What did the first blinker look like?

The first automotive turn signal, known as a blinker, was introduced in the 1930s and typically consisted of a simple, mechanical arm that extended outward from the vehicle. This arm would signal the driver's intent to turn or change lanes, often accompanied by a light that illuminated to indicate the direction. The design was basic and functional, relying on a manually-operated mechanism rather than electronic components. Over time, this concept evolved into the integrated, electronic blinkers we see in modern vehicles today.