Abstract

The purpose of the present study was conducted to determine the relative effectiveness of various front-to-rear-end collision warning systems(collision warnings were presented through the systems configured Visual Only, Tone Only, Voice Only, Visual+Tone, and Visual + Voice) based on drivers' driving perfbrmances(i.e,, collision avoidance behavior) and their subjective evaluation on the systems. Driving simulation was employed to simulate front-to-rear-end collision situation and to measure the drivers' performance. The results of the experiment are as followings. First, compared with control condition, any type of collision warning system appeared to be helpful to avoid collision. Second, among the systems, Voice Only system induced better collision avoidance performances than other types. Third, drivers subjectively evaluated that the Voice Only system required less time to process the information provided by the system than other types. Finally, iir^lications of the study was discussed.