Crash Prediction and Risk Evaluation Based on Traffic Analysis Zones

Table 4

Estimation results of the final regression model.

Parameter	Estimate coefficient	Std. error	95% Wald confidence interval		Hypothesis test
			Lower	Upper	Wald chi-square	df	𝑃 value
(Intercept)	2.952	.2543	2.454	3.450	134.805	1	<.0001
LENGTH	.019	.0068	.006	.032	7.666	1	.006
ADT	.004	.0002	.003	.004	236.843	1	<.0001
FFS	−.019	.0052	−.029	−.009	14.087	1	<.0001
HIGH	−1.009	.3018	−1.60	−.417	11.178	1	.001
RETAIL	1.226	.2351	.765	1.686	27.182	1	<.0001
TOTALSERVI	.391	.1736	.051	.731	5.081	1	.024
HSENROLL	.296	.1470	.008	.584	4.062	1	.044
POP	.372	.0488	.276	.467	57.998	1	<.0001
1/𝛼	1.025	0.054	.925	1.136