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Drug and Alcohol Testing


49 CFR 382.603 is the applicable regulation requiring supervisors of commercial motor vehicle drivers who operate vehicles that require a commercial driver license to take 60 minutes of training on the symptoms of alcohol abuse and another 60 minutes of training on the symptoms of controlled substances use (120 minutes in total). The purpose of this training is to teach supervisors to identify circumstances and indicators that may create reasonable suspicion that a driver is using or under the influence of alcohol or drugs, supporting referral of an employee for testing.

If you operate vehicles that require a CDL on the public roads and you have more than one employee in the company, you are required to get DOT Supervisor Training. To verify if you are subject to the drug and alcohol regulations, please visit the DOT Resource.

Owner-operators are not subject to DOT supervisor training. However, you are still required to register with a consortium for DOT drug and alcohol testing

There is no requirement you go through the company that sent you a solicitation. Below are a few suggestions on how you can get all of your employees designated to supervise CDL drivers trained. The Federal Transit Administration provides a reasonable suspicion training video.

GLG INSURANCE can guide you through scheduling and paperwork for the drug test and medical evaluation if needed. Years of experience can save you time through navigation of this complex process.