Every Ontario commercial vehicle operating under a CVOR must display all three of these on both sides of the power unit:
Required Truck Door Markings
Regulation Reference
Ontario.ca — Commercial Vehicle Operators Registration | Highway Traffic Act, Section 16; O.Reg 424/97
Detailed Lettering Specifications
These specifications apply to all three required elements (CVOR, owner name, GVW):
MTO Lettering Specifications
Typical Truck Door Layout
While MTO does not dictate the exact layout, the industry standard for truck door lettering in Ontario follows this hierarchy:
Top: Company Name
The registered owner name is typically placed at the top of the door in the largest text. This is both a legal requirement and a branding opportunity.
Middle: City / Province
While not strictly required by MTO, most carriers include their city and province. This is required if you also operate in the US (FMCSA 49 CFR 390.21).
Bottom Left: CVOR Number
The CVOR number is typically placed on the lower portion of the door, preceded by "CVOR" or "CVOR No." for clarity.
Bottom Right: GVW
The gross vehicle weight in kilograms, preceded by "GVW" or "Gross Vehicle Weight." Example: GVW 18,144 kg
Complete MTO Lettering Checklist
Use this checklist before every trip and after any vehicle changes:
- CVOR number displayed on BOTH sides of the power unit
- CVOR number matches the number on your current CVOR certificate
- Registered owner name displayed on BOTH sides
- Owner name matches the legal name on the CVOR certificate exactly
- GVW displayed on BOTH sides in kilograms (not pounds)
- GVW matches the registered gross weight on file with MTO
- ALL lettering is minimum 50mm (2") in height
- ALL lettering is in a contrasting colour to the vehicle
- ALL lettering is clearly legible (not faded, peeling, or obscured)
- Lettering is permanent (NOT magnetic signs)
- No obstructions blocking the lettering (tarps, equipment, dirt)
- If cross-border: USDOT number also displayed per FMCSA requirements
CVOR Door Lettering Kit
From $49.99 CAD — Ships same day
Frequently Asked Questions
What are the fines for improper truck lettering in Ontario?
Fines for non-compliant commercial vehicle lettering range from $200 to $2,000 per offence under the Highway Traffic Act. Each missing or incorrect element (CVOR, name, GVW) is a separate offence. Additionally, violations add points to your CVOR abstract.
Can I use magnetic signs for my truck lettering?
No. The MTO requires permanent lettering on commercial vehicles. Magnetic signs are explicitly not acceptable and will result in a violation during a roadside inspection.
Do I need lettering on my trailer?
In Ontario, CVOR, owner name, and GVW markings are required on the power unit (tractor/truck) only, not on trailers. However, if you operate in the US, FMCSA may require markings on trailers as well.
What if my company name changed but I have the same CVOR?
If your legal name has changed, you must update both your CVOR certificate with the MTO and the lettering on your vehicles. The name displayed must match the name on your current CVOR certificate.
Can I order all three required decals as one kit?
Yes. We offer complete MTO compliance kits that include your CVOR number, company name, and GVW decals — all in the correct sizes and formats for both sides of your vehicle.
Order MTO-Compliant Truck Lettering
Complete compliance kits for Ontario commercial vehicles. CVOR, company name, and GVW decals — all validated for MTO requirements. Premium 7-year vinyl, same-day production.