Evaluating Highway Traffic Safety: An Integrated Approach

Table 4

Statistical characteristics of indices using regression analysis.

Variable	Coefficient	Std. Error	t-value	p-value
SL	0.7351	0.4117	1.79	0.075
GL	1.1221	0.3577	3.14	0.002
R	-1.2816	0.5374	-2.38	0.018
SD	1.1273	0.4896	2.30	0.022
G	0.7135	0.3892	1.83	0.068
e	1.6778	0.4790	3.50	0.001
RW	-0.2010	0.2792	-0.72	0.472
PD	0.6872	0.5126	1.34	0.181
C	1.0183	0.7619	1.34	0.183
T	-0.0905	0.5944	-0.15	0.879
D	1.2769	0.6175	2.07	0.040
S	-1.4799	0.4912	-3.01	0.003
Type	-0.5654	0.3990	-1.42	0.158
Constant	0.5621	0.4515	1.24	0.214

Statistically significant indices (p value < 0.05).