Door Lettering Ontario — Commercial Vehicle
Door Lettering Ontario — Commercial Vehicle — regulation-validated, made in Niagara. Fast turnaround on 5+ year outdoor vinyl, shipped nationwide.
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We confirm your text and layout before cutting. No payment until you approve your proof.
Ontario's Highway Traffic Act requires commercial vehicles over 4,500 kg GVW to display the operator's name and CVOR number on both sides of the vehicle in characters at least 50 mm (2 inches) high per O.Reg 424/97 s.10. Our door lettering kit delivers pre-cut, transfer-tape-ready vinyl sized to the published regulation — no measuring, no sign shop, no guesswork.
What's Included
- Both cab doors — driver and passenger side panels
- CVOR number + company name pre-cut to regulation height
- Optional phone number line (select CVOR + Name + Phone package)
- Transfer tape pre-applied — peel, position, squeegee, done
- Made in Canada on 5+ year outdoor cast vinyl
Regulatory Snapshot
| Specification | Requirement | Legal Reference |
|---|---|---|
| Minimum letter height | 50 mm (2 inches) | O.Reg 424/97 s.10 / NSC Standard 10 |
| Required information | Operator name + CVOR number | O.Reg 424/97 s.10(1) |
| Placement | Both sides of vehicle (both cab doors) | O.Reg 424/97 s.10(1) |
| Colour contrast | Must contrast with background | O.Reg 424/97 s.10 |
| Who must comply | Commercial vehicles over 4,500 kg GVW under CVOR | HTA s.16, O.Reg 424/97 |
Missing or non-compliant door lettering is an out-of-service defect under NSC Out-of-Service Criteria. An MTO enforcement officer at the Vineland, Fort Erie, or Port Hope scales can issue an immediate out-of-service order — your truck cannot move until corrected. Fines under the HTA range from $310 to $3,000.
Height Guide
- 50 mm (2 inch) — Legal Minimum: Meets the O.Reg 424/97 s.10 requirement. Suitable for vehicles where cab door space is limited.
- 75 mm (3 inch) — Recommended: Exceeds the legal minimum by 50%. Easier for MTO inspectors to read at a distance. Reduces risk of a re-inspection for legibility.
Installation — Under 20 Minutes
- Wipe both cab doors with isopropyl alcohol — surface must be clean and above 10°C.
- Peel the backing from the transfer tape panel.
- Align the top edge of the panel using the door seam as a guide.
- Squeegee firmly from centre outward to push out air.
- Peel transfer tape slowly at 180° — if any letter lifts, press back and squeegee again.
- Repeat on the passenger door. Both sides must show identical information.
Last verified: June 2026 | Ontario Regulation 424/97 (ontario.ca)
Frequently Asked Questions
The verified Ontario rule is to carry the CVOR certificate in the vehicle under O. Reg. 424/97. We collect operator name, unit number, vehicle details and any USDOT number so the order can be produced as fleet identification without inventing an Ontario CVOR door-marking requirement.
Regulations last verified: June 2026
Sources: HTA s. 16 · O.Reg 424/97 · O.Reg 413/05 · 49 CFR 390.21
Checked quarterly against latest Transport Canada and MTO updates.
Applicable Regulations
Ontario CVOR certificate must be carried in the cab. Exterior CVOR references are professional fleet ID; US-bound USDOT markings are governed by FMCSA 49 CFR 390.21.
Ontario CVOR operators must carry the CVOR certificate in the vehicle. This site does not treat HTA s.16 or O.Reg 424/97 as an exterior CVOR display rule.
Verified source for the Ontario CVOR certificate carry rule; no exterior CVOR marking, height, colour, or door-placement rule.
Mandates GVW rating display on commercial vehicles.
Requires USDOT number on both sides of all commercial motor vehicles operating in interstate commerce.
Free tool — verify your vinyl colour meets MTO high-contrast requirements before ordering.
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