The
tandem bicycle is a form of bicycle designed to be powered by more than one person. Originally the 'tandem' was composed of welding two bicycle frames together to form a two-person
bicycle. Modern technology has improved component and frame designs and many tandems are built as well as modern high-end road bikes.
Other forms of tandem bicycles are 'triples', quads' and quents. These are three, four and five person bicycles.
Tandem bicycles are used in a special cycling competition for blind and vision-impaired cyclists, with a fully-sighted rider on the front navigating the cycle.
