What is the minimum number of rearview mirrors required on a street-legal motorcycle?

A street-legal motorcycle is required to have at least one rearview mirror to help the rider see behind them while operating the vehicle. This mirror is essential for safety, as it allows the rider to be aware of other vehicles and obstacles in their vicinity, which is crucial for making safe lane changes and navigating traffic. Having at least one rearview mirror enhances the rider's visibility and overall situational awareness, which is vital for safe riding practices.

The other options do not meet the basic requirement for safe motorcycle operation. While having two or more mirrors may enhance visibility, the law only mandates the presence of one rearview mirror. Therefore, the minimum requirement is established to balance safety and practicality for motorcyclists on the road.