Transportation Resources

All transportation resources

Report

The Role of Food Crops as Transportation Fuel

Concerns about the use of food crops to make biofuels have been growing due to a sharp increase in both food and fuel prices, along with studies suggesting that production of these fuels may increase global warming pollution.
Report
Tractor-trailer

Technology Options for Tractor-Trailers

Fact sheet describing some of the technologies available today that can be installed on trucks, or specified as options on new trucks, to improve fuel efficiency through better aerodynamics and reduced rolling resistance.
Report

Jobs, Energy, and Fuel Economy

We estimated the effect of moving existing technologies into cars and trucks with the modest goal of reaching a fleetwide average of 35 miles per gallon (mpg) by 2018.
Report
Back view of a fleet of vehicles parked in a car sales lot

Automaker Rankings 2007

This analysis uses sales and global warming and smog-forming emissions data to rate the bottom-line environmental performance of eight companies.
Report

Fuel Economy Fraud

Fuel economy standards have remained essentially unchanged over the past 20 years—and automakers have increasingly exploited loopholes in Congressional and regulatory language.