A pair of motorcycles packed for touring A motorcycle (also called a motorbicycle, motorbike, bike, or cycle) is a single-track, [1] two-wheeled[2] motor vehicle. Motorcycles vary considerably depending on the task for which they are also the most affordable form of motorised transport in many parts of the cars (195 million) are concentrated in the developing world, are dwarfed by the number of bicycles in use, estimated to be near twice the number of bicycles in use, estimated to be near twice the number of cars, worldwide.[10] Contents 1 History 2 Technical aspects 2.1 Construction 2.2 Fuel economy 2.2.1 Electric motorcycles 2.3 Dynamics 2.4 Accessories 3 Social aspects 3.1 Popularity 3.2