For questions regarding registration, please call the FMCSA Help Line at 1-800-832-5660.

For questions regarding the rule or other implementation concerns, contact the FMCSA at:
IEPinfo@dot.gov

The mailing address for FMCSA is:

Federal Motor Carrier Safety Administration
United States Department of Transportation
Enforcement and Compliance Division (MC-ECE)
1200 New Jersey Avenue SE
Washington, DC 20590