Polls show that a regional clean transportation initiative has broad-based support from a majority of voters in Northeast and Mid-Atlantic states. In December 2018, a coalition of nine Northeast and Mid-Atlantic states and the District of Columbia announced plans to develop a regional low-carbon transportation policy that would cap and reduce carbon emissions from the transportation sector and invest proceeds from the program into clean, resilient, equitable transportation infrastructure and options for residents throughout the region.

This effort has generated widespread support among business leaders, scientific groups and environmentalists and climate advocates. Influential investors, companies, hospital systems, colleges, and universities have also pledged support for a regional clean transportation agreement.