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

Table 6

The conditional probability of the number of deaths for the single-vehicle traffic accident.

Factor variables		Result variables
		Number of deaths			Number of injuries
		10  number of deaths 19	20  number of deaths 29	Number of deaths 30	10  number of deaths 19	20  number of deaths 29	Number of deaths 30
Overspeed	Yes	0.5368	0.3880	0.0751	0.2022	0.6356	0.1622
	No	0.3334	0.6265	0.0401	0.2045	0.6312	0.1643
Commuter bus involved	Yes	0.3996	0.4987	0.1016	0.1943	0.1992	0.6065
	No	0.4756	0.3657	0.1587	0.6383	0.3037	0.0543
Straight alignment	Yes	0.5384	0.2224	0.2392	0.2009	0.6411	0.1579
	No	0.5573	0.2133	0.2294	0.2049	0.6418	0.1533
Physical separation	Yes	0.4808	0.2240	0.2693	0.1882	0.6376	0.1742
	No	0.5345	0.2499	0.2416	0.1986	0.6320	0.1694
Slippery pavement	Yes	0.5367	0.2226	0.2407	0.1964	0.6098	0.1937
	No	0.5269	0.2264	0.2467	0.1991	0.6212	0.1796
Occurring period	Day	0.5663	0.2108	0.2229	0.3567	0.4974	0.1459
	Night	0.4571	0.2588	0.2840	0.1341	0.4595	0.4064
Poor weather	Yes	0.4469	0.2583	0.2949	0.1890	0.6042	0.2068
	No	0.5656	0.2117	0.2227	0.2254	0.7225	0.0521
Visibility well	Yes	0.5078	0.2363	0.2558	0.1889	0.6202	0.1910
	No	0.5512	0.2173	0.2315	0.2088	0.6761	0.1150