Empirical Study of Travel Time Estimation and Reliability

Table 3

MARE of the three methods for path travel time variance estimation of five paths.

MARE	Method	Path; 18-17-16	Path; 70-69-68	Path; 133-134-135	Path; 140-139-138	Path; 136-135-134
Whole day	Method 2.1	18.96	9.40	24.49	17.88	28.54
	Method 2.2	57.04	26.70	22.85	29.67	33.72
	Method 2.3	53.97	16.47	16.12	17.15	36.96
a.m. (7:00–9:00)	Method 2.1	6.83	12.94	12.23	5.37	31.17
	Method 2.2	47.60	22.03	24.11	24.18	35.78
	Method 2.3	43.77	19.79	11.49	6.02	35.88
p.m. (17:00–19:00)	Method 2.1	10.36	#	#	4.39	#
	Method 2.2	40.33	#	#	21.88	#
	Method 2.3	39.46	#	#	4.84	#
Nonpeak hours	Method 2.1	21.57	8.22	26.95	20.69	27.99
	Method 2.2	61.18	28.25	22.60	31.10	38.12
	Method 2.3	57.89	15.36	17.05	19.68	37.18

# indicates that, during this period, there are no data for the paths.