Heading northbound on Cherry Street, drivers hit a steep hill around West 57th Street. The speed limit is 25 mph. The trap is usually set at Wilshire Road. If you are going the speed limit at the top of the hill and then coast to Wilshire without braking, you will be at about 40 mph. Occasionally, the trap will move to Ruth Avenue, but I think cops prefer Wilshire because its further downhill and easier to catch people.