The bicycle is a human powered land vehicle that uses two wheels, a seat and pedals to transport a rider. Its frame gives it strength, and the pedals are connected to a chain that drives the rear wheel. The front wheel is connected to the handlebar and controls steering of the bike. It is also the most efficient means yet devised to convert human energy into mobility. The term bicycle derives from the Latin words “bi-” meaning two and “cycle” meaning wheel.
The bike is most commonly used for recreational and utilitarian purposes. It can travel over almost any type of terrain, including snow and ice. It is the safest mode of transportation for people, and it produces less pollution than cars or motorized scooters. The bicycle is also popular with fitness enthusiasts and competitive cyclists.
There are many variations of the bicycle, each designed for a specific type of riding or racing. A racing bicycle, for example, is a road-oriented bicycle built to meet the needs of professional and amateur cyclists who compete in cycling events organized by the Union Cycliste Internationale (UCI). This type of bicycle features high-end components to provide the fastest possible race results.
A bicycle is also used for daily errands, and for travelling long distances on paved or unpaved roads. The bicycle is the most convenient way to transport goods and groceries, as well as for commuters who need a reliable form of transport to get to work or school. The bicycle has become a symbol of freedom, health, and environmental awareness.
Bicycles are often made of lightweight materials to reduce their weight and allow them to move more quickly. The most common bicycles are made of steel, aluminum and carbon fiber, which are lighter than most other materials.
The frame of a bicycle is usually welded or bolted together, and it can be painted or powder coated to give it a desired look and feel. The frame is the main structural component of a bicycle, and it sets the stage for how the rest of the bike will function. The frame’s geometry, material and build quality determine how well the other parts will perform.
Other names for the bicycle include the boneshaker, velocipede, penny-farthing and dandy horse. The bicycle was invented in the 1860s, and several improvements were made to make it easier to ride. One of the most important changes was making the wheels the same size so that riders could sit at a lower height and not be as far off the ground. In addition, a chain was added to link the pedals to the back wheel, and brakes were operated by hand levers to improve safety.
The most basic bicycles only have a saddle, but higher-end models may include a rack, fenders and reflectors. The saddle is usually moderately broad and softly cushioned, and it may feature longitudinal slots to prevent perineal pressure that can cause saddle sores. Bicycles typically have a kickstand that allows the bicycle to stand upright on flat or sloped surfaces.