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An Approach to Improve the Availability of a Traffic Light System

Received: 13 April 2021     Accepted: 30 April 2021     Published: 6 July 2021
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Abstract

Traffic Light System (TLS) is a standalone safety-critical infrastructure that is used to avert traffic congestion and accidents at a road intersection. It is pertinent that its service must be dependable because any failure could result to loss of lives or resources. The existing fail-safe TLS often experience downtime as a result of inevitable fault developed frequently by its Traffic Light Controller Unit (TLCU) due to harsh weather and other environmental factors exposed to on the roads. Hence, the need for a fault-tolerant TLS that will optimize TLS service delivery even at the event of a faulty TLCU initiated this work. In developing the fault-tolerant TLS, three TLCUs were interfaced using the concept of triple modular redundancy architecture. A disagreement detector was configured to test the viability of the primary TLCU using stationarity process. Markovian process was used to switch a faulty primary TLCU to a good one using majority voter mechanism. The fault-tolerant TLS and existing TLS were simulated using MATLAB R2015a. The performance of the fault-tolerant TLS was evaluated by comparing with that of existing TLS using availability as performance metric. The simulation results revealed that the fault-tolerant TLS yielded 99.9474% availability while simulation results of the existing TLS yielded 97.6199% availability. This work has therefore developed a fault-tolerant TLS that performed better than the existing fail-safe TLS.

Published in International Journal of Intelligent Information Systems (Volume 10, Issue 4)
DOI 10.11648/j.ijiis.20211004.11
Page(s) 37-43
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2021. Published by Science Publishing Group

Keywords

TLS, TLCU, Fail-Safe, Fault-Tolerant, Markovian, Stationarity

References
[1] Udoakah, N. and Okure, G. (2017). Design and Implementation of a Density Based Traffic Light Control with surveillance System, Nigerian Journal of Technology (NIJOTECH), 36 (4): 1239-1248, ISSN: 2467-8821, pp 23-31.
[2] Sivarao, K. S., Mazran, E. and Anand, T. J. (2010). Electrical and Mechanical Fault Alert Traffic Light System Using Wireless Technology. International Journal of Mechanical and Mechatronics Engineering, 10 (4): 15-18.
[3] Salami, S. O., Akinyele, A. O., Sarumi, A. J. and Kesinro, K. K. (2013). Design and Construction of a Close Loop Traffic Light Control System. International Journal of Engineering Research and Technology (IJERT), ISSN: 2278- 0181. 2 (12): 2107-2115.
[4] Latha, J. R. and Suman, U. (2015). Intelligent traffic Light Controller. International Journal of Emerging Engineering Research and Technology, 3 (3): 38-50.
[5] Paoli, A., Sartini, M. and Lafortuneb, S. (2011). Active fault tolerant control of discrete event systems using online diagnostics. Automaticagoogle scholar 2011; 47. pp 639–649.
[6] Alagoz, J. M., Tsao, J. Y. andSimmons, J. A. (2008). “Prospects for LED lighting,” Proc. SPIE 5187, pp 227–233.
[7] Jaroslaw, S. (2012). “Reliability and Statistics in Transportation and Communication,” Proceedings of the 12th International Conference (RelStat’12), 17–20 October 2012, Riga, Latvia, ISBN 978-9984-818-49-8 Transport and Telecommunication Institute, Lomonosova 1, LV-1019, Riga, Latvia, pp 362–369.
[8] Hipel, K. W. and McLeod, A. I. (1994). “Time Series Modelling of Water Resources and Environmental Systems”, Amsterdam, Elsevier 1994, pp 30-42.
[9] Rodney, A. (2006). Design and Implementation of a Modular Controller for Robotic Machines, a Published Ph.D thesis, Presented to the department of Mechanical Engineering, University of Saskatchewan, pp 44-70.
[10] Shalangwa, D. A. (2010). Design and Implementation of a Model (ADS-3g) of a Traffic Light using Automated Solar Power Supply, Journal of Electrical Engineering Research, http://www.academicjournals.org/jeeer, ISSN-2141-2367@2010 Academic Journals, 2 (3): 57-67.
[11] Dauda, E., Abdulkadir H., Emmanuel, G. and Kafilat, I. (2019). Design and Development of a Traffic Density Detection and Signal Adjustment System, Asian Journal of Applied Science and technology (AJAST), 3 (1): 86-98.
[12] Khelassi A. D. And Theilliol P. W. (2014): “ Control Design for over-actuated Systems Based on Reliability Indicator”, Centre de Recherche en Automatique de Nancy (CRAN) CNRS UMR 7039, Nancy-Universit´e BP 70239, 54506 Vandœuvre Cedex, France, at: https://www.researchgate.net/publication/225070811, pp 1-5.
[13] Sparsh M. And Jeffery S. V. (2015): “A Survey of Technique for Modelling and Improving Reliability of Computing System”, IEEE Transaction on Parallel and Distributing Systems, at: https://www.researchgate.net/publication/275211206, pp 1-8.
[14] Gauri J. (2016): “ Efficient Redundancy Techniques to Reduce Delay in Cloud Systems”, a Ph.D Thesis Submitted to the Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology., pp 1- 209.
[15] Kalla H., Girault A. And Sorel Y. (2010). An Hybrid Redundancy Approach to Tolerate Transient Faults in Multiple Bus Architectures. In Proceedings of Pacific Tim International Symposium on Fault-tolerant Systems (PRFTS), Taipei, Taiwan, pp 425-431.
Cite This Article
  • APA Style

    Olajide Blessing Olajide, Oke Alice Olufunke, Odeniyi Olufemi Ayodeji, Olabiyisi Stephen Olatunde, Adeosun Olusegun Olajide. (2021). An Approach to Improve the Availability of a Traffic Light System. International Journal of Intelligent Information Systems, 10(4), 37-43. https://doi.org/10.11648/j.ijiis.20211004.11

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    ACS Style

    Olajide Blessing Olajide; Oke Alice Olufunke; Odeniyi Olufemi Ayodeji; Olabiyisi Stephen Olatunde; Adeosun Olusegun Olajide. An Approach to Improve the Availability of a Traffic Light System. Int. J. Intell. Inf. Syst. 2021, 10(4), 37-43. doi: 10.11648/j.ijiis.20211004.11

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    AMA Style

    Olajide Blessing Olajide, Oke Alice Olufunke, Odeniyi Olufemi Ayodeji, Olabiyisi Stephen Olatunde, Adeosun Olusegun Olajide. An Approach to Improve the Availability of a Traffic Light System. Int J Intell Inf Syst. 2021;10(4):37-43. doi: 10.11648/j.ijiis.20211004.11

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  • @article{10.11648/j.ijiis.20211004.11,
      author = {Olajide Blessing Olajide and Oke Alice Olufunke and Odeniyi Olufemi Ayodeji and Olabiyisi Stephen Olatunde and Adeosun Olusegun Olajide},
      title = {An Approach to Improve the Availability of a Traffic Light System},
      journal = {International Journal of Intelligent Information Systems},
      volume = {10},
      number = {4},
      pages = {37-43},
      doi = {10.11648/j.ijiis.20211004.11},
      url = {https://doi.org/10.11648/j.ijiis.20211004.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijiis.20211004.11},
      abstract = {Traffic Light System (TLS) is a standalone safety-critical infrastructure that is used to avert traffic congestion and accidents at a road intersection.  It is pertinent that its service must be dependable because any failure could result to loss of lives or resources. The existing fail-safe TLS often experience downtime as a result of inevitable fault developed frequently by its Traffic Light Controller Unit (TLCU) due to harsh weather and other environmental factors exposed to on the roads. Hence, the need for a fault-tolerant TLS that will optimize TLS service delivery even at the event of a faulty TLCU initiated this work. In developing the fault-tolerant TLS, three TLCUs were interfaced using the concept of triple modular redundancy architecture. A disagreement detector was configured to test the viability of the primary TLCU using stationarity process. Markovian process was used to switch a faulty primary TLCU to a good one using majority voter mechanism. The fault-tolerant TLS and existing TLS were simulated using MATLAB R2015a. The performance of the fault-tolerant TLS was evaluated by comparing with that of existing TLS using availability as performance metric. The simulation results revealed that the fault-tolerant TLS yielded 99.9474% availability while simulation results of the existing TLS yielded 97.6199% availability. This work has therefore developed a fault-tolerant TLS that performed better than the existing fail-safe TLS.},
     year = {2021}
    }
    

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  • TY  - JOUR
    T1  - An Approach to Improve the Availability of a Traffic Light System
    AU  - Olajide Blessing Olajide
    AU  - Oke Alice Olufunke
    AU  - Odeniyi Olufemi Ayodeji
    AU  - Olabiyisi Stephen Olatunde
    AU  - Adeosun Olusegun Olajide
    Y1  - 2021/07/06
    PY  - 2021
    N1  - https://doi.org/10.11648/j.ijiis.20211004.11
    DO  - 10.11648/j.ijiis.20211004.11
    T2  - International Journal of Intelligent Information Systems
    JF  - International Journal of Intelligent Information Systems
    JO  - International Journal of Intelligent Information Systems
    SP  - 37
    EP  - 43
    PB  - Science Publishing Group
    SN  - 2328-7683
    UR  - https://doi.org/10.11648/j.ijiis.20211004.11
    AB  - Traffic Light System (TLS) is a standalone safety-critical infrastructure that is used to avert traffic congestion and accidents at a road intersection.  It is pertinent that its service must be dependable because any failure could result to loss of lives or resources. The existing fail-safe TLS often experience downtime as a result of inevitable fault developed frequently by its Traffic Light Controller Unit (TLCU) due to harsh weather and other environmental factors exposed to on the roads. Hence, the need for a fault-tolerant TLS that will optimize TLS service delivery even at the event of a faulty TLCU initiated this work. In developing the fault-tolerant TLS, three TLCUs were interfaced using the concept of triple modular redundancy architecture. A disagreement detector was configured to test the viability of the primary TLCU using stationarity process. Markovian process was used to switch a faulty primary TLCU to a good one using majority voter mechanism. The fault-tolerant TLS and existing TLS were simulated using MATLAB R2015a. The performance of the fault-tolerant TLS was evaluated by comparing with that of existing TLS using availability as performance metric. The simulation results revealed that the fault-tolerant TLS yielded 99.9474% availability while simulation results of the existing TLS yielded 97.6199% availability. This work has therefore developed a fault-tolerant TLS that performed better than the existing fail-safe TLS.
    VL  - 10
    IS  - 4
    ER  - 

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Author Information
  • Department of Computer Engineering, Federal University, Wukari, Nigeria

  • Department of Computer Engineering, Ladoke Akintola University of Technology, Ogbomoso, Nigeria

  • Department of Computer Science, Osun State College of Technology, Esa Oke, Nigeria

  • Department of Computer Science, Ladoke Akintola University of Technology, Ogbomoso, Nigeria

  • Department of Computer Science, Ladoke Akintola University of Technology, Ogbomoso, Nigeria

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