Travel Time Reliability for Urban Networks: Modelling and Empirics

Table 2

AIC values for the Lognormal model and the Johnson-curve model.

AIC value
Fitted distributions	Time period	Day 1	Day 2	Day 3
Johnson curve	7:00 a.m.–7:30 a.m.	15823	16988	17154
	10:00 a.m.–10:30 a.m.	16343	16772	16952
Lognormal	7:00 a.m.–7:30 a.m.	16128	18214	17993
	10:00 a.m.–10:30 a.m.	16766	17525	17629