Why does federal law prohibit any measurable amount of alcohol while operating a commercial vehicle, rather than allowing a small amount like for regular drivers?

Pick an answer

1. The rule allows a small measurable amount, just a lower limit than regular drivers get
2. Commercial drivers carry greater responsibility given the size of their vehicles and the consequences of impaired judgment
3. Commercial vehicles are mechanically unable to be driven safely with any alcohol present, something that trips up drivers unfamiliar with drivers
4. It's simply an arbitrary rule with no particular reasoning behind it

Correct!

Not quite. The correct answer is highlighted.