Zachary M. Schrag, Columbia University The term “urban mass transit” generally refers to scheduled intra-city service on a fixed route in shared vehicles. Even this definition embraces horse-drawn omnibuses and streetcars, cable cars, electric streetcars and trolley coaches, gasoline and diesel buses, underground and above-ground rail rapid transit, ferries, and some commuter rail service. In … Continue reading Urban Mass Transit In The United States