A bicycle is a simple mechanical vehicle that is used for transportation. It consists of a frame, a seat, and pedals. The frame contains many parts that allow the cyclist to pedal efficiently. The seat tube is connected to the rear wheel hub and supports the rider’s seat. The seat post is also an important component of the bicycle frame and is used to support the seat.

Bicycle frames are typically constructed of steel or alloy steel. These metals are welded together to improve strength and rigidity. Bike frames can also be made of lightweight aluminum. Steel and titanium are among the strongest metals, but aluminum can wear down and break after three to five years of use. The frame should be made of a material that is both light and durable to prevent damage from the elements.

Bicycle wheels are generally made of metal. The outer frame of a bicycle consists of a triangle. It connects all of the components and provides strength and rigidity. This structure also determines how the bicycle handles. It contains front and rear triangles, which are connected by seatstays and chainstays. The frame is then fitted with a chain and front and rear wheels. The steering tube is attached to the rear wheel through the frame.

While riding a bicycle, cyclists should remember to keep their distance from cars and other vehicles. It is important to signal before turning or changing lanes. They should also use a bell or reflectors to make themselves visible to other road users. In addition, cyclists should keep at least three feet between themselves and parked vehicles. They should also use reflective materials or bells when riding at night. This will help reduce the risk of a crash.

After the 1800s, bicycle manufacturing became a major industry in Britain. The Olivier brothers pedaled a velocipede from Paris to Marseille in 1866. This event created a fervor for cycling among young people around the world. In 1867, the Olivier brothers bought a majority stake in Michaux. They also built a bigger factory. The initial models of Michaux bicycles used a serpentine-shaped malleable iron frame. Later, they switched to a diagonal frame made of wrought iron.

The bicycle is one of the most efficient forms of human-powered transportation. Studies have shown that it can transmit 99% of its energy to the wheels. It also has a very high carrying capacity. Cycling can reduce the risk of bowel or breast cancer by as much as a third, especially if you do it regularly.

Bicycles have been ridden for thousands of years, and there are numerous models available today. Some are designed for people with limited mobility.