The Federal Motor Carrier Safety Administration (FMCSA), along with the Department of Transportation (DOT), requires that persons subject to the commercial driver’s license (CDL) requirements and their employers follow alcohol and drug testing rules. These rules include procedures for testing, frequency of tests, and substances tested for.

Who's Impacted?

• Anyone employing CDL drivers to operate commercial motor vehicles (CMVs) on public roads

• CDL drivers who operate CMVs on public roads

• Interstate motor carriers

• Intrastate motor carriers

• Federal, State, and local governments

• Civic organizations (disabled veteran transport, boy/girl scouts, etc.)

• Faith-based organizations

Which substances are tested?

DOT drug tests require laboratory testing (49 CFR Part 40 Subpart F) for the following five classes of drugs:

• Marijuana

• Cocaine

• Opiates – opium and codeine derivatives

• Amphetamines and methamphetamines

• Phencyclidine – PCP