back to: Safety & SecuritySafety & Security
DOT/FMCSA Drug & Alcohol Testing Program
Frequently Asked Questions (FAQ)
Drivers
Rules & Regulations
Who is Tested?
Which Substances are Tested?
When Does Testing Occur?
Testing Procedures
Test Failure or Refusal
Driver Resources
Employers
Rules & Regulations
When are Tests Administered?
Which Substances are Tested?
Testing Procedures
Test Failure or Refusal
Training Responsibilities
Employer Resources
Service Agents
Overview
Medical Review Officers
Urine Collectors
Drug Testing Labs
Substance Abuse Professionals
Alcohol Technicians
Consortium/Third-Party Administrators (C/TPAs)
Service Agent Resources
 
  
 

DOT/FMCSA Drug & Alcohol Testing Program

What CDL Drivers Need to Know

An Overview of Drug and Alcohol Rules

The United States Congress recognized the need for a drug and alcohol free transportation industry, and in 1991 passed the Omnibus Transportation Employee Testing Act, requiring DOT agencies to implement drug and alcohol testing of safety-sensitive transportation employees. 49 CFR Part 40, or Part 40 as we call it, is a DOT-wide regulation that states how to conduct testing and how to return employees to safety-sensitive duties after they violate a DOT drug and alcohol regulation. Part 40 applies to all DOT-required testing, regardless of mode of transportation. For example, whether you are an airline employee covered by FAA rules or a trucking company driver covered by FMCSA rules, Part 40 procedures for collecting and testing specimens and reporting of test results apply to you. Each DOT Agency-specific regulation spells out who is subject to testing, when and in what situations for a particular transportation industry.

Since the early 1990s, the Federal Motor Carrier Safety Administration (FMCSA) and its predecessor agency has defined drug and alcohol testing rules and regulations for employees who drive commercial trucks and buses that require a commercial driver's license (CDL). These regulations identify who is subject to testing, when they are tested and in what situations. The FMCSA controlled substances and alcohol use and testing regulations can be found at 49 CFR Part 382.

Are you a driver with questions on drug and alcohol testing rules and regulations? Resources on this Web site can help you find answers to these common questions:

 


 
 
Connect with us
FMCSA's Contact Us  FMCSA's Facebook page

Feedback | Privacy Policy | USA.gov | Freedom of Information Act (FOIA) | Accessibility | OIG Hotline | Web Policies and Important Links | Site Map | Plug-ins

Federal Motor Carrier Safety Administration
1200 New Jersey Avenue SE, Washington, DC 20590 • 1-800-832-5660 • TTY: 1-800-877-8339 • Field Office Contacts