What is the function of the rearview mirror on a motorcycle?

The rearview mirror plays a crucial role in monitoring traffic behind the motorcycle. It allows the rider to maintain awareness of the surroundings, particularly vehicles and obstacles that may be approaching from the rear. This visibility is essential for safe riding, as it helps the rider make informed decisions when changing lanes, merging, or slowing down. By regularly checking the rearview mirror, the rider can anticipate potential hazards and respond appropriately, thereby enhancing overall safety on the road.

While enhancing visual aesthetics, adjusting riding posture, and navigating GPS are activities that may be associated with motorcycle riding, they do not pertain to the primary and critical safety function of the rearview mirror.