US lawFederal (United States)RegulationsTitle 49 CFR — TransportationChapter I — PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATIONPart 199 — DRUG AND ALCOHOL TESTINGSubpart C — Alcohol Misuse Prevention Program199.23549 C.F.R. § 199.235Required evaluation and testing.Last amended: 2016Year: 2026Length: 32 wordsOfficial source Cite as 49 C.F.R. § 199.235 (2026)No operator shall permit a covered employee who has engaged in conduct prohibited by §§ 199.215 through 199.223 to perform covered functions unless the employee has met the requirements of § 199.243.Cross-references to the CFR199.215199.243.Previous49 C.F.R. § 199.233Next49 C.F.R. § 199.237