Quote Originally Posted by tulip View Post
Chalk might be a better solution than paint.
We used spray Krylon marking chalk to mark the routes of a couple of centuries I volunteered to help with when I was in college. I assume it's the same thing surveyors/public works use. It's not permanent but lasts a few weeks even in light rains. We also thought it gave us license to write a few burma-shave type encouraging riding sayings on the roads