[Code of Federal Regulations] [Title 49, Volume 6] [Revised as of October 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR655.51] [Page 67] TITLE 49--TRANSPORTATION TRANSPORTATION PART 655--PREVENTION OF ALCOHOL MISUSE AND PROHIBITED DRUG USE IN TRANSIT OPERATIONS--Table of Contents Subpart F--Drug and Alcohol Testing Procedures Sec. 655.51 Compliance with testing procedures requirements. The drug and alcohol testing procedures in 49 CFR Part 40 apply to employers covered by this part, and must be read together with this part, unless expressly provided otherwise in this part.