Travel Time
description
Transcript of Travel Time
![Page 1: Travel Time](https://reader036.fdocuments.in/reader036/viewer/2022083006/56813c30550346895da5adfc/html5/thumbnails/1.jpg)
Travel Time
![Page 2: Travel Time](https://reader036.fdocuments.in/reader036/viewer/2022083006/56813c30550346895da5adfc/html5/thumbnails/2.jpg)
Travel time estimated from initial speed TT error: TTest_av & TTi_tr
1 2 10 20 30 60 180 300 9000
5
10
15
20
25
|SMS Ttest - TTtr_i||TMS TTest - TTtr_i||TTest_i - TTtr_i|
Agg. length (sec)
TT e
rror
(sec
)
![Page 3: Travel Time](https://reader036.fdocuments.in/reader036/viewer/2022083006/56813c30550346895da5adfc/html5/thumbnails/3.jpg)
1 2 10 20 30 60 180 300 9000
5
10
15
20
25
|TTi_tr - TTsms|
300ft500ft1500ftPolynomial (1500ft)
Aggregation Width
TT e
rr
![Page 4: Travel Time](https://reader036.fdocuments.in/reader036/viewer/2022083006/56813c30550346895da5adfc/html5/thumbnails/4.jpg)
1 2 10 20 30 60 180 300 9000
5
10
15
20
25
|TTi_tr - TTsms|
300ft500ftPolynomial (500ft)1500ft
Aggregation Width
TT e
rr
![Page 5: Travel Time](https://reader036.fdocuments.in/reader036/viewer/2022083006/56813c30550346895da5adfc/html5/thumbnails/5.jpg)
1 2 10 20 30 60 180 300 9000
5
10
15
20
25
|TTi_tr - TTsms|
300ftPolynomial (300ft)500ft1500ft
Aggregation Width
TT e
rr
![Page 6: Travel Time](https://reader036.fdocuments.in/reader036/viewer/2022083006/56813c30550346895da5adfc/html5/thumbnails/6.jpg)
Error between TTtr_i and TTsms
TTtr_i – TTsms = TTtr_i – TTest_i + TTest_i – TTsms
Error owing to the Error du to the average: assumption of a =time aggregation
constant speed between 2 loop detectors
Prevalence of the errors?
![Page 7: Travel Time](https://reader036.fdocuments.in/reader036/viewer/2022083006/56813c30550346895da5adfc/html5/thumbnails/7.jpg)
300ft 500ft 1500ft0
5
10
15
20
25
|TTi_tr - TTi_e||TTi_e - TTsms|
Aggregation Width
MA
E (s
ec)
Error between TTtr_i and TTsms
![Page 8: Travel Time](https://reader036.fdocuments.in/reader036/viewer/2022083006/56813c30550346895da5adfc/html5/thumbnails/8.jpg)
• Variability over distance can prevail upon variability over distance
Error between TTtr_i and TTsms
![Page 9: Travel Time](https://reader036.fdocuments.in/reader036/viewer/2022083006/56813c30550346895da5adfc/html5/thumbnails/9.jpg)
Error & traffic conditions
1 2 10 20 30 60 180 300 9000
10
20
30
40
50
60
Spacing: 300ft
transitioncongestion
Aggregation Width (sec)
MAP
E
1 2 10 20 30 60 180 300 9000
10
20
30
40
50
60
Spacing: 1500ft
transitioncongestion
Aggregation Width (sec)
MAP
E
![Page 10: Travel Time](https://reader036.fdocuments.in/reader036/viewer/2022083006/56813c30550346895da5adfc/html5/thumbnails/10.jpg)
Fundamental diagram
![Page 11: Travel Time](https://reader036.fdocuments.in/reader036/viewer/2022083006/56813c30550346895da5adfc/html5/thumbnails/11.jpg)
![Page 12: Travel Time](https://reader036.fdocuments.in/reader036/viewer/2022083006/56813c30550346895da5adfc/html5/thumbnails/12.jpg)
![Page 13: Travel Time](https://reader036.fdocuments.in/reader036/viewer/2022083006/56813c30550346895da5adfc/html5/thumbnails/13.jpg)
![Page 14: Travel Time](https://reader036.fdocuments.in/reader036/viewer/2022083006/56813c30550346895da5adfc/html5/thumbnails/14.jpg)
![Page 15: Travel Time](https://reader036.fdocuments.in/reader036/viewer/2022083006/56813c30550346895da5adfc/html5/thumbnails/15.jpg)