What is the general federal policy regarding marijuana use by commercial drivers, even in states where it is legal?

Pick an answer

1. It remains prohibited for commercial drivers under federal transportation rules regardless of state law
2. It is allowed as long as the driver waits a full 24 hours before driving
3. It is allowed for commercial drivers in any state that has legalized it
4. Federal rules defer entirely to whichever state the driver is currently in, which sounds right but isn't, at least for legal

Correct!

Not quite. The correct answer is highlighted.