Vehicle Emissions and Fuel Economy Standards

What are the federal emissions and fuel economy standards for current and future on-road vehicles? Have any related emissions and fuel regulations been passed recently? Corporate Average Fuel Economy (CAFE) standards and the associated greenhouse gas ...

Maps and Data About Alternative Transportation

Where can I find statistics, maps, and projections related to alternative fuels, advanced vehicles, and infrastructure? The Alternative Fuels Data Center (AFDC) Maps and Data website is a comprehensive resource for current and historical statistics re...

State Information About Alternative Transportation

Where can I find information specific to alternative fuel and advanced vehicles in my state? The Alternative Fuels Data Center (AFDC) State Information portal, one of the many resources found on the AFDC Tools page, is a great source for state-specifi...

Testing and Improving Vehicle Fuel Economy

How are vehicle fuel economy ratings determined? What factors impact fuel economy? Vehicle fuel economy is tested under controlled conditions using a standardized test procedure. Original equipment manufacturers (OEMs) are required by federal law to t...

Improving Transportation System Efficiency

What strategies are used to reduce vehicle miles traveled (VMT) and improve overall transportation system efficiency? VMT is a measure used in the transportation-planning community and elsewhere to report the number of miles that motor vehicles are dr...