Critical Factors Analysis of Severe Traffic Accidents Based on Bayesian Network in China

Table 5

The weighted grey correlation degree of multivehicle traffic accidents’ factors.

Categories	Accident index	Number of accidents	Number of deaths	Number of injuries	Mean value
Driver factors	Overspeed	0.847	0.669	0.709	0.741
	Overload	0.617	0.721	0.750	0.702
	Misoperation	0.637	0.721	0.750	0.619
	Lane use underserved	0.814	0.659	0.641	0.705
	Fatigue driving	0.617	0.761	0.809	0.729
Vehicle factors	Poor braking	0.828	0.665	0.701	0.731
	Commuter bus	0.900	0.727	0.783	0.803
	Normal bus	0.837	0.687	0.718	0.747
	Heavy track	0.794	0.779	0.807	0.793
	Cross the line moving	0.873	0.658	0.707	0.746
	Parking	0.520	0.547	0.569	0.545
Road factors	Located in the construction section	0.639	0.706	0.754	0.677
	Located in the nonstraight sections	0.735	0.730	0.756	0.715
	Road without physical separation	0.924	0.691	0.748	0.772
Environment factors	Daytime	0.775	0.908	0.807	0.914
	Workday	0.794	0.686	0.706	0.678
	Bad weather	0.820	0.746	0.725	0.715
	Low visibility	0.797	0.780	0.746	0.769