August 20, 2013, 7am PDT
With growth ten years ahead of estimates, Boston's Innovation District is in need of some fresh ideas to help stave of death by traffic asphyxiation. Local roads and mass transit are already stretched to capacity during the evening commute.
March 25, 2013, 6am PDT
Faced with paralyzing gridlock, North America's fourth-largest city is studying several potential solutions for easing congestion - including traffic lights that think for themselves.
January 5, 2011, 7am PST
MacDill Air Force Base has created a snarl of traffic in Tampa. Transportation planners are at a loss to find a solution so far.
October 17, 2009, 7am PDT
When it hosts the 2010 Winter Olympics next year, Vancouver will need to clear more than 30,000 vehicles off its roads everyday to avoid total gridlock. Doing so will require much cooperation from locals.