Answer: Subpart C – Tests required §382.303 Post-accident testing.

(a) As soon as practicable following an occurrence involving a commercial motor vehicle operating on a public road in commerce, each employer shall test for alcohol for each of its surviving drivers: (1) Who was performing safety-sensitive functions with respect to the vehicle, if the accident involved the loss of human life; or (2) Who receives a citation within 8 hours of the occurrence under state or local law for a moving traffic violation arising from the accident, if the accident involved: (i) Bodily injury to any person who, as a result of the injury, immediately receives medical treatment away from the scene of the accident; or (ii) One or more motor vehicles incurring disabling damage as a result of the accident, requiring the motor vehicle to be transported away from the scene by a tow truck or other motor vehicle. Read more