A transit system is a network designed to move people and goods from one location to another within a specific area. This can include various modes of transportation such as buses, trains, subways, and ferries. Transit systems are essential for urban planning, helping to reduce traffic congestion and promote efficient travel. Many cities invest in their transit systems to improve accessibility and sustainability. A well-functioning transit system can enhance economic growth by connecting communities and providing residents with reliable transportation options. Examples of transit systems include the New York City Subway, London Underground, and San Francisco Bay Area Rapid Transit (BART).