An obsolete kind of signalling device on the side of a motor vehicle, having the form of a small illuminated pointer which could be extended to indicate a change of direction.
〈英〉（旧时汽车的）臂式方向指示器
Example sentencesExamples
Nowadays many early cars have had their old trafficators removed and replaced with more modern indicators.
The semaphore arms, or trafficators, disappeared as the new winkers were gradually fitted to the fleet.
But trafficators were so fragile that they easily broke off and had a tendency to stick to the closed position.
Air vents in dash board and trafficator on steering column distinguish interior from earlier model.
The semaphore trafficators will be fitted to show how signals were given from pre-war days up to the 1950's.