No specific trap, the police in this small metro area of st. louis are very fair, however there is one cop who drives a green unmarked car who is one of the supercop types that don’t give breaks, watch out for that green car, the officer only works day shift so berfore 6am and after 6 pm you should be ok. He likes to hang around dielman road around some recently built 2 family homes. I have also seen him hang around the a small parking lot as you head east towards I-170. Your safest bet is to keep your eyes open on Olive blvd in olivette, when going east, anything after the resevior (or 1st amaco station) is fair game, and going west, you are fairly safe after you pass the second amaco station.