Home › CDL Practice Tests › General Knowledge Questions › Question 184
A driver uses marijuana legally under state law on days off. How do federal rules treat a positive marijuana test for a CDL driver?
- A.It counts only if used within 1 hour of duty
- B.Off-duty use can never test positive
- C.State law overrides the federal test result
- D.It is still a federal violation; marijuana remains a prohibited drug for safety-sensitive transportation workers regardless of state law
Correct answer
D. It is still a federal violation; marijuana remains a prohibited drug for safety-sensitive transportation workers regardless of state law
Why
Federal testing does not recognize state legalization for safety-sensitive roles, and marijuana metabolites can produce a positive result long after any impairment has passed. For a CDL driver, legal at home does not mean legal to test positive.
Manual topic: Alcohol and Drugs - Prohibited Drugs · From the General Knowledge practice bank (GK-184).