Ontario CVOR Number Size — O.Reg 424/97 s.12
Regulation O.Reg 424/97 s.12 · Province of Ontario
§The Law
O.Reg 424/97 s.12 — Regulation O.Reg 424/97 s.12
“Ontario CVOR operators must carry the CVOR certificate in the vehicle; O.Reg 424/97 does not require exterior CVOR display. The specs below are fleet ID / USDOT (49 CFR 390.21) guidance, not an Ontario mandate.”
View official regulation text✓Plain English
Keep the CVOR certificate in the cab. Exterior CVOR references are professional fleet ID, not an Ontario display mandate. If you do letter the truck (or display USDOT for US trips), these are common specs.
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Specific Requirements
Legible from 50 feet in daylight — USDOT requirement under 49 CFR 390.21
Both sides of power unit cab (by choice / USDOT)
Contrasting colour to background
Cab door or forward panel
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📚Sources & Authority
Every claim on this page is backed by official government legislation and verified industry sources. Last verified: March 2026.
🏛 Official Government Sources
Ontario Highway Traffic Act — Commercial Vehicles
Ontario.ca · March 2026
The HTA governs all commercial vehicle requirements in Ontario including CVOR registration, vehicle markings, and weight limits.
MTO CVOR Overview — Commercial Vehicle Safety
Ontario Ministry of Transportation · March 2026
CVOR registration requirements, safety rating system, and compliance monitoring for Ontario commercial vehicle operators.
🎓 Expert & Industry Sources
All sources are official government publications or recognized industry authorities. Links verified March 2026. If you find a broken link, let us know.
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Shop Trucking ComplianceOr call (289) 228-7021Regulation Quick Facts
- Regulation
- O.Reg 424/97 s.12
- Jurisdiction
- 🏛 Province of Ontario
- Category
- Commercial Trucking Law
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Confirm the current rule before relying on a marking
Our guides are a starting point for locating government sources connected to O.Reg 424/97 s.12 markings. Requirements can depend on jurisdiction, vehicle or site details, and the date you act.
- Open the linked official source and check its current version.
- Confirm the rule applies to your exact vehicle, vessel, property, or operation.
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