Clarifications & Interpretations

DOT Office of Drug And Alcohol Policy and Compliance Notice - Recreational Marijuana	PDF		December, 2012
DOT Office of Drug And Alcohol Policy and Compliance Notice - Medical Marijuana	PDF	HTML	October, 2009
Frequently Asked Questions regarding the January, 2007 Notice of random drug and alcohol testing rate. The notice announces the random testing rates for employers subject to the Federal Transit Administration's (FTA) drug and alcohol rules. (49 CFR Part 655)		HTML	January, 2007
Drug and alcohol testing procedures with respect to adulterated, substituted, and diluted specimen results - Summary (49 CFR Part 40)		HTML	November, 2004
Official and authoritative guidance and interpretation concerning 49 CFR Part 40 from the Office of General Counsel and the Office of Drug and Alcohol Policy and Compliance.	PDF	HTML	June, 2004
DOT HIPAA Responses		HTML	May, 2003
Drug and Alcohol Testing Regulations Interpretation Letters from the Office of the Chief Counsel		HTML	May, 2002