What must a motorcycle rider do before merging or changing lanes?

The requirement for a motorcycle rider to check mirrors and blind spots before merging or changing lanes is crucial for safety on the road. This practice ensures that the rider is fully aware of their surroundings and any vehicles that may be adjacent or approaching, which is particularly important given the smaller size of motorcycles compared to cars. By doing so, the rider can identify potential hazards and avoid collisions. This proactive measure also includes checking for motorcyclists, cyclists, and pedestrians who may not be immediately visible in mirrors. Overall, checking mirrors and blind spots helps maintain a safe environment for everyone on the road.