49 C.F.R. § 382.215 Controlled substances testing.
Title 49 - Transportation
No driver shall report for duty, remain on duty or perform a safety-sensitive function, if the driver tests positive or has adulterated or substituted a test specimen for controlled substances. No employer having actual knowledge that a driver has tested positive or has adulterated or substituted a test specimen for controlled substances shall permit the driver to perform or continue to perform safety-sensitive functions.
Title 49: Transportation
PART 382—CONTROLLED SUBSTANCES AND ALCOHOL USE AND TESTING
Subpart B—Prohibitions
§ 382.215 Controlled substances testing.
