Manufactured by Motive Power Inc (MPI), the MP36PH is a commuter service locomotive that is utilized by regional transit agencies all across the United States and Canada. In Chicago, IL, these distinct locomotives operate on Metra train lines in “push-pull” service, running hourly commuter bi-level trains in and out of the downtown stations to serve the approximately 300,000 daily riders that use it to go to and from the surrounding suburbs.