A Washington Post report warns The U.S. is choking on its traffic and it’s going to get worse. Building additional roads to accommodate the expected population growth, particularly in already thickly settled areas is a fool's errand.  Information technologies will help, but only up to a point.
Say you’re commuting in from Manassas: Your computer looks at your calendar, sees that it’s a regular commute day and that the weather’s going to be terrible so traffic is going to be bad, and there’s already been a big crash on I-66,” he said. “So, your computer goes out and finds the VRE train schedule and the bus schedule, and here’s the Metrorail schedule and where it drops you off. So, at 5:45, you’re shaved and showered and your computer presents you with your travel options for today.
Yes, that helps, provided there's a feeder bus that runs to the station, and dependable service on the commuter railroad.  Well, maybe the suburban trains, unlike the city cars, are a subsidy to the middle class or upper-middle class.  But we'll not see an end to dangerous, jammed roads, until the authorities require special movement permits for any 53 foot trailer.  The 55 mph speed limit and citizens' band radio gave the motor carriers this image of yeomen of the road that is wholly undeserved.

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