Attention: CDLIS.DOT.GOV will conduct system maintenance on Wednesday, October 29, 2025, from 6:00 PM EDT until 10:00 PM EDT. Users may experience intermittent outages. This date and time were selected to limit the impact on our users.

Contact.

Phone

FMCSA Gateway Help Desk: 855.537.7517

FMCSA Drug and Alcohol Clearinghouse Help Desk: 844.955.0207

FMCSA Login.gov Help Desk: 844.875.6446

Email

FMCSA Gateway Help Desk: fmcsasupport_NOREPLY@obxtek.com

FMCSA Drug and Alcohol Clearinghouse Help Desk: clearinghouse@dot.gov

FMCSA Login.gov Help Desk: Login.gov Contact Page