A railway is a system of tracks and trains designed for transporting passengers and goods. It consists of steel rails laid on a foundation, allowing trains to travel efficiently over long distances. Railways can be found in many countries and are an essential part of public transportation and freight logistics. Trains that operate on railways can vary in size and speed, from local commuter trains to high-speed bullet trains. Railways are often considered an environmentally friendly mode of transport, as they can carry a large number of people or heavy cargo with lower energy consumption compared to road vehicles.