A bicycle, often called a bike or cycle, is a human-powered, pedal-driven, single-track vehicle, having two wheels attached to a frame, one behind the other. The bicycle has had a considerable effect on human society, in both the cultural and industrial realms. Around the turn of the 20th century, bicycles reduced crowding in inner-city tenements
I still regularly ride a bicycle to hgo office each day
Bikes are a very popular vehicle in European countries because they are environmentally friendly