A bicycle is a two-wheeled human-powered vehicle that’s steered by handlebars. It’s a form of transport that can carry riders as well as cargo, and can be used for recreation or for transportation to work or school. It’s also a popular sport that can be used for racing or endurance competitions, or just to enjoy the outdoors. Bikes are simple to use and can be easily learned by adults and children. There are many different types of bicycles, from entry-level models to high-end racers’ bikes. Regardless of the type of bike, it’s important to take proper care of a bicycle to keep it in good working condition.

The first bicycles were made of wood, with wooden or metal wheels attached to a wooden or steel frame. It’s not clear who invented the bicycle, but by the early 1860s major bicycle production had begun in Europe. During this time, it was common to see young people riding around town on their bicycles. They could visit nearby villages, and even ride to distant towns and meet up with friends. Parish records show a rise in intervillage marriages during this “bicycle craze.”

In the United States, major bicycle production began when J. K. Starley started the company that eventually became the Rover Cycle Company Ltd. He and his team developed a more efficient velocipede de pedale, which had a more powerful crankset and a chain drive that made it easier to ride. It was also lighter than previous machines, and it could be built faster to reduce production costs.

Several innovations made it possible for more people to use bicycles. In the late 19th century, they reduced crowding in urban tenements and allowed workers to commute from the suburbs to city jobs. In addition, the bicycle could travel up to three times as far on a given amount of energy than walking and up to four times as fast as a horse. It was also a more cost-effective way to move goods than a wagon or steamship.

Most modern bicycles are manufactured with a frame and fork constructed from aluminum alloys to provide strength and lightness. Alloy welding technology was developed during the 1930s, and this technology allows designers to make frames that are both stiff and compliant by manipulating the way in which the frame and fork tubes are welded together. Many manufacturers also use titanium for frame and fork tubes, but these are more expensive and less common.

A bicycle can be fitted with a basket for carrying groceries, laundry, or luggage. A child seat can be added to the rear for carrying kids, and a hitch may be added to haul a trailer for bringing home furniture or supplies. A stand is an auxiliary platform that can be mounted on the back of the bicycle for storage or to allow a rider to rest. A person can also perform cycling tricks on a bicycle, such as performing a 360° turn while seated.