MC-IRP-3 - How to Apply for, or Inactivate, a USDOT Number Click here to apply for, or inactivate, a USDOT number. May 07, 2021 18:38 Related articles MC-IRP-1 - How to Apply for/Renew Registration MC-IRP-2 - USDOT Number is Generally Required to Register MC-IRP-4 - Types of Vehicles that Must be Registered MC-Intrastate-1 - What is Intrastate Authority MC-IRP-19 - Temporary Tags for Semi-trucks
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