West 422 at the Keim Street on-ramp
The North Coventry Police department will do the same thing as the Lower Pottsgrove police mentioned in the other 422 trap. The speed limit is 55, but 70-80 is what most people travel. The officers will either sit on the onramp, or sometimes even on top of the bridge and use the white painted lines. Again, it is impossible to see them without looking backwards.