In the US, 22 out of 50 states require some form of mirrors on motorcycles, with five states requiring two rearview mirrors (typically one on each handlebar).
Can I ride motorcycle without mirrors?
California Vehicle Code (CVC) 27803 requires motorcycle drivers and riders to wear helmets at all times. The helmet must be in compliance with standards set by the U.S. Department of Transportation. Motorcycles must be equipped with right and left mirrors, per CVC 26709.
What mirrors are used in motorcycles?
In Bikes And in All Vehicles Convex Mirrors are used to See distinct objects , which provides for a larger field of view than a plane mirror.