This study compared driver performance data from a simulated roadcourse in the DOT/FHWA Highway Simulator (HYSIM) to data gathered on actual real-world roadways. Thirty-two subjects from the general driving population participated in the study. Dependent variables were: sign detection and recognition distances, speed, accelerator position changes and steering wheel reversals. A high correspondance between real-world and HYSIM data sets indicated which simulator measures are valid; conversely, a low correspondence pointed to design and operational parameters which require enhancement and/or adjustment to improve HYSIM's capability to accurately simulate real-world driving. Study results show that, in general, the HYSIN measures tested accurately simulate real-world conditions and simulated data can be safely generalized to real-world situations. However, there are important system contraints which must be accomodated in the experimental design for studies conducted on the simulator. Those problem areas where enhancement and/or system modifications are required or desirable are identified and recommendations regarding solutions to these problems are provided.
Samenvatting