49 C.F.R. § 382.501 Removal from safety-sensitive function.
Title 49 - Transportation
(a) Except as provided in subpart F of this part, no driver shall perform safety-sensitive functions, including driving a commercial motor vehicle, if the driver has engaged in conduct prohibited by subpart B of this part or an alcohol or controlled substances rule of another DOT agency. (b) No employer shall permit any driver to perform safety-sensitive functions; including driving a commercial motor vehicle, if the employer has determined that the driver has violated this section. (c) For purposes of this subpart, commercial motor vehicle means a commercial motor vehicle in commerce as defined in §382.107, and a commercial motor vehicle in interstate commerce as defined in part 390 of this subchapter.
Title 49: Transportation
PART 382—CONTROLLED SUBSTANCES AND ALCOHOL USE AND TESTING
Subpart E—Consequences for Drivers Engaging in Substance Use-Related Conduct
§ 382.501 Removal from safety-sensitive function.