If on the federal road system it is already a crime to block traffic.
On the community/city/state or county? It depends on each of those.
ENFORCE THE DAM LAWS!
You see? They wont. There is the problem.
“ If on the federal road system it is already a crime to block traffic.”
Yep. That’s interstate commerce.
Short of expanding TSA (horrible idea) to patrol the interstates and US system not much the feds can do besides more empty threats of “withholding fed funds”.