The experiment indicates the possibility of using driving simulators for evaluation purposes. This implies that studies of the benefits can be performed with higher accuracy regarding repeatability and evaluation testing of active safety functions can be made more cost efficient and without jeopardizing safety of involved driver and other road-users.
The experiment was designed for studying the effects of ESC presence in critical situations. To cover both roll and yaw instability, a closing curve and moose scenarios, were included in the experiment. Due to the limitation to 16 test subjects, a within group design was preferred, i.e. an experimental design where all test subjects would drive both with and without ESC activated, experiencing both driving scenarios with both conditions.
This study was conducted with professional truck drivers that must be taken for highly skilled drivers which most likely makes it harder to design realistic driving scenarios where the driver has a 'loss of control' situation compared to passenger car drivers used in similar ESC simulator experiments. Overall, the subjective criticality estimates are rather low, and 'potential loss of control' was reached only in 28 per cent of curve situations and 22 per cent of moose situations. In future experiments, the scenarios should be tuned more aggressively.
N. Dela, L. Laine, F. Bruzelius, H. Sehammar, L. Renner, G. Markkula and A. Karlsson. A pilot evaluation of using large movement driving simulator experiments to study driver behaviour influence on active safety systems for commercial heavy vehicles. Proccedings of 21st International Symposium on Dynamics of Vehicles on Roads and Tracks (IAVSD'09). Stockholm, Sweden, 2009.