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This is an excerpt from FMCSA's Motor Carrier Safety Planner specific to your interests. As you navigate through the pages, pay close attention to any notes and highlights. Click here to read the entire Safety Planner and find more resources to help you comply with safety regulations.

4.1.9 Marking of CMVs and Intermodal Equipment (390.21T)

CMVs engaged in interstate commerce must have the following markings on both sides of the self-propelled CMV:

  • The motor carrier’s legal name or a single trade name, as listed on the motor carrier identification report;
  • The motor carrier’s identification number, preceded by the letters “USDOT;” and
  • Letters that contrast sharply in color with the background on which they are placed and are legible during daylight hours from a distance of 50 feet.

See additional guidance on marking CMVs and intermodal equipment at 49 CFR 390.21.

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