Off-Ramp Vehicle Mandatory Lane-Changing Duration in Small Spacing Section of Tunnel-Interchange Section Based on Survival Analysis

Table 5

Estimation results of Cox model parameters.

Covariate	β	SE	Wald	Sig.	Exp (β)	95% confidence interval
						Lower	Upper
X 21	−1.738	0.274	40.133	0.000	0.176	0.103	0.301
X 22	−2.360	0.299	62.023	0.001	0.094	0.053	0.170
X 23	−2.096	0.311	69.683	0.294	0.125	0.041	0.137
X 51	0.689	0.201	11.727	0.000	1.992	0.339	0.745
X 52	1.556	0.231	45.394	0.030	4.739	0.134	0.332
X 61	0.588	0.170	11.951	0.001	1.800	1.290	2.511