Vehicle pollution accounts for a significant portion of global greenhouse gas emissions, including nearly one third of emissions in the United States. When designed effectively, policies to address vehicle pollution can incentivize drivers to adopt more efficient driving habits and choose cleaner vehicles and fuels.
How Do US Passenger Vehicle Fuel Economy Standards Affect Purchases of New and Used Vehicles?
Over the past decade, tightening vehicle fuel economy standards has reduced new vehicle sales and modestly increased the standards’ short-term costs.
The Role of State Policies under Federal Light-Duty Vehicle Greenhouse Gas Emissions Standards
Federal and state policies that regulate vehicle fuel economy and GHG emissions can overlap and interfere with one another. But carefully constructed state policies can complement federal policies and reduce GHG emissions, air pollution, and congestion.
Bicycle Infrastructure and Traffic Congestion: Evidence from DC’s Capital Bikeshare
Urban bike sharing is gaining popularity for its purported health, environmental, and traffic congestion benefits. Evidence from Washington, DC, one of the most congested US cities, suggests that the Capital Bikeshare program reduces traffic congestion.