Safety-Based Optimization Model for Highway Horizontal Alignment Design

Table 1

Estimation results of the prediction model considering driving failure probability.

Coefficients	Estimated value	Standard error	p-value	Regression coefficients
Intercept	−9.7771	2.1960	<.0001	Deviance = 88.8588
R	−0.0021	0.0008	0.0115	Deviance/DF = 1.1848
Lim	0.0268	0.0146	0.0664	Scaled deviance = 81.0000
L	0.6306	0.2148	0.0033	Scaled deviance /DF = 1.0800
AADT	0.7630	0.1726	<.0001	Pearson chi-Square = 88.8588
Pnc	1.5164	0.6827	0.0264	Pearson chi-Square/DF = 1.18
L	0.6579	0.1937	0.0007	Log Likelihood = −118.6843
AADT	0.5615	0.1645	0.0006	AIC = 247.3686
Pnc	2.0149	0.6036	0.0008

AIC in Table 1 denotes the Akaike Information Criterion.