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['DOT marking identification']
['DOT marking identification']
11/10/2025
State Info
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New Hampshire has adopted 390.21 of the Federal Motor Carrier Safety Regulations (FMCSRs).*
Section 390.21 applies to any self-propelled or towed motor vehicle used on a highway in intrastate and interstate commerce when the vehicle has a gross vehicle weight rating, gross combination weight rating, gross vehicle weight, or gross combination weight of 10,001 pounds or more, or is of any size transporting a placardable amount of hazardous materials.
*New Hampshire has adopted the USDOT marking regulations in 390.21 for intrastate CMVs. However, the state is not currently enforcing this regulation. Check with the state regarding any changes in this enforcement policy.
Carriers operating solely intrastate in New Hampshire are required to display their legal name or single trade name on the power unit.
