Driver's Risk Field (DRF) (IMAGE) Delft University of Technology Caption The two-dimensional Driver's Risk Field (DRF) was tested in seven scenarios Credit TU Delft Usage Restrictions The picture can only be used in direct relation/reference to this research 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.