Can regional transportation and land-use planning achieve deep reductions in GHG emissions from vehicles?

摘要: Abstract The Intergovernmental Panel on Climate Change estimates that greenhouse gas emissions (GHG) must be cut 40–70% by 2050 to prevent a greater than 2 °Celsius increase in the global mean temperature; threshold may avoid most severe climate change impacts. Transportation accounts for about one third of GHG United States; reducing these should therefore an important part any strategy aimed at meeting IPCC targets. Prior studies find improvements vehicle energy efficiency or decarbonization transportation fuel supply would required sector achieve Strategies could implemented regional planning organizations are generally found have only modest reduction potential. In this study we challenge findings. We evaluate what it take deep emission reductions from without advances and beyond is currently expected under existing regulations market expectations. find, based modeling conducted Albuquerque, New Mexico metropolitan area possible able Achieving requires changes policy land-use go far planned Albuquerque likely anywhere else States.