The S-train, or S-Bahn, is a type of suburban train system found in several cities, primarily in Germany and Denmark. It connects urban areas with surrounding suburbs, providing a convenient mode of transportation for commuters. The S-train typically operates on dedicated tracks and offers frequent service, making it an efficient choice for daily travel. S-train systems are designed to integrate with other public transport options, such as buses and trams, facilitating easy transfers. They usually feature multiple lines, each identified by a letter or number, and serve various stations within the metropolitan area, enhancing accessibility for residents and visitors alike.