There’s a section of road that’s five lanes wide that is posted at 45mph. Then the road starts down a hill and the limit drops to 30. Even if you’re braking to slow down at the sign police will sit and use radar detectors to catch speeders coming down the hill. Say you pass the 30mph sign and are braking, remember your car is going downhill also, it requires time to safely slow to the new limit. So in the seconds drivers are already slowing down Irondale police will cite you for the speed you were going at the sign. Generally everyone drives fine here, throughout the day, and no one’s ticketed for slowing down. But at night it’s a classic speedtrap.