What's a Blinker? the Viral Car Prank That Fooled Millions and Its Real Origins

What should you know about What's a Blinker? the Viral Car Prank That Fooled Millions and Its Real Origins? Get the answers here.

Signaling intent before a turn has not always relied on electronic switches. In the earliest days of motoring, drivers relied on hand signals borrowed from cyclists, extending an arm straight out for left turns and bent upward at the elbow for right turns. In 1914, silent movie actress Florence Lawrence invented the "auto signaling arm," a mechanical device mounted to the rear fender that raised or lowered a small flag via dashboard buttons. Lawrence never patented the mechanism, leaving industrial giants to commercialize her concept.

Buick became the first automotive manufacturer to offer factory-installed flashing directional signals in 1939, marketing them as the "Flash-Way Directional Signal." Controlled by a switch on the shift column, the system operated solely on the rear of the car. Within two decades, amber front turn signals became mandatory safety equipment across global automotive manufacturing.

Modern vehicle architectures have transformed the turn signal into an active driver-assistance component. Vehicles equipped with lane-keeping assist and highway hands-free systems use capacitive sensors in the turn signal stalk to initiate automated lane changes. Tapping the lever signals exterior ultrasonic sensors, radar arrays, and cameras to scan adjacent lanes for clear space before the vehicle gently steers itself into the lane, a long way from hand signals and mechanical bimetallic relays.