Survival Model of Drivers’ Speed Reduction Time at Bicycle Crossroads: A Driving Simulator Study

Table 5

Estimates of the Weibull AFT model with clustered heterogeneity for SRT.

Variable	Estimate	SE	z - Statistic	p-value	Exp (β)	95% Conf. Interval
[m/s^2]	-0.142	0.018	-7.85	0.000	0.867	-0.176	-0.107
Drivers’ age [years]	0.006	0.003	-2.15	0.031	1.006	0.001	0.012
Countermeasure
Baseline condition	-	-	-	-	-	-	-
Raised island	0.052	0.061	0.85	0.349	1.053	-0.067	0.171
Colored paved markings	0.211	0.059	3.53	0.000	1.235	0.094	0.328
Constant	1.432	0.127	11.30	0.000		1.184	1.681
P	3.166	0.307				2.618	3.829
Log–likelihood at convergence (Pseudo)	-104.04
Log–likelihood at zero	-138.11
AIC	222.07
BIC	245.63
No of observations	229
No of groups	42