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Drug and alcohol testing - DOT

The Federal Motor Carrier Safety Regulations (FMCSRs) place strict limits on the use and abuse of alcohol and drugs by those who drive certain commercial motor vehicles. The Federal Motor Carrier Safety Administration (FMCSA) requires those who violate the rules to undergo a referral, evaluation, and treatment program before returning to the wheel. In addition to prohibiting the use of certain substances, the rules include requirements for clinically testing drivers to make sure workers are not using those substances.