Train lines are the routes that trains follow to transport passengers and goods from one location to another. These lines are typically made of steel tracks laid on a foundation of gravel or concrete, allowing trains to travel efficiently. Train lines can connect cities, towns, and rural areas, making them an essential part of public transportation systems. In many countries, train lines are operated by various companies or government agencies. They can be categorized into different types, such as commuter trains, freight trains, and high-speed trains. Each type serves a specific purpose, catering to the needs of travelers and businesses alike.