Flow-Control Equipment (IMAGE) Georgia Institute of Technology Research News Caption Aerodynamic improvements on truck trailers -- such as rounded corners -- coupled with pneumatic controls for blowing air from slots, help reduce drag and improve fuel economy for heavy trucks. Credit Courtesy: Robert Englar 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.