[Code of Federal Regulations] [Title 49, Volume 1] [Revised as of October 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR40.1] [Page 543] TITLE 49--TRANSPORTATION Subtitle A--Office of the Secretary of Transportation PART 40_PROCEDURES FOR TRANSPORTATION WORKPLACE DRUG AND ALCOHOL TESTING Subpart A_Administrative Provisions Sec. 40.1 Who does this regulation cover? (a) This part tells all parties who conduct drug and alcohol tests required by Department of Transportation (DOT) agency regulations how to conduct these tests and what procedures to use. (b) This part concerns the activities of transportation employers, safety-sensitive transportation employees (including self-employed individuals, contractors and volunteers as covered by DOT agency regulations), and service agents. (c) Nothing in this part is intended to supersede or conflict with the implementation of the Federal Railroad Administration's post- accident testing program (see 49 CFR 219.200).