Intelligent Transportation Systems Laboratory Current Projects Reports
Student Researcher: S. Tantiyanugulchai
Faculty Advisor: R.L. Bertini
ABSTRACT: Developing clear, relevant performance measures for arterials is challenging due to complicated traffic control parameters and users with numerous origins and destinations. With increasing data availability from intelligent transportation systems (ITS) deployments, it is increasingly possible to develop and test new arterial performance measures. Important parameters including average speed, travel time and delay can be obtained both directly and indirectly from sources such as automatic vehicle location (AVL) system. In this paper, we demonstrate how AVL data can be used to characterize the performance of an arterial. Two sources of ITS data were used to assess arterial performance on one corridor in Portland, Oregon. First, we extracted data from the bus dispatch system (BDS) of the transit provider for Portland, Oregon. Performance characteristics as described by bus travel on the arterial were then compared with ground truth data collected by probe vehicles equipped with global positioning systems (GPS) sensors traveling with normal traffic on the same arterial on the same days. Comparisons were made between the two methods and conclusions were drawn regarding the utility of the transit AVL data for real-time advanced traffic management and traveler information systems. PRODUCTS: M.S. Thesis Arterial Performance Measurement Using Transit Buses as Probe Vehicles Center for Transportation Studies Seminar - April 30, 2004 
presentation Tantiyanugulchai, S., "Arterial Performance Measurement Using Transit Buses as Probe Vehicles." Center for Transportation Studies Seminar, Portland State University, Portland, Oregon, April 30, 2004. journal Bertini, R.L. and Tantiyanugulchai, S., "Transit Buses as Traffic Probes: Empirical Evaluation Using Geo-Location Data." Transportation Research Record: Journal of the Transportation Research Board, No. 1870, Transportation Research Board of the National Academies, Washington, D.C., 2004, pp. 35 thesis Tantiyanugulchai, S., "Arterial Performance Measurement Using Transit Buses as Probe Vehicles." M.S. Thesis, Department of Civil Environmental Engineering, Portland State University, 2004. conferenceproceedings Bertini, R.L. and Tantiyanugulchai, S., "Arterial Performance Measurement Using Transit Buses as Probe Vehicles." Proceedings of the IEEE 6th Annual Conference on Intelligent Transportation Systems, Shanghai, China, October 2003. presentation Bertini, R.L. and Tantiyanugulchai, S., "Arterial Performance Measurement Using Transit Buses as Probe Vehicles." IEEE 6th Annual Conference on Intelligent Transportation Systems, Shanghai, China, October 2003. conferenceproceedings Tantiyanugulchai, S. and Bertini, R.L., "Analysis of a Transit Bus as a Probe Vehicle for Arterial Performance Measurement." Compendium of Technical Papers, Institute of Transportation Engineers 2003 Annual Meeting, Seattle, Washington, 2003. journal Tantiyanugulchai, S. and Bertini, R.L., "Can Buses Predict Your Car's Travel Time?." Westernite, Institute of Transportation Engineers District 6, Vol. 57, No. 5, September-October, 2003.
By S. Tantiyanugulchai, M.S. Thesis, Department of Civil Environmental Engineering, Portland State University, 2004. [Defense Presentation] [Thesis Proposal]
Transit Buses as Arterial Traffic Probes: Empirical Evaluation Using Geo-Location Data