Building occupancy (IMAGE) DOE/Oak Ridge National Laboratory Caption Using strategically placed traffic sensors, shown as gold spheres, the team assigned vehicle occupants to nearby buildings to estimate their populations and energy consumption. In the section of the city pictured here, 100 individuals, shown as purple spheres, are allocated to buildings adjacent to intersections. Credit Andy Berres/ORNL, U.S. Dept. of Energy Usage Restrictions n/a License Original 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.