Conference Paper: A spatial queuing approach to optimize coordinated signal settings to obviate gridlock in adjacent work zones

File Download Links for fulltext
(May Require Subscription)
Supplementary
  • Basic View
  • Metadata View
  • XML View
TitleA spatial queuing approach to optimize coordinated signal settings to obviate gridlock in adjacent work zones
AuthorsWong, CK2
Wong, SC1
Lo, HK3
KeywordsCell Transmission Model
Gridlock
Signal Coordination
Spatial Queue
Work Zones
Issue Date2010
PublisherJohn Wiley & Sons, Inc.. The Journal's web site is located at http://www.advanced-transport.com
CitationJournal Of Advanced Transportation, 2010, v. 44 n. 4, p. 231-244 [How to Cite?]
DOI: http://dx.doi.org/10.1002/atr.123
AbstractGridlock is defined when traffic comes to a complete halt inducing huge delays. If a work zone on a two-lane two-way highway is set up, in which one of the traffic lanes is closed for maintenance road works, the remaining lane has to be controlled to serve the two-way traffic alternatively. The study objective is to optimize the traffic signal controls across two closely spaced work zones to prevent a gridlock, which can occur easily if upstream and downstream signals are not well coordinated. When vehicle queues build up in the middle sections between two work zones and further expand to occupy the single available lanes in both directions, the two-way traffic is then blocked and no vehicle can leave from the queues generating a gridlock. To address this problem, spatial queues are important parameters that must be explicitly analyzed. The cell transmission model, which is known to be a robust mathematical tool for the modeling of queue dynamics, is adopted in this study. A signal cell is used to represent each traffic signal control, the exit flow capacity of which is defined in accordance with the signal plan. A set of linear constraints is established to relate all of the model parameters and variables. The objective function is taken as the total number of vehicles in the critical section between the two work zones. The minimization of this objective function can effectively obviate the occurrence of a gridlock. The optimization problem is formulated as a Binary-Mixed- Integer-Linear-Program that can be solved by the standard branch-and-bound technique. Numerical examples are given to demonstrate the effectiveness of the proposed methodology. Copyright © 2010 John Wiley & Sons, Ltd.
ISSN0197-6729
2011 Impact Factor: 0.643
2011 SCImago Journal Rankings: 0.040
DOIhttp://dx.doi.org/10.1002/atr.123
ISI Accession Number IDWOS:000282784200003
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorWong, CK
dc.contributor.authorWong, SC
dc.contributor.authorLo, HK
dc.date.accessioned2012-06-26T06:35:45Z
dc.date.available2012-06-26T06:35:45Z
dc.date.issued2010
dc.description.abstractGridlock is defined when traffic comes to a complete halt inducing huge delays. If a work zone on a two-lane two-way highway is set up, in which one of the traffic lanes is closed for maintenance road works, the remaining lane has to be controlled to serve the two-way traffic alternatively. The study objective is to optimize the traffic signal controls across two closely spaced work zones to prevent a gridlock, which can occur easily if upstream and downstream signals are not well coordinated. When vehicle queues build up in the middle sections between two work zones and further expand to occupy the single available lanes in both directions, the two-way traffic is then blocked and no vehicle can leave from the queues generating a gridlock. To address this problem, spatial queues are important parameters that must be explicitly analyzed. The cell transmission model, which is known to be a robust mathematical tool for the modeling of queue dynamics, is adopted in this study. A signal cell is used to represent each traffic signal control, the exit flow capacity of which is defined in accordance with the signal plan. A set of linear constraints is established to relate all of the model parameters and variables. The objective function is taken as the total number of vehicles in the critical section between the two work zones. The minimization of this objective function can effectively obviate the occurrence of a gridlock. The optimization problem is formulated as a Binary-Mixed- Integer-Linear-Program that can be solved by the standard branch-and-bound technique. Numerical examples are given to demonstrate the effectiveness of the proposed methodology. Copyright © 2010 John Wiley & Sons, Ltd.
dc.description.natureLink_to_subscribed_fulltext
dc.identifier.citationJournal Of Advanced Transportation, 2010, v. 44 n. 4, p. 231-244 [How to Cite?]
DOI: http://dx.doi.org/10.1002/atr.123
dc.identifier.doihttp://dx.doi.org/10.1002/atr.123
dc.identifier.epage244
dc.identifier.hkuros183351
dc.identifier.isiWOS:000282784200003
dc.identifier.issn0197-6729
2011 Impact Factor: 0.643
2011 SCImago Journal Rankings: 0.040
dc.identifier.issue4
dc.identifier.scopuseid_2-s2.0-77958077830
dc.identifier.spage231
dc.identifier.urihttp://hdl.handle.net/10722/152166
dc.identifier.volume44
dc.languageeng
dc.publisherJohn Wiley & Sons, Inc.. The Journal's web site is located at http://www.advanced-transport.com
dc.publisher.placeUnited States
dc.relation.ispartofJournal of Advanced Transportation
dc.relation.referencesReferences in Scopus
dc.subjectCell Transmission Model
dc.subjectGridlock
dc.subjectSignal Coordination
dc.subjectSpatial Queue
dc.subjectWork Zones
dc.titleA spatial queuing approach to optimize coordinated signal settings to obviate gridlock in adjacent work zones
dc.typeConference_Paper
Author Affiliations
  1. The University of Hong Kong
  2. City University of Hong Kong
  3. Hong Kong University of Science and Technology