A bus is a large vehicle designed to carry many passengers at once. It usually runs on fixed routes and stops at designated places, making it a convenient way to travel around cities and towns. Buses can be found in various forms, including city buses, school buses, and long-distance coaches, each serving different purposes. Riding a bus is often an affordable option compared to driving a car. Many people use buses to commute to work or school, reducing traffic congestion and pollution. In some places, buses are part of a larger public transportation system that may include trains and subways, helping to connect communities and promote sustainable travel.