Railway systems are networks of trains and tracks that transport people and goods from one place to another. They consist of various components, including locomotives, railcars, and stations. Trains run on rails laid on tracks, which are usually made of steel. This system is efficient for moving large amounts of cargo and passengers over long distances. In many countries, railway systems are a vital part of public transportation. They help reduce traffic congestion and pollution by providing an alternative to cars. Major cities often have subway or light rail systems that connect neighborhoods, making it easier for people to commute and travel.