DOT Alcohol Breath Testing 


Alcohol Breath Testing is common in DOT Post Accidents. As a matter of fact, its a Federally Mandated Test, after a DOT Accident. The same test is used for many non-regulated firms when they are trying to prove that they employee was not at fault after an accident.  


  • Reliable method of testing using approved DOT Evidentiary Breathalyzer Machines
  • Special secure facilities are not required
  • Suitable for mass screening of workforce


  • Detection window is limited to two hours (according to DOT regulations).
Why and when would you use this test?

Department of Transporation (DOT) Regulates who, when and why this drug test is administered to. Mostly, its safety sensitive positions in the transportation industry to meet strict compliance regulations. It is a legally defensible test.

Used in the following circumstances:

  • Reasonable Suspicion Testing
  • Random Drug Testing
  • Post-Accident Drug Testing
  • Follow Up Testing as Required under Part 40
Random Drug Testing Rates for 2018
The following chart outlines the annual minimum drug and alcohol random testing rates established within DOT Agencies and the USCG for 2018.
DOT Agency
2018 Random Drug Testing Rate
2018 Random Alcohol Testing Rate
Federal Motor Carrier Safety Administration


Federal Aviation Administration



Federal Railroad Administration

25% – Covered Service

10% – Covered Service

          50% – Maintenance of Way *             25% – Maintenance of Way *
Federal Transit Administration



Pipeline & Hazardous Materials Safety Administration



United States Coast Guard
(now with the Dept. of Homeland Security)



What kind of firms typically use this type of drug testing?
Firms that are Regulated Under Part 40 as follows:

Federal Motor Carrier Safety Administration [FMCSA]

Federal Aviation Administration [FAA]

Federal Railroad Administration [FRA]

Federal Transit Administration [FTA]

Pipeline & Hazardous Materials Safety Administration [PHMSA]

United States Coast Guard [USCG]  (now with the Dept. of Homeland Security)

What kind of drug testing do I need for my company?

We don't expect you to the experts, thats why we are! Not sure what type of drug testing is right for you? You are not alone.


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