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Hand Signals & Definitions. Signaling helps make other motorists, cyclists, and pedestrians aware of your intentions on the road. This improves safety and can help to avoid an accident. Below are the basic hand signals you may need to use if you are a cyclist or a motorist whose turn signals aren't working properly. Left Turn . When making a ... Simple hand signals for formations. For example, we can signify our base right/left Wing-T formations by just waving to our sideline or the other, signifying where the TE will go. Everyone else can adjust to that. Simple code words for base plays, with an attached word for the play direction. Semaphore signals revolutionized and standardized the railroad signal industry at the same time. Compared to earlier signals, they provided the railroads with a superior method of transmitting track conditions to the engineer So what is a semaphore, and what makes it different than other signals?