Algorithm for queue estimation with loop detector of time occupancy in off-ramps on signalized motorways

Qian, Gongbin, Lee, Jinwoo (Brian), & Chung, Edward (2012) Algorithm for queue estimation with loop detector of time occupancy in off-ramps on signalized motorways. Transportation Research Record, 2278, pp. 50-56.

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Long traffic queues on off-ramps significantly compromise the safety and throughput of motorways. Obtaining accurate queue information is crucial for countermeasure strategies. However, it is challenging to estimate traffic queues with locally installed inductive loop detectors. This paper deals with the problem of queue estimation with the interpretation of queuing dynamics and the corresponding time-occupancy distribution over motorway off-ramps. A novel algorithm for real-time queue estimation with two detectors is presented and discussed. Results derived from microscopic traffic simulation validated the effectiveness of the algorithm and revealed some of its useful features:

(a) long and intermediate traffic queues could be accurately measured, (b) relatively simple detector input (i.e., time occupancy) was required, and (c) the estimation philosophy was independent with signal timing changes and provided the potential to cooperate with advanced strategies for signal control.

Some issues concerning field implementation are also discussed.

Impact and interest:

3 citations in Scopus
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3 citations in Web of Science®

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123 since deposited on 09 Apr 2013
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ID Code: 58998
Item Type: Journal Article
Refereed: Yes
Keywords: Traffic queue, Queue estimation, Traffic control, Queue
ISSN: 0361-1981
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Transport Engineering (090507)
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Current > Research Centres > Smart Transport Research Centre
Copyright Owner: Copyright 2012 National Research Council (U.S.). Transportation Research Board
Deposited On: 09 Apr 2013 04:32
Last Modified: 25 Jun 2013 22:13

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