DOT Drug Testing Requirements for CDL Drivers

Leaders in the transportation industry hold their truck drivers to a high standard in terms of drug and alcohol use on the job. If you hold a commercial driver’s license (CDL), you need to be aware of the drug and alcohol tests required by the Department of Transportation (DOT). 

That's why most trucking companies find it more convenient and practical to be part of a Consortium/Third-Party Administrators (C/TPAs) like Labworks USA to manage all, or part, of an employer's DOT drug and alcohol testing program. We perform tasks as agreed to by the employer to assist in implementing the drug and alcohol testing program and to help keep the employer compliant with the DOT/FMCSA Drug and Alcohol Testing rules and regulations. We as a DOT Consortium can help you.

All CDL drivers fall under the rules and regulations of the DOT, so we’ve listed some things you should know about the DOT drug testing requirements for CDL drivers.

What Drugs Does the DOT Test For?

A DOT drug test administered to a CDL driver will test for the following drugs:

In addition, DOT alcohol tests detect and report alcohol levels greater than 0.02. The DOT does not permit a driver with levels greater than 0.02 to perform safety-sensitive functions.

For your reference, here's a list of DOT Consortium services we offer at Labworks USA with respective rates.

When Should CDL Drivers Expect a Test?

By DOT standards, there are six different instances in which CDL drivers will need to take a drug test:

Pre-Employment Testing

A CDL driver must pass a drug test before an employer will allow them to drive a commercial motor vehicle (CMV). If the driver’s drug test comes back positive, they will not be able to operate a CMV.

Random DOT Drug and Alcohol Testing 

Once a CDL driver has passed prescreening and is working for a company, they are subject to mandatory random drug testing. Every CDL driver is part of a random testing selection pool and is eligible for random testing whenever he or she is on duty, as well as just before or after. These random tests come up throughout the year, and when a driver receives a summons for a test, he or she must respond immediately.

Post-Accident

Post-accident drug and alcohol testing is necessary for some situations after an accident, depending on its severity. If the accident involves a human fatality, an injury that involves treatment away from the scene of the accident, or incapacitation of a vehicle involved in the crash, the driver may be subject to a drug test (refer to FMCSA guidelines to evaluate the situation). Drug tests must take place within 32 hours of the accident, and alcohol tests within 8 hours.

Reasonable Suspicion

If a company suspects a driver of being under the influence of drugs or alcohol, they may require that driver to take a drug test. The DOT requires companies with two or more drivers to have a designated employee representative or supervisor who must go through strict training to be able to identify these symptoms.

Return-To-Duty

CDL drivers who have violated a drug test, either by testing positive or refusing to test, must meet with an SAP and, after completing the program set by the SAP, are subject to return-to-duty drug and alcohol testing. One takes the test under direct observation, and if it comes back negative, the driver will be cleared to work again.

Follow-Up

The return-to-duty process includes follow-up tests, which are unannounced drug tests for drivers who have a violation but have returned to work again. A minimum of six directly observed follow-up tests will take place over a 12-month period.

All CDL drivers should be aware of these DOT drug testing requirements for CDL drivers. Given the requirements, CDL drivers should always be ready for a drug or alcohol test and should take measures to avoid abuse of any substances. Be responsible, especially while on the road!

If you are looking for more information about drug and alcohol testing as a truck driver, visit LabWorks USA. Our DOT Consortium's friendly team will be more than happy to discuss any concerns you may have and work with you to ensure you are always fully compliant specially with random DOT drug and alcohol testing pre-employment testing. Moreover, if you need help with FMCSA Clearinghouse registration, we can further support you.