A train system is a network of vehicles that run on tracks to transport passengers and goods from one location to another. Trains are powered by various sources, including electricity, diesel, or steam, and they operate on designated routes. The system includes components like railway stations, tracks, and signals to ensure safe and efficient travel. Train systems can vary in size and complexity, from local commuter trains to long-distance freight services. They are an essential part of public transportation in many countries, providing a reliable and eco-friendly alternative to cars and buses. Major train systems include Amtrak in the United States and Eurostar in Europe.