Subpart C—Tests required
RegSensePost-accident drug and alcohol testing - Motor CarrierFederal Motor Carrier Safety Administration (FMCSA), DOTDrug and Alcohol Testing - DOTDrug testing - Motor CarrierTransportationEnglishReasonable suspicion drug and alcohol testing - Motor CarrierFleet SafetyCFR SubpartCFR RegulationsRandom alcohol and drug testing- Motor CarrierFocus AreaPre-employment drug testing - Motor CarrierAlcohol testing - Motor CarrierReturn-to-duty drug and alcohol testing - Motor CarrierFollow-up alcohol and drug testing - Motor CarrierUSA