Real-time estimation of lane-based queue lengths at isolated signalized junctions
In this study, the authors develop a real-time estimation approach for lane-based queue lengths. Their aim is to determine the numbers of queued vehicles in each lane, based on detector information at isolated signalized junctions. The challenges involved in this task are to identify whether there is a residual queue at the start time of each cycle and to determine the proportions of lane-to-lane traffic volumes in each lane. Discriminant models are developed based on time occupancy rates and impulse memories, as calculated by the detector and signal information from a set of upstream and downstream detectors. To determine the proportions of total traffic volume in each lane, the downstream arrivals for each cycle are estimated by using the Kalman filter, which is based on upstream arrivals and downstream discharges collected during the previous cycle. Both the computer simulations and the case study of real-world traffic show that the proposed method is robust and accurate for the estimation of lane-based queue lengths in real time under a wide range of traffic conditions. Calibrated discriminant models play a significant role in determining whether there are residual queued vehicles in each lane at the start time of each cycle. In addition, downstream arrivals estimated by the Kalman filter enhance the accuracy of the estimates by minimizing any error terms caused by lane-changing behavior.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/0968090X
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Supplemental Notes:
- Abstract reprinted with permission of Elsevier.
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Authors:
- Lee, Seunghyeon
- Wong, S C
- Li, Y C
- Publication Date: 2015-7
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; Photos; References; Tables;
- Pagination: pp 1-17
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Serial:
- Transportation Research Part C: Emerging Technologies
- Volume: 56
- Issue Number: 0
- Publisher: Elsevier
- ISSN: 0968-090X
- Serial URL: http://www.sciencedirect.com/science/journal/0968090X
Subject/Index Terms
- TRT Terms: Adaptive control; Discriminant analysis; Isolated intersections; Kalman filtering; Lane distribution; Queuing theory; Signalized intersections; Traffic queuing
- Subject Areas: Highways; Operations and Traffic Management; I71: Traffic Theory; I73: Traffic Control;
Filing Info
- Accession Number: 01566333
- Record Type: Publication
- Files: TRIS
- Created Date: Jun 15 2015 11:31AM