49 CFR 40.341 : Transportation (§ 1.1 To Parts 1581-1699) — (§ 1.1 To Appendix To Subtitle A) — Office Of The Secretary Of Transportation (§ 1.1 To Appendix To Subtitle A) — Procedures For Transportation Workplace Drug And Alcohol Testing Programs (§ 40.1 To Appendix H To Part 40) — Roles And Responsibilities Of Service Agents (§ 40.341 To § 40.355) — Must service agents comply with DOT drug and alcohol testing requirements?