Measuring Service Reliability Using Automatic Vehicle Location Data

Table 4

Assessment results for different groups travel time samples.

Groups	PTI (PT*)	BTI (BT*)	RTI (RT*)	ERBTI (ERBT)
Empirical	1.148 (33.2)	0.148 (4.30)	0.153 (4.40)	0.373 (10.7)
Group A	1.158 (32.9)	0.158 (4.50)	0.156 (4.40)	0.291 (8.20)
Group B	1.164 (33.9)	0.165 (4.80)	0.151 (4.40)	0.500 (14.6)
Group C	1.139 (31.0)	0.139 (3.80)	0.165 (4.40)	0.083 (2.19)
Group D	1.125 (31.4)	0.125 (3.50)	0.164 (4.40)	0.127 (3.40)
Group E	1.159 (34.3)	0.159 (4.70)	0.149 (4.40)	0.535 (15.8)

 *PT: planning time; BT: buffer time; RT: reliability time.