Table 5.
Analysis of braking behavior indicators and vehicle movement indicators.
| Experimental Scenario | Drivers | Earliest Braking Time(s) | Maximum Brake Pedal Depth | Mean Velocity (km/h) | SD of Vehicle Velocity (km/h) | Lateral Acceleration (m/s2) |
|---|---|---|---|---|---|---|
| Scenario 1 | Older | 7.54 | 5.46 | 33.12 | 13.41 | 0.063 |
| Younger | 6.38 | 5.09 | 24.82 | 12.80 | 0.088 | |
| Sig. | 0.200 | 0.560 | 0.013 * | 0.440 | 0.035 * | |
| Scenario 2 | Older | 6.67 | 3.61 | 19.50 | 6.14 | 0.66 |
| Younger | 4.60 | 3.31 | 15.82 | 6.64 | 0.52 | |
| Sig. | 0.152 | 0.326 | 0.007 * | 0.278 | 0.056 | |
| Scenario 3 | Older | 6.42 | 5.65 | 36.97 | 14.59 | 0.16 |
| Younger | 4.36 | 7.27 | 34.97 | 10.95 | 0.06 | |
| Sig. | 0.083 | 0.458 | 0.007 ** | 0.000 ** | 0.018 * | |
| Scenario 4 | Older | 6.00 | 4.84 | 20.05 | 6.46 | 0.24 |
| Younger | 3.67 | 3.58 | 15.74 | 5.50 | 0.41 | |
| Sig. | 0.043 * | 0.207 | 0.000 ** | 0.158 | 0.026 * | |
| Scenario 5 | Older | 5.28 | 3.85 | 33.76 | 9.47 | 0.21 |
| Younger | 3.00 | 4.41 | 30.17 | 12.16 | 0.06 | |
| Sig. | 0.194 | 0.704 | 0.215 | 0.015 * | 0.013 * |
Note: The maximum value of the simulator brake pedal opening in this study was 20, and the value when the brake pedal was pressed to the limit position was calibrated to 20; * indicates significant difference at 0.05 level, and ** indicates significant difference at 0.01 level.