metrics
DESCRIPTION
Metrics. MAPE MAPE< 10% orTRANSCRIPT
Metrics
• MAPE
• MAPE< 10% or <20% considered acceptable
• Does not take variability into account
• FHWA Recommendation – Unreliable network – Higher level of
inaccuracy can be accepted– Reliable network – Higher accuracy is needed
I-5 N SOD Travel Time Distribution
Loop Data
0
5
10
15
20
25
700 715 730 745 800 815 830 845 900
Time of Day
Trav
el T
ime
Probe Data
0
2
4
6
8
10
12
14
16
18
700 715 730 745 800 815 830
Time of Day
Trav
el T
ime
Time of Day Mean TT (min)
Std Dev (min Mean + Stdev Mean – Stdev ETT (min) Within Mean +/- Stdev
Error (%)
070010.05 0.64 10.69 9.40
10.18 Yes -5.71
10.18 Yes -4.82
9.35 No -4.10
9.33 No -1.40
9.31 No -2.44
9.63 Yes -4.44
0715
11.52 1.14 12.66 10.38
10.96 Yes -11.91
10.96 Yes -11.55
10.35 No -7.58
0730 13.81 0.88 14.70 12.92
14.33 Yes -0.80
13.88 Yes -2.33
10.6 No -17.18
0745 14.25 1.07 15.32 13.17
14.88 Yes 4.81
14.85 Yes -3.25
12.1 No -8.33
0800 13.00 0.84 13.85 12.15
15.63 No 12.87
16.36 No 20.79
12.6 Yes 0.00
12.62 Yes 4.99
081512.45 0.07 12.52 12.37
14.26 No 14.13
11.6 No -6.45
083011.57 0.31 11.89 11.25
12.08 No 6.46
11.9 No 0.84