Research Article
Identification of Driver Distraction Based on SHRP2 Naturalistic Driving Study
Table 2
Ranking table of important feature indicators.
| Importance ranking | Characteristic | Signal | Importance ranking | Characteristic | Signal |
| 1 | Mean of velocity | V_mean | 12 | Residuals sum of squares of velocity | V_ess | 2 | Mean of desired reaction time | DRT_mean | 13 | Mean of longitudinal acceleration | Accel_x_mean | 3 | Mean of headway distance | HWD_mean | 14 | Regression of slope of desired reaction time | DRT_sr | 4 | Maximum of relative velocity | Rel_V_mean | 15 | Standard deviation of longitudinal acceleration | Accel_x_std | 5 | Standard deviation of steering wheel rate | SWR_std | 16 | Regression of slope of relative velocity | Rel_V_sr | 6 | Regression of slope of lateral acceleration | Accel_y_sr | 17 | Mean of steering wheel rate | SWR_mean | 7 | Regression of slope of velocity | V_sr | 18 | Mean of lateral acceleration | Accel_y_mean | 8 | Steering rate entropy | SRE | 19 | Regression of slope of longitudinal acceleration | Accel_x_sr | 9 | Standard deviation of headway distance | HWD_std | 20 | Residuals sum of squares of steering wheel rate | SWR_ess | 10 | Residuals sum of squares of headway distance | HWD_ess | 21 | Residuals sum of squares of relative velocity | Rel_V_ess | 11 | Maximum of lateral acceleration | Accl_y_max | — | — | — |
|
|