A Car Tested under a Rain Simulator (IMAGE) European Geosciences Union Caption An individual in the car adjusts the wiper speed manually depending on the windscreen visibility. The visibility is related to the intensity of the rain set up by the rain simulator, a machine that uses a sprinkler irrigation system with adjustable nozzles to simulate light to heavy rain. Credit Daniel Fitzner, <a target="_blank"href="http://www.ikg.uni-hannover.de">www.ikg.uni-hannover.de</a> 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.