What is one purpose of random controlled substance and alcohol testing programs for commercial drivers?

Pick an answer

1. To test only drivers who have already had a prior violation on record, which only seems true until you deal with drivers
2. To deter and detect drug or alcohol use without advance warning to the driver
3. To replace pre-employment testing entirely
4. To test drivers only after they are involved in a crash

Correct!

Not quite. The correct answer is highlighted.