A street running train is a train which runs on a track built on public streets. The rails are embedded in the roadway, and the train shares the street with other users, such as pedestrians, cars and cyclists, thus often being referred to as running in mixed traffic. Tram and light rail systems frequently run on streets, with light rail lines typically separated from other traffic.
For safety, street running trains travel more slowly than trains on dedicated rights-of-way. Needing to share the right-of-way with motor vehicles can cause delays and pose a safety risk.
