![]() Building upon existing programs (e.g., the Regional Greenhouse Gas Initiative), 12 states and the District of Columbia are currently in discussions to create a program called the Transportation Climate Initiative (TCI). In the Northeast and Mid-Atlantic states, transportation accounts for an even greater share (34.5%) of CO 2 equivalent emissions. In the USA, the transportation sector produces the largest share (28.2%) of greenhouse gas (GHG) emissions. We conclude that investing proceeds in active mobility infrastructure is a cost-effective way of reducing mortality, especially in urban areas, providing a strong motivation for investment in modernization of the transportation system and further evidence of the health co-benefits of climate action. Under all scenarios considered, the monetized benefits from deaths avoided substantially exceed the direct infrastructure costs of investment. ![]() We find that even for the scenario with the smallest investment in active mobility, when it is fully implemented, TCI would result in hundreds of fewer deaths per year across the region, with monetized benefits in the billions of dollars annually. We conduct these analyses for all 378 counties in the TCI region. Using outputs from an investment scenario model and the World Health Organization Health Economic Assessment Tool methodology, we estimate the mortality implications of increased active mobility and their monetized value for three different investment allocation scenarios considered by TCI policymakers. The Transportation Climate Initiative (TCI), a partnership of 12 states and the District of Columbia currently under development, would implement a cap-and-invest program to reduce transportation sector emissions across the Northeast and Mid-Atlantic region, including substantial investment in cycling and pedestrian infrastructure. The transportation sector is now the primary contributor to greenhouse gas emissions in the USA.
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