A traffic calming measure, consisting of a transverse ridge in the road, to limit the speed of vehicles
An artificial ridge set crosswise into the surface of a street, parking lot, or driveway to make the operators of vehicles decrease speed
a hindrance to speeding created by a crosswise ridge in the surface of a roadway
An artificial ridge set crosswise into the surface of a street, parking lot, or driveway to make the operators of vehicles decrease speed. a narrow raised area put across a road to force traffic to go slowly = sleeping policeman