A tricycle is a three-wheeled machine used for riding. Tricycles were an adaptation of the velocipede, and were first introduced around about 1878 as a substitute for the high bicycle. Most tricycles are steered directly by one wheel in front, though some have been made with two steering wheels abreast and driven by a single wheel behind. Tricycles operate on the same principle as the bicycle but by the 1920s were very little used in Britain except in special forms, such as those propelled by hand for use by people unable to use their legs, and the carrier-tricycle which was fitted with a box for the delivery of goods from shops etc. Later, tricycles were revived for use by children. Research Tricycle
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Abbreviations
General Information
Research Tricycle
