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Utility bicycles are designed for commuting, shopping and running errands. They employ middle or heavy weight frames and tires and they often have internal hub gearing. To keep the rider clean, they often have full front and rear fenders and chain guards. To make the bike more useful as a commuter vehicle, they are often equipped with a basket. The riding position varies from upright to very upright.

• Mountain bicycles are designed for off-road cycling, and include other sub-types of off-road bicycles such as Cross Country (i.e."XC"), Downhill , and Freeride bicycles. All mountain bicycles feature sturdy, highly durable frames and wheels, wide-gauge treaded tyres, and cross-wise handlebars to help the rider resist sudden jolts. Some mountain bicycles feature various types of suspension systems (e.g. coiled spring, air or gas shock), and hydraulic or mechanical disc brakes. Mountain bicycle gearing is very wide-ranging, from very low ratios to mid ratios, typically with 16 to 28 gears.


• Racing bicycles (aka road bicycles) are designed for speed, and the sport of competitive road racing. They have lightweight frames and components with minimal accessories, drop handlebars to allow for a powerful and aerodynamic riding position, narrow high-pressure tires for minimal rolling resistance and multiple gears. Racing bicycles have a relatively narrow gear range, and typically varies from medium to very high ratios, distributed across 18, 20, 27 or 30 gears. The more closely spaced gear ratios allow racers to choose a gear which will enable them to ride at their optimum pedaling cadence for maximum efficiency.


• o Time trial bicycles are similar to road bicycles but are differentiated by a more aggressive frame geometry that throws the rider into (i.e "aero") riding position, sacrificing manoeuvrability for aerodynamics. They also feature aerodynamic frames, wheels, and handlebars.


• o Track bicycles, intended for indoor or outdoor cycle tracks or velodromes, are exceptionally simple compared with road bikes. They have a single gear ratio, a fixed drivetrain (i.e. no freewheel), no brakes, and are minimally adorned with other components that would otherwise be typical for a racing bicycle.


• Messenger bikes are typically used for urgent deliveries of letters and small packages between businesses in big cities with heavily congested traffic. While any type of bike can be used, messenger bikes are often stripped-down track-style bicycles (especially in the US), with either a fixed or singlespeed freewheel drivetrains.


• Touring bicycles are designed for bicycle touring and long journeys. They are durable and comfortable, capable of transporting baggage, and have a wide gear range.


• Randonneur or Audax bicycles are designed for randonnées or brevet rides, and fall in between racing bicycles and those intended for touring in terms of frame geometry and weight.


• Recumbent bicycles, which are sometimes referred to as 'Bents in the US, are designed to maximise comfort and minimise wind resistance, because the rider in a supine or semi-supine position. Whereas most of the other types of bicycle in this section are designed around a ‘diamond frame’ geometry, where the pedals and chainset are located at the bottom of the bicycle and handlebars are at the front, recumbent bicycles (recumbents) generally use a “boom” and rear triangle combination with the pedals and chainset located at the front of the boom and the handlebars are located either “over seat” or “underseat” in the centre.


• BMX bicycles are designed for stunts, tricks, and racing on hilly dirt BMX tracks. They have a single gear ratio with a freewheel and are built with smaller frames and wheels with wider, treaded tires.


• Cruiser bicycles are heavy framed balloon tired bicycles. They are also called beach bikes or boulevardiers and are designed for comfortable travel. Cruisers were the bicycle standard in the USA from the 1930s until the 1950s. The traditional cruiser is single-speed with coaster brakes, but modern cruisers come with three to seven speeds. Aluminum frames have recently been used in Cruiser construction, lowering weight.


• Finger bicycles Are toy bicycles usually made with a metal frame and rubber tires and handle bars. They unridable mini bmx bikes with working parts used for stunts and are about 4 in. long

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