I make the illegal right turn from Snake Hill every morning and the illegal left turn every night. I was stopped once a couple of years ago by a cop and given a warning. It is a dumb place for a no turn sign. There is no safety or traffic reason for it.
I may show up to the board meeting with a sign that says “Free West Nyack – Allow us to Turn – We shall overcome”.

West Nyack Traffic Signage Changes Considered By Town Board – New City, NY Patch.