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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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