Erick Guerra is Assistant Professor of City and Regional Planning at the University of Pennsylvania, where he teaches courses in transportation planning and quantitative planning methods. He has published a dozen articles on the relationship between transportation infrastructure, land use, urban development, and travel behavior.
The world’s largest public works investment visible from space, the Interstate Highway System and the hundreds of thousands of miles of supporting roadways, are frequently hailed as a marvel and triumph of engineering. President Eisenhower’s 1956 Interstate Highway Act is often praised as a model of successful bipartisanship.
Today, the extensive damage wreaked by the creation of the highway system and the ills of car dependency are more widely acknowledged.
Cities across the globe have been designed with a primary goal of moving people around quickly—and the costs are becoming ever more apparent. The consequences are measured in smoggy air basins, sprawling suburbs, unsafe pedestrian environments, and despite hundreds of billions of dollars in investments, a failure to stem traffic congestion. Every year our current transportation paradigm generates more than 1.25 million fatalities directly through traffic collisions.