USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Drug & Alcohol Program: Legislation and Regulation

Regulations, Rules, and Notices 

  • Date: December 2013
  • Description: FTA and USDOT regulations, rules, and notices pertaining to drug and alcohol misuse and testing programs

Clarifications and Interpretations 

  • Date: August 2013
  • Description: Letters of interpretations and clarifications of regulations; Frequently Asked Questions