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Why Chicago's Express Train Isn't Really Express

Why doesn’t Chicago use its 4-track subway to its full potential? | Purple Line Express explained Chicago’s Purple Line Express promises speed—but is it really an express train? This video takes a deep dive into one of the most underutilized pieces of transit infrastructure in the United States: the North Side Main Line, a rare four-tracked rapid transit corridor. From its early 20th-century origins to the billion-dollar Red and Purple Modernization Project (RPM), this video explores how Chicago's CTA once ran a dizzying variety of express services—only to narrow it all down to one: the Purple Line Express. We’ll unpack why this rush-hour express train between Evanston and downtown Chicago doesn’t deliver the time savings you’d expect, who actually benefits from it, and how cities like New York and Philadelphia use similar infrastructure much more effectively. Whether you're a transit nerd, urban planning fan, or someone curious about public transportation, subway system design, or infrastructure investment, this is for you. Timestamps: 00:00 Intro 01:26 Explaining Express Metros 01:45 History of the North Side Mainline 04:48 Where Express Service Makes Sense 05:26 The Purple Line Loses its Express Status 05:56 Riding the Purple Line Express 06:48 Present-Day North Side Mainline Operations 08:51 Who Benefits from the Purple Line Express? 10:15 The Purple Line's Lackluster Ridership 11:45 The Case Against the Purple Line Express 12:40 RPM Project Details 13:13 Better Utilizing the North Side Mainline 15:12 Conclusion 15:42 End Credits My next video comes out June 15th (might have some delays because I'm moving to a new part of the city in the next month, but I'll keep you all updated). We'll be talking about air travel (but also trains, of course!). Subscribe so you don't miss it. Until then, catch me on my socials: Support the channel on Patreon:   / carfreekeith   Bluesky: https://bsky.app/profile/carfreekeith... Instagram:   / carfreekeith   Tik Tok:   / ucatvtkijwytctakemjajp0q   Substack: http://carfreekeith.substack.com/