Analytical modeling and sensitivity analysis for travel time estimation on signalized urban networks
Bhaskar, Ashish, Chung, Edward, de Mouzon, Olivier, & Dumont, Andre-Gilles (2008) Analytical modeling and sensitivity analysis for travel time estimation on signalized urban networks. In Powell, J & Smith, W (Eds.) Proceedings of the Transportation Research Board 87th Annual Meeting, 13 - 17 January, 2008, United States of America, Washington, D.C..
This paper presents a model for estimation of average travel time and its variability on signalized urban networks using cumulative plots. The plots are generated based on the availability of data: a) case-D, for detector data only; b) case-DS, for detector data and signal timings; and c) case-DSS, for detector data, signal timings and saturation flow rate. The performance of the model for different degrees of saturation and different detector detection intervals is consistent for case-DSS and case-DS whereas, for case-D the performance is inconsistent. The sensitivity analysis of the model for case-D indicates that it is sensitive to detection interval and signal timings within the interval. When detection interval is integral multiple of signal cycle then it has low accuracy and low reliability. Whereas, for detection interval around 1.5 times signal cycle both accuracy and reliability are high.
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|Item Type:||Conference Paper|
|Keywords:||Highway traffic control systems; Loop detectors; Mathematical analysis; Operations; Route choice; Sensitivity analysis; Signalization; Traffic flow; Traffic signal cycle; Traffic signal timing; Travel time; Urban highways|
|Subjects:||Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > ARTIFICIAL INTELLIGENCE AND IMAGE PROCESSING (080100) > Simulation and Modelling (080110)|
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Transport Engineering (090507)
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering|
|Deposited On:||07 Oct 2010 08:40|
|Last Modified:||16 Aug 2012 14:13|
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