At Chicago's busy Ogilvie Transportation Center, Metra F40PH locomotives 159, 163, 139, and 176 await their respective runs on the Union Pacific lines. These locomotives are part of Metra's long-running fleet of EMD F40PH-series engines, a 3,000-horsepower diesel design introduced in the late 1970s that became the backbone of Chicago commuter rail service for decades. At Ogilvie—one of the busiest commuter terminals in North America with more than 100,000 daily Metra passengers—trains powered by these engines regularly roll beneath the downtown skyline as they begin or end runs to suburban destinations such as Elburn, Harvard, McHenry, and Kenosha. Locomotive 159, named Village of Mount Prospect, 163, named City of Elmhurst, 139, named Village of River Forest, and 176 continue the tradition of durable F40PH service, their distinctive rumble and classic Metra paint schemes remaining a familiar sight for railfans and commuters alike along the historic former Chicago and North Western routes that converge at Ogilvie.