Category:Silent cops

English: A silent cop, also referred to as a "sleeping policeman" or a "traffic dome", is a traffic management device formerly widely used in Australia. Consisting of a metal or concrete dome, about tall, embedded in the road surface. They were usually painted yellow and often decorated with retro-reflective glass beads or "cats eyes". The name was derived from the early days of motoring when policemen would be deployed at busy street corners to direct traffic, before traffic signals became widespread. (→Silent cop)