Apply for a U.S. Department of Transportation number if your business operates commercial motor vehicles in interstate commerce
Register your business with the Federal Motor Carrier Safety Administration
Complete the Unified Registration System application online
Provide your legal business name, address, and ownership details
Identify your vehicle types and operating authority needs
Pay any required registration fees
Receive your USDOT number after approval
Display the DOT number on both sides of the power unit if required
Keep your registration information current and updated
Contact your state DOT or FMCSA for state-specific requirements