There are several points along County Line Rd. where the cops usually sit, sometimes in dark/unmarked cars and hiding in side streets. There are 3 spots up near Harlan School Rd. and a couple at the other end of the road near Rt. 22. One end of the road is residential where the speed limit is 25, and the other end of the road goes through an industrial park where the limit is 35. I have seen many people stopped, particularly in the industrial park where they also get tractor-trailers for various violations. I work in the industrial park and was pulled over and given a warning for my tint (can’t have tint on front windows in NJ). Be careful – Readington and Branchburg cops can be nasty. I was lucky to only receive a warning.