The Frontier Group, in partnership with Environment America Research and Policy Center and the U.S. Public Interest Research Group (PIRG), released the report, "Fifty Steps Toward Carbon-Free Transportation: Rethinking U.S. Transportation Policy to Fight Global Warming."  The authors contend that in order to meet the obligations of the Paris Climate Agreement and prevent the worst impacts of global warming, the U.S. will have to virtually eliminate carbon pollution by mid-century.  They note that our transportation system contributes significantly to climate change because cars, trucks, and other vehicles now represent the nation's largest source of carbon pollution.  They further note that the U.S. produces more transportation carbon pollution per capita than any other major industrialized nation.

New technologies and emerging social trends – from electric vehicles to interest in walkable and bike-friendly communities – create opportunities to achieve a zero-carbon transportation system.  The report argues that in order to move toward a carbon-free transportation system, America must reform transportation policy to empower cities and states to implement effective solutions, including increased investment in and promotion of walking and bicycling for transportation.