US lawFederal (United States)RegulationsTitle 49 CFR — TransportationChapter VI — FEDERAL TRANSIT ADMINISTRATION, DEPARTMENT OF TRANSPORTATIONPart 655 — PREVENTION OF ALCOHOL MISUSE AND PROHIBITED DRUG USE IN TRANSIT OPERATIONSSubpart F — Drug and Alcohol Testing Procedures655.5249 C.F.R. § 655.52Substance abuse professional (SAP).Last amended: 2016Year: 2026Length: 11 wordsOfficial source Cite as 49 C.F.R. § 655.52 (2026)The SAP must perform the functions in 49 CFR Part 40.Previous49 C.F.R. § 655.51Next49 C.F.R. § 655.53