Off-Ramp Vehicle Mandatory Lane-Changing Duration in Small Spacing Section of Tunnel-Interchange Section Based on Survival Analysis
Table 4
Statistical results of MLCD under the influence of different spacings.
Spacing (m)
Total cases
Invalid cases
Average
Median
Log-ran test
Estimate
Standard error
95% confidence interval
Estimate
Standard error
95% confidence interval
Lower
Upper
Lower
Upper
300
42
8
3.802
0.208
3.395
4.209
3.966
0.123
3.725
4.207
0.000
400
42
6
5.815
0.286
5.254
6.375
5.450
0.206
5.046
5.854
—
500
42
0
7.449
0.214
7.030
7.868
7.750
0.139
7.477
8.023
—
600
42
0
6.907
0.300
6.320
7.494
7.400
0.366
6.683
8.117
—
Log-rank test is used to determine whether there are significant differences between survival functions. indicates a significant difference; indicates no significant difference.