Risk contributes | Jiangxi | Shaanxi | ||||
---|---|---|---|---|---|---|
SE | Odds ratio | 95 % CI | SE | Odds ratio | 95 % CI | |
Driver factors | ||||||
Gender (base: female) | ||||||
Male | 0.271 | 1.846 | (1.172, 2.864) | 0.145 | 0.621 | (0.376, 1.083) |
Age (base: old) | ||||||
Young | 0.415 | 0.663 | (0.507, 0.851) | 0.766 | 3.867 | (2.437, 4.661) |
Adult | – | – | – | 0.334 | 0.681 | (0.313, 0.946) |
Driving experience in years (base: expert) | ||||||
Novice | 0.692 | 4.787 | (2.986, 7.129) | 0.249 | 1.465 | (0.745, 1.420) |
Driver’s occupation (base: others) | ||||||
Employed workers | 0.253 | 0.565 | (0.310, 0.675) | – | – | – |
Vehicle factors | ||||||
Commercial transport (base: no) | ||||||
Yes | 1.237 | 1.688 | (1.233, 2.825) | 0.655 | 1.328 | (0.891, 2.262) |
Vehicle brake performance (base: good) | ||||||
Poor | 1.454 | 1.817 | (1.257, 2.094) | 0.826 | 1.174 | (0.907, 1.771) |
Roadway factors | ||||||
Road type (base: rural road) | ||||||
Expressway | 1.976 | 4.248 | (3.331, 4.795) | 1.652 | 2.468 | (1.762, 3.455) |
Highway specific locations (base: others) | ||||||
Sharp curve | 0.343 | 0.785 | (0.512, 1.317) | 0.376 | 0.981 | (0.637, 1.785) |
Long steep grade | 1.364 | 2.176 | (1.108, 2.766) | 0.895 | 1.364 | (0.825, 2.007) |
Tunnel | – | – | – | 1.498 | 2.176 | (1.383, 3.699) |
Bridge | 0.637 | 1.419 | (1.124, 3.006) | – | – | – |
Pavement condition (base: dry) | ||||||
Wet | 1.626 | 1.764 | (1.433, 1.859) | 5.785 | 8.463 | (4.798, 17.285) |
Environment factors | ||||||
Time of crash (base: 6 am to 8 pm) | ||||||
0 am–6 am | 0.729 | 0.907 | (0.561, 0.976) | 0.770 | 1.418 | (1.117, 1.990) |
Seasons (base: autumn) | ||||||
Summer | – | – | – | 0.664 | 0.847 | (0.543, 1.087) |
Winter | 0.881 | 1.465 | (1.043, 2.557) | 1.083 | 0.764 | (0.626, 1.655) |
Weather condition (base: fine) | ||||||
Adverse | 0.260 | 0.518 | (0.284, 0.809) | 0.785 | 0.988 | (0.438, 1.097) |
Visibility condition (base: good) | ||||||
Poor | 1.429 | 1.376 | (0.877, 1.740) | 1.178 | 1.496 | (1.133, 2.466) |
Traffic violations | ||||||
Disregarding the speed limits (base: not speeding) | ||||||
Speeding | 1.465 | 2.349 | (1.875, 3.941) | 1.625 | 2.137 | (1.339, 4.081) |
Overloading condition (base: not overloading) | ||||||
Overloading | 1.681 | 0.848 | (0.464, 1.223) | 1.464 | 1.209 | (1.177, 1.699) |
Crash characteristics | ||||||
Injury outcome (base: slight injury) | ||||||
Moderate injury | 0.313 | 0.686 | (0.416, 0.988) | 0.117 | 0.464 | (0.374, 0.628) |
Serious injury | 0.744 | 1.337 | (0.754, 1.767) | 0.086 | 0.752 | (0.691, 1.476) |
Fatal injury | 1.163 | 1.559 | (1.145, 2.386) | 0.439 | 1.767 | (1.422, 2.897) |
Type of collision (base: others) | ||||||
Head-on collision | 0.176 | 1.394 | (0.933, 2.498) | 0.460 | 1.128 | (0.866, 2.743) |
Sideswipes | 0.698 | 1.765 | (1.174, 3.992) | 0.533 | 1.665 | (1.439, 3.078) |
Rear-end collision | 0.375 | 1.567 | (1.044, 2.363) | 1.176 | 2.061 | (1.414, 3.665) |
Runoff | – | – | – | 0.421 | 0.764 | (0.297, 1.170) |
Collision partner (base: two trucks) | ||||||
A single truck | 0.706 | 0.911 | (0.665, 1.127) | 1.142 | 1.869 | (1.394, 2.527) |
A truck and a passenger vehicle | 1.163 | 1.455 | (0.896, 1.772) | 1.068 | 1.241 | (1.076, 1.718) |
Multiple vehicles | 1.467 | 1.893 | (1.226, 2.674) | 1.383 | 2.057 | (0.896, 2.963) |
Truck(s) and vulnerable road user(s) | 0.658 | 0.896 | (0.623, 0.972) | 0.764 | 0.883 | (0.653, 1.450) |
Model estimation measures | ||||||
Percentage | 84.36 | 82.55 | ||||
ROC | 0.877 | 0.863 | ||||
N | 5447 | 3721 |