It would be hard to argue that designers intended the linear parking lots that many of our city freeways have become. They simply did not understand the nature of induced demand: build it and they will come -- at which point you'll learn that you didn't build it big enough....

A few weeks ago I attended a Chicago neighborhood meeting for residents of the wards affected by the end-of-life of a nearby overpass, a stretch of roadway that runs about 1,000 feet and allows motorists traveling north-south to vault over a tricky intersection caused by one of the city's diagonal...