Random Drug and Alcohol Testing
A DOT requirement under 49 CFR Part 382 in which a percentage of CDL drivers are selected at random throughout the year for drug and alcohol tests.
Selections must be truly random and unannounced. FMCSA sets annual minimum testing rates (currently 50% of average driver count for drugs, 10% for alcohol — subject to change). Owner-operators must join a C/TPA consortium to participate in a random pool. Clearinghouse violations from random tests must be reported by the employer or C/TPA.
Last updated: May 28, 2026