I can’t believe I didn’t notice Radical Cartography’s Urban Mass Transit Systems of North America before. This map plots the mass transit systems — subways, light rail, busways, whatever — of U.S., Canadian and Mexican cities circa 2005 on the same scale. Direct link to the PDF. Via The Map Scroll, where Chachy observes the following: “You can also really pick out the slackers in this sort of direct comparison — I’m looking at you, Detroit and Seattle.”

Previously: City Income Donuts; Radical Cartography; Scale Subway Systems.