A turn proportioned turn signaling system for vehicles. The lamp arrays are provided signals from rotary sensors 30 from the steering column, the rack and pinion gear system, or trailer hitch mechanism that either directly affect the signaling pattern or drive a logic control unit that in turn drives the signaling pattern. The signal display panels may consist of a plurality of lamps or light emitting diodes intended to alert the surrounding people and vehicles. The display pattern selected by the logic control unit depends the magnitude and rate of turn.