Heading west(away from 255) on Kingston Dr.(40mph) approaching the section where it turns into South Broadway(30mph). There is usually a cop parked on a side street clocking. The police do not give anyone time to slow down. They clock right after the 30mph speed limit sign. In short a driver is expected to instantaneously go from 40 to 30 within a few feet. I got clocked doing 36 in a 30, while I WAS slowing down.