The U. S. Department of Transportation's (U.S.DOT) Research and Innovative Technology Administration's (RITA) John A. Volpe National Transportation Systems Center (Volpe Center), under the direction of the U.S.DOT Federal Railroad Administration (FRA) Office of Research and Development (R&D), conducteda research study focused on collecting and analyzing data related to driver behavior at or on approach to highway-rail grade crossings.VolpeCenter reviewedand coded 4,215 grade crossing eventsinvolving light vehicle drivers collected during a recent field operational test of vehicle safety systems.The data collected for each grade crossing included informationabout drivers' activities, driver and vehicle performance, driving environment, and vehicle location at or on approach tohighway-rail grade crossings.