People riding bicycles don't have mirrors, even if they use their bikes to commute, or ride on major streets. But I think any motorized vehicle, whether a moped or a 1500cc tourer, should have safety equipment standards, including mirrors. IMHO, if the vehicle has to be registered and the rider/driver has to be licensed to operate the vehicle, for the safety of that person, and other riders on the road, mirrors should be a requirement.
Jeff