(IMAGE) Technical University of Munich (TUM) Caption Progressive traffic signal systems outside of cities reduce journey times and fuel consumption up to 20 percent. A driver information system informs about the signaling ahead. Credit Andreas Haslbeck / Technische Universitaet Muenchen 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.