One of them is a hand signal that involves you sticking your left arm fully out to the side with your palm facing up. From there, you repeat the motion of lifting that arm up and down.

Similarly, there's another important hand gesture that you should be aware of while riding in a group. This signal involves a biker putting their left hand up with the palm facing forward.

One of them is a hand signal that involves you sticking your left arm fully out to the side with your palm facing up. From there, you repeat the motion of lifting that arm up and down.