In the train number xx0, what does the 0 indicate?

The number "0" in the train number format often signifies the direction of travel for that particular train service. In many transit systems, including SEPTA, train designations are structured in a way that the last digit can provide insights into operational characteristics, such as which route or direction a train is taking.

For instance, if "0" represents a train traveling in a specific direction, it might indicate a local service as opposed to an express or alternative service designation. This classification helps both operators and passengers easily identify the service type, making navigation and schedule adherence more efficient. Understanding this coding allows for smoother operational management and enhances passenger awareness of train services.