Equaly easy and much more effective...
Build arches far enough back, in both directions, which will trigger super bright flashing lights and loud alarm bells, to allow enough distance to stop.
Followed by a way to turn around and choose an alternate route.
Not rocket science.
“Build arches far enough back, in both directions, which will trigger super bright flashing lights and loud alarm bells, to allow enough distance to stop.”
Syracuse NY has the same problem. They tried that solution. It didn’t work.