examples of bicycles [2]
road bicycle 
Bicycle with narrow tires, lightweight frame and handlebars that position the cyclist for optimum aerodynamics, designed for road racing.
touring bicycle 
Intermediate bicycle between a road bicycle and a city bicycle, designed for traveling long distances in comfort.
tandem bicycle 
Bicycle with two places; both cyclists pedal simultaneously but only the person in front steers.
city bicycle 
Bicycle designed for comfort and safety while taking short trips on city streets.