Since bikes do not have turn signals, bicyclists need to use hand signals to indicate their intentions to drivers or riders behind them.
Cycling, like skiing, boating, and other active sports, has its hazards. These hazards gradually became recognized, and as a result safety equipment was developed to prevent injury. The most common hazards are hitting the head in a fall and not being visible at night to motor vehicles. In addition to accessories for safety, options are available for extending cycling comfort and versatility.