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On the range of the common cycle time in a road network

Lu, Ting and Woelki, Marko and Wagner, Peter (2015) On the range of the common cycle time in a road network. Journal of Harbin Institute of Technology, 22 (6), pp. 48-53. Harbin Gongye Daxue/Harbin Institute of Technology. DOI: [10.11916/j.issn.1005-9113.2015.06.000] ISSN 1005-9113

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In a coordinated road network, the optimal common cycle time is determined by evaluating the performance of the network in the given range of cycles. Normally, this range is determined by users’ experience. And a large range of common cycle times, e.g. [30, 200] is chosen, which requires long computation time. This study considers that the optimal common cycle time ranges between the minimal and maximal value of intersections’ individual optimal cycle time. It is proved mathematically from the convexity condition, that the delay of the network and each individual intersection are convex functions of the cycle time according to Webster delay model. Finally, 2000 random cases for the network composed of two intersections and of eight intersections are created to underline the proposed conclusions. The results of all cases confirm the validity, and show up to 90% improvement in computation time to compare with experience range. The signal optimization tool, Synchro, is also used to validate the conclusion by 50 random cases. The results confirm reliability further.

Item URL in elib:https://elib.dlr.de/98406/
Document Type:Article
Title:On the range of the common cycle time in a road network
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lu, Tingting.lu (at) dlr.deUNSPECIFIED
Woelki, Markomarko.woelki (at) dlr.deUNSPECIFIED
Wagner, Peterpeter.wagner (at) dlr.deUNSPECIFIED
Journal or Publication Title:Journal of Harbin Institute of Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :[10.11916/j.issn.1005-9113.2015.06.000]
Page Range:pp. 48-53
Publisher:Harbin Gongye Daxue/Harbin Institute of Technology
Keywords:common cycle, traffic signal optimization, convexity, Webster model
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Traffic Management (old)
DLR - Research area:Transport
DLR - Program:V VM - Verkehrsmanagement
DLR - Research theme (Project):V - I.MoVe (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Transportation Systems > Traffic Management
Deposited By: Wölki, Marko
Deposited On:14 Oct 2015 15:49
Last Modified:08 Mar 2018 18:38

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