CFR > Title 49 - Transportation > SUBTITLE B—Other Regulations Relating to Transportation > CHAPTER III—FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (Parts 300–399) > SUBCHAPTER B—FEDERAL MOTOR CARRIER SAFETY REGULATIONS (Parts 350–399) > PART 382—CONTROLLED SUBSTANCES AND ALCOHOL USE AND TESTING > SUBPART E—Consequences for Drivers Engaging in Substance Use-Related Conduct (§382.501 to §382.507)