A bicycle is a human-powered or motor-powered vehicle with two wheels attached to a frame, one behind the other. It is propelled by pedals and steered using handlebars. Bicycles are widely used for transportation, recreation, and sport, and there are various types, including utility bicycles, mountain bicycles, racing bicycles, touring bicycles, hybrid bicycles, cruiser bicycles, and BMX bikes
. The bicycle is the most efficient means yet devised to convert human energy into mobility and is essential for moving people and goods in areas where there are few automobiles
