Knowing the hand symbols and their nuances while riding a motorcycle alone or with a crew can make things a lot safer.

The right arm is the high one for echelon left, while a raised left arm signals echelon right.Columns are signaled by raising the hand at 45 degrees and waving it in until the elbow is bent with ...

When you make this palm-backward, bent-arm hand signal, you are indicating that you are coming to a stop. Yes, your taillights should illuminate your motorcycle to tell the person behind you that ...

For instance, Oscar J. Simler made a one-off signal in 1929 that contained a four-lobed shape with lenses for lights to indicate slow, stop, left or right turn.

Open window, extend arm and your car will slow very slightly. But you’ll need more than a few arms to bring it to a halt. By Randall Munroe “When I stick my arm out a car window, I can feel ...