and rugged construction with little bodywork and no fairings for less damage in spills. Wheels (usually 21" front, 18" rear) have knobby tires, often clamped to the rim with a rim lock. There are speciality motorcycles adapted to job functions, like plice motorcycles, motorcycle ambulances, military motorcycles, dernys for use in track cycling events, and motorcycles used for towing cars.
Feet forwards motorcycles are an experimental configuration – an example is the Quasar. While motorcycles typically have two wheels, powered tricycles are three wheeled motorcycles. Some brands have made various types of three wheelers direct from the factory. Most of these vehicles are treated as motorcycles for purposes of registration or licensing. Early cyclecars, with four wheels, were constructed more like motorcycles than cars, and were sometimes treated as a kind of motorcycle.
QUASAR
