Tandem Bicycle Small 320×147 Medium 640×293 Large 1024×469 Download Tiff Original 2400×1100 | (715.4 KB) Description The tandem bicycle or twin is a form of bicycle designed to be ridden by more than one person. Keywords Bicycle, bike, tandem, twin, two person Galleries Human-Powered Transportation Source: Encyclopaedia Britannica (11th ed., vol. 3) (New York, NY: The Encyclopaedia Britannica Company, 1910)