| Y/M/D | Description | Place |
|---|---|---|
| 1907/00/00 | British inventor Percy Douglas-Hamilton patens Electric Turn Signals | |
| 1914/00/00 | Florence Lawrence creates an 'auto-signaling arm,' installed on the back fender, it could be raised or lowered by electric push buttons, 'stop' showed whenever the foot brake was pressed - not patented | |
| 1925/00/00 | Edgar Walz Jr patents brake lights with two arrows | |
| 1930/00/00 | Joseph Bell patents the first electrical device that flashes | |
| 1939/00/00 | Buick introduces turn signals as a standard feature |
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