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Canadian supplier · Not a government agency

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●PRIVATE CANADIAN SUPPLIER
49 CFR 390.21
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Field Guide

US DOT Compliance for Canadian Carriers: FMCSA 49 CFR 390.21

US DOT Regulations for Canadian Carriers

Canadian carriers operating in the US must follow FMCSA DOT regulations. Under 49 CFR 390.21, carriers generally display their USDOT number on all commercial motor vehicles. Compliance ensures legal cross-border movement and avoids heavy fines from US Department of Transportation inspectors at the border.

✓Display USDOT number on both sides of the vehicle✓Follow FMCSA 49 CFR 390.21 for identification✓Maintain valid authority for all cross-border routes✓Fines for non-compliance can exceed $1,000 per violation
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USDOT Number Decals for Canadian Carriers
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Defining DOT Regulations for Cross-Border Transit

DOT regulations govern the safety of all commercial motor vehicles on US roads. For Canadian carriers, this includes specific identification mandates. You must clearly display your USDOT number on your power units.

These rules ensure US authorities can identify carriers during roadside inspections. We follow 49 CFR 390.21 to ensure your lettering meets federal standards. Do not guess. Use the exact number assigned to your authority.

Who Needs a USDOT Number?

Any carrier operating a vehicle in interstate commerce requires a USDOT number. This includes Canadian companies crossing the border. If your vehicle meets the weight thresholds defined in 49 CFR 391.5, you must comply.

Operating without proper identification is a direct violation. US inspectors check for legible, high-contrast lettering. We make sure your numbers are visible and compliant.

Specific Lettering Requirements

Your USDOT number should be placed on both sides of the vehicle. The lettering should be conspicuous. This means it should be easy to read from a distance. Use high-contrast colors against your truck's paint.

Avoid obscured or small fonts. We specialize in durable, regulation-compliant lettering. We know exactly what the FMCSA looks for during a border stop.

Consequences of Non-Compliance

Failure to comply with 49 CFR 390.21 leads to immediate penalties. US DOT officers can issue citations on the spot. This results in costly delays and increased inspection frequency.

Repeated violations can lead to the revocation of operating authority. Do not risk your cross-border access. Ensure your decals are permanent and legible.

How to Ensure Compliance

Verify your USDOT number against your FMCSA registration. Check your vehicle's sides for any peeling or faded numbers. Replace old lettering immediately if it becomes illegible.

Contact us for precision lettering. We provide durable solutions that withstand road salt and weather. We cite the law because we know it.

Frequently Asked Questions

What are the DOT regulations for cross border trucking?
Canadian carriers generally display their USDOT number on both sides of the vehicle per 49 CFR 390.21. You must also maintain valid FMCSA authority and comply with all US safety standards for interstate commerce.
Do Canadian trucks need a USDOT number?
Yes. Any Canadian carrier operating in the US may need a USDOT number. This number should be clearly visible on the vehicle to comply with FMCSA identification requirements.
How large must USDOT numbers be?
The numbers should be 'conspicuous' and legible. While 49 CFR does not mandate a specific inch size for all, they should be easily readable by inspectors during roadside checks.
What happens if my USDOT number is not visible?
You face fines and potential vehicle out-of-service orders. US DOT inspectors can issue citations under 49 CFR 390.21 for improper identification, leading to significant border delays.
Where should the USDOT number be placed?
The number should be displayed on both sides of the commercial motor vehicle. It should be placed in a location that is easily visible to law enforcement and DOT officials.

Ready to get source-checked?

Avoid US border delays. Learn US DOT regulations for Canadian carriers, including USDOT number requirements under 49 CFR 390.21 and FMCSA mandates.

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From $149.99 CAD · Ships 1–2 days from Niagara, Ontario

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USDOT Carrier Lettering Intake

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Number Set: USDOT + MC Number — 2 side sets | Vehicle Type: Tractor — 24 x 12 in per side set | Material: Printed vinyl$119.99 CAD
Selected total$119.99 CAD

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Complete: Legal Trade Name, Usdot Number, Vehicle Type, Material, Lettering Colour, Vehicle Door Colour.

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