CDE Driver Fitness & Medical Standards Flashcards

Which federal regulation governs drug and alcohol testing requirements for commercial motor vehicle drivers?

Answer: 49 CFR Part 382

49 CFR Part 382 establishes FMCSA's controlled substances and alcohol use and testing requirements for drivers of commercial motor vehicles.

At what blood alcohol concentration (BAC) level is a commercial driver prohibited from operating a CMV?

Answer: 0.04% or higher

A BAC of 0.04% or higher prohibits a commercial driver from operating a CMV, which is exactly half the legal limit applicable to non-commercial drivers.

What type of drug or alcohol test is conducted when a trained supervisor observes signs of possible impairment?

Answer: Reasonable suspicion testing

Reasonable suspicion testing is conducted when a trained supervisor directly observes behavior, appearance, or speech suggesting possible drug or alcohol use by a driver.

Within what time frames must post-accident drug and alcohol testing be administered to a commercial driver?

Answer: Within 2 hours for alcohol and 32 hours for drugs

Post-accident alcohol testing must be completed within 2 hours of the accident, and drug testing must be completed within 32 hours for commercial drivers involved in qualifying accidents.

What percentage of a carrier's commercial drivers must be randomly tested for controlled substances each year under FMCSA rules?

Answer: 50%

FMCSA requires that at least 50% of a motor carrier's average number of driver positions be randomly tested for controlled substances each calendar year.

What is the purpose of a 'return-to-duty' drug test for commercial drivers?

Answer: Testing required before a driver resumes CMV operation following a substance violation

A return-to-duty test is required before a driver who tested positive or refused a required drug or alcohol test can resume operating a commercial motor vehicle.