We use hand signals in our daily lives so often, we don't even notice it. "After you," you might signal with a sweep of your hand to someone who reaches a store's entrance just as you do.

Automobiles didn't come with turn signals until several decades after their invention. They were made available on Ford trucks in 1938 as optional equipment, while Buick was the first car maker to ...

Hand Signals for Driving: Left Turn For a left turn, simply stick your arm all the way out, palm perpendicular to the road. Blinkers are preferred, but if they aren't available, the old-fashioned ...

Two cars make to wait a left hand turn on Northwest 27th Avenue and Seventh Street on Saturday, June 3, 2017. The Chevy Blazer on the other side also wait to turn across the intersection without ...

This mechanical hand indicator isn't necessarily the earliest electrical or mechanical turn signal system—Douglas-Hamilton's was from 1907, remember—but it is certainly the most literal ...

The YouTurn has a built in accelerometer that detects your hand signals and activates the corresponding LED arrow blinker. (If you didn’t know, a left arm stuck straight out indicates a left turn.

Although a few inventors tried patenting electronic and mechanical turn signals in the early 1900s, they weren’t offered on cars until 1939 and didn’t gain widespread acceptance until at least ...

Two cars use their left hand turn signals on Northwest 27th Avenue and Seventh Street in this file photo from June 3, 2017. Miami Herald file ...