Impact of Road Environment on Drivers’ Preference to Merging Location Selection in Freeway Work Zone Merging Areas

Table 5

Logistic regression model estimation results for Location II.

Merging area: Location II		B	S.E.	Wald	DF	Sig.	Exp (B)	95% confidence interval
								Lower bound	Upper bound
Intercept	−3.662	1.262	8.426	1	0.004	—	—	—
Road conditions	Road alignment	1.579	0.911	3.003	1	0.083	4.851	0.813	28.942
	Number of closed lanes	0.896	0.988	0.823	1	0.036	1.408	0.059	2.829
	Length of closed lanes	0	—	—	0	—	—	—.	—
Road alignment conditions	Straight line segment	0.644	0.858	0.564	1	0.453	1.904	0.355	10.226
	Horizontal curve segment	0.299	0.816	0.134	1	0.714	1.349	0.272	6.679
	Longitudinal slope segment	−0.160	1.606	0.010	1	0.921	0.852	0.037	19.847
	Curve slope combination segment	0	—	—	0	—	—	—	—
Traffic environment conditions	Traffic volume and composition	−1.157	0.733	2.492	1	0.114	0.315	0.075	1.322
	Work space location	2.352	0.676	12.094	1	0.001	10.508	2.791	39.559
	Work zone layout	0.628	1.261	0.248	1	0.619	1.873	0.158	22.178
	Traffic organization and control measures	0	—	—	0	—	—	—	—
Traffic control signs	Work zone warning sign	−0.650	0.561	1.340	1	0.247	0.522	0.174	1.568
	Speed limit sign	−0.134	0.515	0.067	1	0.795	0.875	0.319	2.399
	Merging guide sign	0	—	—	0	—	—	—	—
Speed conditions	Speed difference with front vehicle	−2.057	0.849	5.868	1	0.015	0.128	.024	0.675
	Speed difference with front side vehicle	0.231	0.720	0.103	1	0.748	1.260	0.307	5.163
	Speed difference with rear vehicle	1.833	0.875	4.389	1	0.036	6.252	1.125	34.734
	Speed difference with rear side vehicle	0	—	—	0	—	—	—	—
Speed limit strategy	Single-speed limit	1.925	0.615	9.815	1	0.002	6.856	2.056	22.864
	Repeated speed limit	0.780	0.454	2.947	1	0.086	2.181	0.895	5.311
	Hierarchical speed limit	0	—	—	0	—	—	—	—