In New York City, travel time and cost more strongly predict social media connectedness than geographical distance, according to a recent working paper from the National Bureau of Economic Research.
An updated collection of recent reports, research and analysis relating to Amtrak, rail transit and Positive Train Control.
2011 study from the University of Toronto and London School of Economics on the relationship between infrastructure and automotive traffic levels.
Harvard professor Gómez-Ibáñez talks about research on subjects as diverse as transit in the developing world, electric vehicles in urban areas and high-speed rail.
2014 study by the U.N. Intergovernmental Panel on Climate Change on ways that nations, states and municipalities can act to limit or reverse trends in CO2 emissions.
2012 roundup of recent research on issues related to the major commuting modes in the United States, including cars, public transit, bicycles, and walking.
2012 paper by the Federal Reserve Bank of San Francisco for the National Bureau of Economic Research on the economic effects of spending on highway projects.
2011 study in Psychological Science on the connection between progressive taxation and the happiness of citizens around the world.
2011 report by the Brookings Institute's Metropolitan Policy Program on the transit options of U.S. households without private vehicles.
2011 study by the Brookings Institution on how well U.S. public-transportation networks line up with the needs of workers and commuters.