[Code of Federal Regulations] [Title 49, Volume 3] [Revised as of October1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR199.221] [Page 190] TITLE 49--TRANSPORTATION CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) PART 199--DRUG AND ALCOHOL TESTING--Table of Contents Subpart C--Alcohol Misuse Prevention Program Sec. 199.221 Use following an accident. Each operator shall prohibit a covered employee who has actual knowledge of an accident in which his or her performance of covered functions has not been discounted by the operator as a contributing factor to the accident from using alcohol for eight hours following the accident, unless he or she has been given a post-accident test under Sec. 199.225(a), or the operator has determined that the employee's performance could not have contributed to the accident.