Variable	EN-EX Upstream				EX-EN				EN-EX Downstream
Variable	Coefficient	Std. Error	t-statistic	p-value	Coefficient	Std. Error	t-statistic	p-value	Coefficient	Std. Error	t-statistic	p-value
Constant	3.126	0.540	5.79	0.00	1.607	0.321	5.01	0.00	2.043	0.548	3.73	0.00
CRASHRATE (EN-EX)	-	-	-	-	−0.146	0.085	−1.71	0.087	-	-	-	-
TLANES
SHOULDER	−0.128	0.033	0.03	0.00	−0.062	0.015	−4.19	0.00	−0.049	0.028	−1.73	0.084
MEDIAN	−0.076	0.016	−4.87	0.00	−0.040	0.011	−3.61	0.00	−0.060	0.019	−3.25	0.001
AADT					0.000002	0.0000007	3.03	0.002
GRADE					0.127	0.0723	1.75	0.080
RADIUS					−0.00006	0.000019	−3.20	0.001
LENGTH	−0.00008	0.00003	−2.75	0.006
RMSE	0.368				0.239				0.395
McElro’s R²	0.545