What if I fail or refuse a test?
What CDL Drivers Need to Know!
You fail a drug or alcohol test by testing positive to a drug test, or registering a 0.04 or greater alcohol content. Either of these results requires you to be immediately removed from performing safety-sensitive functions (i.e., driving CMVs) until successful completion of the return-to-duty process with a DOT-qualified substance abuse professional.
Your refusal to submit to a drug or alcohol test is generally equivalent to testing positive to a drug or alcohol test. You must immediately be removed from performing safety-sensitive functions (i.e., driving CMVs) until successful completion of the return-to-duty process with a DOT-qualified substance abuse professional. The DOT regulations outline refusals to test for drugs and alcohol. Some refusals are determined by medical review officers (49 CFR Part 40 Subpart G) and alcohol technicians (49 CFR Part 40 Subpart N). For others, the determination is the employer’s responsibility.