Skip Navigation


The Computer Journal Advance Access first published online on June 14, 2006
This version published online on July 19, 2006
The Computer Journal, doi:10.1093/comjnl/bxl032
This Article
Right arrow Full Text (Rapid PDF)
Right arrow All Versions of this Article:
49/6/634    most recent
bxl032v2
bxl032v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Huang, Y.-S.
Right arrow Search for Related Content
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author 2006. Published by Oxford University Press on behalf of The British Computer Society. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org
Received December 28, 2005
Revised March 22, 2006

Article

Design of Traffic Light Control Systems Using Statecharts

Yi-Sheng Huang 1 *

1 Department of Aeronautical Engineering, Chung Cheng Institute of Technology, National Defense University, Taoyuan 335, Taiwan, ROC

* To whom correspondence should be addressed.
Yi-Sheng Huang, E-mail: yshuang{at}ccit.edu.tw


  Abstract

Statechart has been utilized as a visual formalism for the modeling of complex systems. It illuminates the features on describing properties of causality, concurrency and synchronization. This paper focuses on the use of statecharts to model an urban traffic lights control system. The applications of statecharts to eight-phase, six-phase and two-phase traffic lights are illustrated. The advantage of the proposed approach is the clear presentation of traffic lights' behaviors in terms of conditions and events that cause the phase alternations. Moreover, the paper also proposes a new modeling methodology, called concurrent state graphs, that allows us to present all the concurrent states in complex statecharts. The analysis of the control models is performed to demonstrate how the models enforce the lights' transitions by reachability tree method. And then the reachability and reversibility properties of the control statecharts will be obtained. Finally, an urban traffic lights' control system with nine intersections will be realized. To our knowledge, this is the first work that employs statecharts to obtain the models of the urban traffic light control system.

Keywords: statecharts; reachability tree; traffic light and intelligent transport system.
The originally published version of this paper was incorrect. The first author's surname was incorrectly spelt. The author's last name should be ‘Huang’ not ‘Hyang’.
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.