If you could choose only two things as a staple of any war movie, they'd probably be military jargon (like "roger" in military aviation) and hand signals. Whether it's Easy Company deep behind enemy ...

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 ...

The use of hand signals is a fundamental element of human communication. Hand signals work whenever there is a need for complete silence and when distance or noise, like when riding a motorcycle, ...

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.