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Title: Hierarchical fuzzy logic traffic control at a road junction
Authors: Heung, TH
Ho, TK
Fung, YF
Keywords: Fuzzy logic
Road junction
Traffic control
Issue Date: 2003
Publisher: ACTA Press
Source: Control and intelligent systems, 2003, v. 31, no. 1, p. 52-59 How to cite?
Journal: Control and intelligent systems 
Abstract: In this article a hierarchical fuzzy logic controller is proposed to tackle this traffic control problem at a two-way road junction with turning traffic. The two levels of fuzzy logic controllers devise the minimum effective green-time and fine-tune it, respectively, at each phase of a traffic-light cycle. The complexity of the controller at each level is reduced with a smaller rule-set. The performance of this hierarchical controller is examined by comparison with a fixed-time controller under various traffic conditions. Substantial delay reduction has been achieved; the performance and limitations of the controller are discussed.
ISSN: 1480-1752
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