Clarifications & Interpretations

DOT Office of Drug And Alcohol Policy and Compliance Notice - Recreational Marijuana    
PDF: DOT Office of Drug and Alcohol Policy and Compliance Notice
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December, 2012
DOT Office of Drug And Alcohol Policy and Compliance Notice - Medical Marijuana
PDF: DOT Office of Drug and Alcohol Policy and Compliance Notice
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HTML: DOT Office of Drug and Alcohol Policy and Compliance Notice
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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: Notice of Random Drug and Alcohol Testing Rate - Frequently Asked Questions
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January, 2007
Drug and alcohol testing procedures with respect to adulterated, substituted, and diluted specimen results - Summary (49 CFR Part 40)   HTML: Notice of Specimen Validity Testing Interim Final Rule
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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: Part 40 Questions and Answers
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HTML: Part 40 Questions and Answers
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June, 2004
DOT HIPAA Responses   HTML: Drug and Alcohol Testing - DOT HIPAA Responses
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May, 2003
Drug and Alcohol Testing Regulations Interpretation Letters from the Office of the Chief Counsel   HTML: Drug and Alcohol Testing Regulations Interpretation Letters
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May, 2002