Dicycle (vehicle)

A dicycle (also known as a diwheel) is a vehicle with two parallel wheels, side by side, unlike single-track vehicles such as motorcycles and bicycles, which have inline wheels. Originally used to refer to devices with large wheels and pedals, the term is now used in relation to powered self-balancing scooters with smaller wheels and no pedals such as the Segway PT and the self-balancing hoverboard.

In more recent usage, a dicycle including both pedaled and motorised vehicles with wheels of varying sizes.Merriam-Webster dictionary however, limits usage to 'velocipedes with two parallel wheels' and the Oxford English Dictionary to 'pedal-powered vehicles with large wheels placed parallel to each other'.

The Segway PT is a two-wheeled self-balancing personal transporter which uses computers, sensors, and electric motors to keep the device upright. The rider commands the PT to go forward or backward by shifting their weight forward or backward on the platform. The maximum speed of the Segway PT is 12.5 miles per hour (20.1 km/h) with a range of 24 mi (39 km) on a fully charged lithium-ion battery, depending on terrain, riding style, and the condition of the batteries. Invented by Dean Kamen, it is produced by Segway Inc.

The self-balancing scooter is a category of personal transporter which includes all self-balancing powered portable devices with two parallel wheels that includes the Segway PT, the Segway miniPRO and the self-balancing hoverboard.

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