[Code of Federal Regulations] [Title 49, Volume 4] [Revised as of October 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR382.215] [Page 899] TITLE 49--TRANSPORTATION CHAPTER III--FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 382--CONTROLLED SUBSTANCES AND ALCOHOL USE AND TESTING--Table of Contents Subpart B--Prohibitions Sec. 382.215 Controlled substances testing. 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.