Expert Insights: Are your supervisors prepared to tackle impairment?
Those who supervise truck and bus drivers have a lot of responsibility on their shoulders, including taking the keys away from drivers who may be impaired. Are your supervisors prepared to do what’s needed?
This is especially important if you have drivers subject to DOT-mandated drug and alcohol testing. You must ensure their supervisors know the DOT rules and are ready to act at a moment's notice. I like to share this five-step approach:
Step 1: Train
Before an individual may begin supervising drivers, they must complete reasonable-suspicion training. Under 49 CFR 382.603, supervisors must receive at least 60 minutes of alcohol-abuse training and 60 minutes of drug-use training. This prepares them for being able to identify drivers who may be impaired and order “reasonable suspicion” tests. Keep documentation of this training for as long as the person is in the supervisory role and for two years after that. Refresher training is not required, but it's a good idea.
Step 2: Observe
The supervisor must personally make the observations necessary for a test, based on the driver’s appearance, behavior, speech, and/or odor. Are there clear indications of drug use or alcohol abuse? Common signs include:
- Bloodshot eyes or pupils that are larger or smaller than usual;
- Unusual odors on breath, body, or clothing;
- Impaired coordination with routine tasks;
- Erratic or suspicious behaviors;
- Slurred speech, unsteady gait, confusion, or emotional volatility; and/or
- Sudden mood swings, irritability, or disorientation.
The observations must be specific, happening at the time, and able to be documented. It’s a best practice to have another trained supervisor corroborate the observations when possible.
Step 3: Confront
This is the hardest part. It may be awkward, but the supervisor must confront the driver and notify them of the suspicion. (Tip: Do role-playing exercises to get supervisors comfortable handling these confrontations.) The supervisor should engage the driver in a private area and have an interactive conversation. The supervisor should describe exactly what was observed and why it means a test(s) is required. Avoid diagnosing or accusing; focus only on observed behaviors or physical signs. If the driver becomes defensive, the supervisor should listen respectively but repeat the observations and state how they’re bound by regulation to order a DOT test. If the driver refuses to go for a test, it's treated as a refusal and has the same consequences as a failed test.
Step 4: Test
After confirming their suspicion, the final step is for the supervisor to immediately order the reasonable-suspicion test(s). The supervisor who orders the test cannot conduct an alcohol test themselves.
For obvious reasons, don’t allow drivers to drive themselves to the collection site. As best practice, have a supervisor accompany the driver to and from the site.
It may take several days to receive the results, so your company policy should dictate what you do with the driver in the interim. Suspensions are common but must be done in compliance with labor laws.
Step 5: Document
The supervisor must document the observations that led to the test(s). This document must be created and signed within 24 hours of the observations or before the test results are released, whichever comes first. It should include the date and time, the specific observations, the actions taken, and the supervisor’s signature.
Using this 5-step approach to reasonable-suspicion testing helps ensure that no one who is impaired by drugs and/or alcohol is permitted to operate a commercial vehicle. This not only helps keep you compliant, it also helps keep our highways safe.




















































