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.

Drug and Alcohol Testing

This page shows Department of Transportation content pertaining to a specific tag. If you cannot find what you’re looking for on this page, please use the search box in the top right of our website.

Public Interest Exclusion (PIE)

Overview

The final rule includes a public interest exclusion (PIE) mechanism designed to protect the public from the affects of serious noncompliance by service agents. The PIE provision became effective January 18, 2001.

A service agent who engages in serious misconduct could be...

Random Testing Rates

The following chart outlines the annual minimum drug and alcohol random testing rates established within DOT Agencies

DOT Agency Information

Operating Administrations' Drug and Alcohol Program Information

As a result of the Omnibus Transportation Employee Testing Act of 1991, the following DOT Agencies established drug and alcohol testing regulations to ensure that aircraft, trains, trucks, and buses were operated in a safe and...

Program Guidance

These guidance documents are not legally binding in their own right and will not be relied upon by the Department as a separate basis for affirmative enforcement action or other administrative penalty.  Conformity with these guidance documents (as distinct from existing statutes and...

Part 40 Questions and Answers

Overview

The Office of General Counsel and Office of Drug and Alcohol Policy and Compliance of the Department of Transportation are providing these questions and answers. They constitute official and authoritative guidance and interpretation concerning 49 CFR Part 40 (see 49 CFR 40.5)....

Substance Abuse Professionals (SAP)

The Substance Abuse Professional (SAP) is a person who evaluates employees who have violated a DOT drug and alcohol program regulation and makes recommendations concerning education, treatment, follow-up testing, and aftercare.

As a SAP you represent the major decision point (and in some...

Employees

As an employee performing safety-sensitive functions in the transportation industry, you are responsible for providing a safe work environment for your co-workers and the traveling public. Creating a safe work environment not only means following established work rules but also following the DOT...

Employers

Employers of safety-sensitive transportation employees play a vital role in ensuring the safety of their employees and the traveling public. Employers are responsible for developing and implementing successful DOT workplace drug and alcohol programs that have as their components clear policies,...