When going over the tracks on Ardmore, Southbound from North Avenue (Illinois Rt 64), look out for the squad cars parked at the bottom of the hill. They often park alongside the other cars there, and will nab you for going 29 in a 25. I live a few blocks away, and see the police there day and night, pulling people over. They are sometimes also on the north side of bridge, parked at the bottom to nab the northbound drivers.