Abstract:
This study evaluates transportation supply and performance indicators for 13 metropolitan areas to test the hypothesis that a smart growth transportation system--one that features a more dense and well-connected network of streets, shorter block sizes, and extensive transit service--will result in fewer vehicle trips and miles of travel, less congestion, and decreased vehicle emissions as compared to a conventional suburban transportation system. The study also evaluates changes in traffic congestion over time for a set of metropolitan regions with stable or declining population, growing urban area, and increased road supply.