In response to state laws and federal incentives, cities and metropolitan areas across the country are engaged in “sustainability planning” aimed at reducing greenhouse gas emissions. In many if not most cases, this planning seeks to reshape urban areas to reduce the amount of driving people do. In general, this means increasing urban population densities and in particular replacing low-density neighborhoods in transit corridors with dense, mixed-use developments.
Topic:
Climate Change, Development, Energy Policy, Infrastructure, and Governance
Over the past four decades, American cities have spent close to $100 billion constructing rail transit systems, and many billions more operating those systems. The agencies that spend taxpayer dollars building these lines almost invariably call them successful even when they go an average of 40 percent over budget and, in many cases, carry an insignificant number of riders. The people who rarely or never ride these lines but still have to pay for them should ask, “How do you define success?"
Proponents of compact development argue that rebuilding American urban areas to higher densities is vital for reducing greenhouse gas emissions. Compact city policies call for reducing driving by housing a higher percentage of people in multi-family and mixed-use developments, reducing the average lot sizes of single-family homes, redesigning streets and neighborhoods to be more pedestrian friendly, concentrating jobs in selected areas, and spending more on mass transit and less on highways.