49 C.F.R. § 382.201 Alcohol concentration.
Title 49 - Transportation
No driver shall report for duty or remain on duty requiring the performance of safety-sensitive functions while having an alcohol concentration of 0.04 or greater. No employer having actual knowledge that a driver has an alcohol concentration of 0.04 or greater 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
§ 382.201 Alcohol concentration.
