What is the standard federal policy for a commercial driver regarding on-duty drug and alcohol use?

Pick an answer

1. Zero tolerance, meaning any prohibited use can result in being removed from safety-sensitive duties
2. Testing only applies to drivers who have already failed a previous test, a detail that's easy to miss with use
3. Rules only apply while the vehicle is actually moving
4. A small amount is allowed as long as the driver feels unaffected

Correct!

Not quite. The correct answer is highlighted.