What is the route pairing number for the Chestnut Hill West Line?

The route pairing number for the Chestnut Hill West Line is identified as 8. This number is part of a system used to categorize different train lines and their respective routes within the SEPTA network. In this context, route pairing numbers help streamline operations and assist conductors and engineers in identifying specific lines quickly. The selection of route numbers is based on SEPTA's internal definitions and organizational structure, ensuring efficient identification and referencing of the various transit lines. Thus, understanding these classifications is crucial for personnel operating within the system.