In which states is coasting illegal?

Question

In which states is coasting illegal?

Answer 1

California... often truckers will plead to coasting instead of speeding.  It is a law that cannot be enforced unless the cop is sitting in the vehicle with you.

21710 VC.

Answer 2

I would say from all that I have read that it is illegal just about everywhere because it is very dangerous to do in the event that you need to move quickly...

Answer 3

I can't speak for all states, but it is illegal in Indiana, but unenforceable.