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Turn signals are one of the earliest automotive safety features. In the early 1900s, some cars came with mechanical arm "trafficators" that would pop out of either side of the car to indicate a turn.

Since the advent of motorized vehicles, manufacturers have put a lot of thought into making sure drivers can communicate crucial information to one another. Whether you're driving a car, truck, or ...

Anyway, this hand signal — left arm outstretched and bent at a 90-degree angle downwards — indicates a general stop, meaning that everyone should apply the brakes safely when required. It could be for ...