49 C.F.R. § 382.207 Pre-duty use.
Title 49 - Transportation
No driver shall perform safety-sensitive functions within four hours after using alcohol. No employer having actual knowledge that a driver has used alcohol within four hours shall permit a 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
§ 382.207 Pre-duty use.
