A motorcycle (or motorbike) is a vehicle used to transport people from one place to another. It does not have 4 wheels like a car. It has 2 wheels like a bicycle, and it has a motor like a car. A motorcycle is usually driven by one person. A passenger can also ride on the back of the motorcycle. Some motorcycles have a sidecar that can carry another passenger.
In 1901, the first successful motorcycle was made by the company called "Indian motorcycles" in Springfield, Massachusetts. Since then, many other companies have made them. Major manufacturers include Honda, Suzuki, Yamaha. A well known American manufacturer of motorcycles is Harley-Davidson.
Since motorcycles are lighter than almost all cars, they can accelerate more quickly. But it also makes them not as safe as cars, because they do not have a protecting chassis around them like cars. Very often motorcycle riders are injured heavily in accidents. Motorcycle riders should wear a helmet and other protective clothing like shoes and gloves, of which some have armor. This special clothing may reduce the rider's injuries in an accident. Motorcycles also do not protect riders against wind and rain. That makes it difficult to drive in winter or during bad weather.
In poor countries, motorcycles are used by many as a cheap method of transportation. Many people who do not have the money to buy a car can afford a small motorcycle. In rich countries, large powerful motorcycles are used more as a hobby or sport.