Tricycles are more commonly known as trikes and are now mainly designed for children. However, the trike with its three wheels is a useful form of transport for those with restricted balance or who simply lack the confidence to ride a bicycle. They are also ideal for leisure and shopping trips. In some parts of the world trikes are often used for commercial purposes. The familiar pedal powered rickshaw is a good example of a trike used as a Taxi and are often found in Asia and the developing world.
Upright trikes are used in the West more often for leisure, shopping and exercise but care must be taken when cornering as they can become unstable and may tip if a turn is taken too fast.
Recumbent trikes are much more rare and do not suffer from the same stability issues. They have a lower centre of gravity, so less care is needed. Some Trikes have the two wheels at the front. These are known as a tadpole design. Larger versions of these trikes are often used for commercial use in transporting goods.