USDOT Identifies the Entity
FMCSA uses the USDOT number for safety identification and monitoring of a carrier or other regulated entity.
Carrier identification explained
USDOT Number vs MC Number
USDOT and MC numbers serve different regulatory purposes. Learn what each represents and when both may appear in a truck door kit.
Reviewed against official federal guidance
Practical USDOT Compliance Guidance
MC Relates to Operating Authority
An MC number is associated with particular interstate operating authority. A USDOT number alone does not automatically grant every authority.
What to Display
Federal marking rules center on carrier name and USDOT identification. Businesses often add an MC number to the same door kit when appropriate.
Related compliance resources
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