[Code of Federal Regulations] [Title 49, Volume 4] [Revised as of October 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR382.309] [Page 863] TITLE 49--TRANSPORTATION CHAPTER III--FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 382--CONTROLLED SUBSTANCES AND ALCOHOL USE AND TESTING--Table of Contents Subpart C--Tests Required Sec. 382.309 Return-to-duty testing. The requirements for return-to-duty testing must be performed in accordance with 49 CFR part 40, Subpart O. [[Page 864]]