2025 Volume 27 Issue 2 Pages 61-70
In long period driving using a Level 2 driver assistance system, the issues of low arousal due to continuous low stimulation and dependence on the system have become apparent. In order to solve these problems, we believe that it is effective to enable drivers to enjoy driving even during driving assistance, and we have proposed an index called “driver excitement” as a measure of this feeling. The proposed method is based on combining the MOS evaluation and the SD method, but the results in the previous report had a problem that there was a difference between the MOS evaluation scores and the estimated values by our method. In this paper, we re-propose a modified estimation formula and confirm it in a Level 2 automated driving experiment over a Metropolitan Expressway using a driving simulator. The result is that the accuracy of the estimated has improved. We also examine the number of adjective pairs required for the SD method in this estimation method and propose a simple estimation method which uses only adjective pairs of the evaluation factor.
