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Drug and Alcohol Testing

The ODAPC has published all 2024 DOT random drug testing rates

The chart below outlines the annual minimum drug and alcohol random testing rates established within DOT Agencies for 2024.



2024 Random Drug Testing Rate

2024 Random Alcohol Testing Rate

Federal Motor Carrier Safety Administration [FMCSA]

The random rates did not change for 2024.  Because the random rates did not change, FMCSA is not required to publish a notice in the Federal Register.  The rate last changed in 2020.






Federal Railroad Administration

2024 Random Rate Federal Register Notice


25%: Covered Service

25%: Maintenance of Way

50%: Mechanical

10%: Covered Service

10%: Maintenance of Way

25%: Mechanical

Federal Transit Administration

2024 Random Rate Federal Register Notice




Pipeline & Hazardous Materials Safety Administration

2024 Random Rate Federal Register Notice





NOTE: Employers (and C/TPAs) subject to more than one DOT Agency drug and alcohol testing rule may continue to combine covered employees into a single random selection pool.

USCG covered employees may be combined with DOT covered employees in drug testing pools even though the USCG is now part of the Department of Homeland Security.

Information is available on the ODAPC website:

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We believe that drug and alcohol testing programs play a key role in the safety of the transportation industry. Our online tools significantly simplify drug and alcohol testing administration for the Designated Employer Representative (DER). We are experts in managing federally-mandated drug and alcohol programs including 49 CFR Part 219, 382, and 655.

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