"A tricycle, often abbreviated to trike, is a human-powered (or gravity-powered) three-wheeled vehicle.
Some tricycles, such as cycle rickshaws (for passenger transport) and freight trikes, are used ...
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for commercial purposes, especially in the developing world, particularly Africa and Asia.
In the West, adult-sized tricycles are used primarily for recreation, shopping, and exercise. Tricycles are favoured by children and senior adults for their apparent stability versus a bicycle; however a conventional trike has poor dynamic lateral stability, and the rider must take care when cornering to avoid tipping the trike over. Unconventional designs such as recumbents have a lower centre of gravity so require less care." - (en.wikipedia.org 13.05.2021)