Table 3: Weights of comprehensive evaluation on provincial highway.

Rule layerIndex layer
Index WeightSubindex Combined weight

Accident severity 0.47

Geometric feature 0.28Horizontal curve 0.23
Sight distance 0.21
Longitudinal slope 0.31
Lane width 0.13
Shoulder width 0.12

Traffic facility 0.15Traffic sign 0.3
Traffic marking 0.13
Guiding facility 0.2
Safety facility 0.37

Traffic environment 0.10Crosswalk 0.32
Traffic volume 0.45
Heavy vehicle ratio 0.23