Vehicles -- Fuel Savings Green Light (IMAGE) DOE/Oak Ridge National Laboratory Caption A preliminary study by ORNL and GRIDSMART shows promise of a new system to keep trucks moving through intersections and reduce fuel consumption. Credit Thomas Karnowski/Oak Ridge National Laboratory, US Dept. of Energy Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.