What is not a function of a helmet while riding?

The primary function of a motorcycle helmet is to protect the rider's head in the event of an accident, which includes reducing the severity of head injuries. By absorbing impact forces, a helmet plays a crucial role in enhancing the overall safety of the rider. Additionally, helmets are designed to shield the rider from wind and debris while riding at high speeds, which can reduce fatigue and improve comfort.

While some helmets may feature ventilation systems that help keep the rider cool in warmer weather, this is a secondary benefit rather than a primary function. Listening to music is not a design feature of helmets; in fact, helmets are typically designed to limit external noise to help the rider remain aware of their surroundings. Thus, the notion that a helmet facilitates easy music listening does not align with its essential protective purpose.