| Peer-Reviewed

Traffic Assessment for Pavement Structural Design Using RN29, LR1132, and HD26/01 Methods

Received: 25 October 2016     Accepted: 7 November 2016     Published: 21 December 2016
Views:       Downloads:
Abstract

Traffic surveys are means of obtaining information about the traffic characteristics of an area. The data collected is used for traffic assessment of the area for various Engineering purposes. This study was an attempt to conduct a traffic assessment for the purpose of pavement design. Three design methods: Road Note 29 (RN 29), Laboratory Report 1132 (LR 1132), and Design manual for Highways and Bridges (DMHB; HD 26/01), were adopted. Three locations along the Onitsha-Enugu expressway, a Nigerian interstate highway, were surveyed. The highest volume of commercial vehicles was observed at the Nkpor location with corresponding design traffics of 108msa, 304msa, and 92.92msa using RN 29, LR 1132, and HD 26/01 respectively. Computed design traffics for Nkpor, Awkuzu, and Kwata locations using LR 1132 were 304msa, 175msa, and 167msa respectively. These were found to be significantly higher than those computed using RN 29 and HD 26/01 due to the fact that a uniform damaging factor was computed for the entire traffic count without any form of categorization or weight impact discrimination. It was concluded that the traffic assessment method to be adopted for any pavement design purpose should be consistent with the design method to be used for the selection of pavement thicknesses.

Published in American Journal of Traffic and Transportation Engineering (Volume 1, Issue 4)
DOI 10.11648/j.ajtte.20160104.12
Page(s) 47-52
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), 2016. Published by Science Publishing Group

Keywords

Traffic, Assessment, Pavement, Commercial Vehicles, Design, Million Standard Axle (msa)

References
[1] K. Button. “Transport Economics”. 3rd Edition, Edward Elgar, Cheltenham, UK (2010).
[2] M. L. Manheim. “Fundamentals of Transportation Systems Analysis”. Volume 1, MIT Press, Cambridge (1976).
[3] L. Qiang, M. Leslie, and M. Sue. “The Implication of Climate Change on Pavement Performance and Design”. A Report Submitted to the University of Delaware Transportation Centre (UD-UTC), 2011.
[4] J. W. Adrox and W. R. Woods. “A General Characterization of Pavement System Failures with Emphasis on a Method for Selecting Repair Process”. Journal of Construction Education, 7 (1), (2002) pp 58- 62.
[5] L. R. Kadiyali. “Highway Engineering”. 3rd edition. CBS Publishers and Distributors Pvt Ltd. New Delhi (1989).
[6] R. L. Carvalho. “Implementation of the NCHR 1-37A”. Design Guide Final Report Volume 1, 2006. [Online] Assessed from http://designtransportation.org/Document/MDSHA Assessed on 29th January 2016.
[7] C. M. Nwakaire. “Pavement Design; Considerations, Criteria, and Concepts”. Lecture 11, Highway and Transportation Engineering II. Department of Civil Engineering, Nnamdi Azikiwe University, Awka, 19th January, 2016.
[8] C. A. O’Flaherty. “Highways: The Location, Design, Construction, and Maintenance of Pavements”. Butterworths and Heinemann, Oxford United Kingdom (2012).
[9] M. Rogers. “Highway Engineering”. Second Edition, Blackwell Publishing, Oxford, UK (2012).
[10] R. Haas, L. C. Falls, D. MacLeod and S. Tighe. “Climate Impacts and Adaptations on Roads in Northern Canada”. Cold Climates Conference, Regina, (2004).
[11] H. D. Robertson. (ed). “Volume Studies”. Manual of Transportation Engineering Studies, Prentice Hall, Inc, 6-31 (1994).
[12] D. R. Middleton, R. T. Parker, and R. R. Longmire “Investigation of Vehicle Detector Performance and ATM Interface”. Texas Transportation Institute, Unite States (2007).
[13] B. L. Gupta and A. Gupta. “Highway and Bridge Engineering”, Standard Publishers Distributors, Delhi, India (2008).
[14] W. S. Homburger, J. W. Hall, R. C. Loutzenheiser, and W. R. Reilly. “Volume Studies and Characteristics”. A Lecture Not on the Fundamentals of Traffic Engineering. Institute of Transportation Studies, University of California, Berkeley (1996).
[15] J. P. Rodrigue. “The Geography of Transport Systems”, Third Edition. Routledge, New-York (2013).
[16] J. D. Ortuzar and L. G. Willumsen. “Modelling Transport” 4th Edition, John Willey and Sons Ltd, Chichester, West Sussex, United Kingdom, (2011).
[17] Design Manual for Roads and Bridges (DMRB). “Traffic Assessment”, HD06/part 1, Vol. 7, Section 2. The Department of Transport, London, UK. February 1996.
Cite This Article
  • APA Style

    Nwakaire M. Chidozie, Chukwu C. Joshua. (2016). Traffic Assessment for Pavement Structural Design Using RN29, LR1132, and HD26/01 Methods. American Journal of Traffic and Transportation Engineering, 1(4), 47-52. https://doi.org/10.11648/j.ajtte.20160104.12

    Copy | Download

    ACS Style

    Nwakaire M. Chidozie; Chukwu C. Joshua. Traffic Assessment for Pavement Structural Design Using RN29, LR1132, and HD26/01 Methods. Am. J. Traffic Transp. Eng. 2016, 1(4), 47-52. doi: 10.11648/j.ajtte.20160104.12

    Copy | Download

    AMA Style

    Nwakaire M. Chidozie, Chukwu C. Joshua. Traffic Assessment for Pavement Structural Design Using RN29, LR1132, and HD26/01 Methods. Am J Traffic Transp Eng. 2016;1(4):47-52. doi: 10.11648/j.ajtte.20160104.12

    Copy | Download

  • @article{10.11648/j.ajtte.20160104.12,
      author = {Nwakaire M. Chidozie and Chukwu C. Joshua},
      title = {Traffic Assessment for Pavement Structural Design Using RN29, LR1132, and HD26/01 Methods},
      journal = {American Journal of Traffic and Transportation Engineering},
      volume = {1},
      number = {4},
      pages = {47-52},
      doi = {10.11648/j.ajtte.20160104.12},
      url = {https://doi.org/10.11648/j.ajtte.20160104.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajtte.20160104.12},
      abstract = {Traffic surveys are means of obtaining information about the traffic characteristics of an area. The data collected is used for traffic assessment of the area for various Engineering purposes. This study was an attempt to conduct a traffic assessment for the purpose of pavement design. Three design methods: Road Note 29 (RN 29), Laboratory Report 1132 (LR 1132), and Design manual for Highways and Bridges (DMHB; HD 26/01), were adopted. Three locations along the Onitsha-Enugu expressway, a Nigerian interstate highway, were surveyed. The highest volume of commercial vehicles was observed at the Nkpor location with corresponding design traffics of 108msa, 304msa, and 92.92msa using RN 29, LR 1132, and HD 26/01 respectively. Computed design traffics for Nkpor, Awkuzu, and Kwata locations using LR 1132 were 304msa, 175msa, and 167msa respectively. These were found to be significantly higher than those computed using RN 29 and HD 26/01 due to the fact that a uniform damaging factor was computed for the entire traffic count without any form of categorization or weight impact discrimination. It was concluded that the traffic assessment method to be adopted for any pavement design purpose should be consistent with the design method to be used for the selection of pavement thicknesses.},
     year = {2016}
    }
    

    Copy | Download

  • TY  - JOUR
    T1  - Traffic Assessment for Pavement Structural Design Using RN29, LR1132, and HD26/01 Methods
    AU  - Nwakaire M. Chidozie
    AU  - Chukwu C. Joshua
    Y1  - 2016/12/21
    PY  - 2016
    N1  - https://doi.org/10.11648/j.ajtte.20160104.12
    DO  - 10.11648/j.ajtte.20160104.12
    T2  - American Journal of Traffic and Transportation Engineering
    JF  - American Journal of Traffic and Transportation Engineering
    JO  - American Journal of Traffic and Transportation Engineering
    SP  - 47
    EP  - 52
    PB  - Science Publishing Group
    SN  - 2578-8604
    UR  - https://doi.org/10.11648/j.ajtte.20160104.12
    AB  - Traffic surveys are means of obtaining information about the traffic characteristics of an area. The data collected is used for traffic assessment of the area for various Engineering purposes. This study was an attempt to conduct a traffic assessment for the purpose of pavement design. Three design methods: Road Note 29 (RN 29), Laboratory Report 1132 (LR 1132), and Design manual for Highways and Bridges (DMHB; HD 26/01), were adopted. Three locations along the Onitsha-Enugu expressway, a Nigerian interstate highway, were surveyed. The highest volume of commercial vehicles was observed at the Nkpor location with corresponding design traffics of 108msa, 304msa, and 92.92msa using RN 29, LR 1132, and HD 26/01 respectively. Computed design traffics for Nkpor, Awkuzu, and Kwata locations using LR 1132 were 304msa, 175msa, and 167msa respectively. These were found to be significantly higher than those computed using RN 29 and HD 26/01 due to the fact that a uniform damaging factor was computed for the entire traffic count without any form of categorization or weight impact discrimination. It was concluded that the traffic assessment method to be adopted for any pavement design purpose should be consistent with the design method to be used for the selection of pavement thicknesses.
    VL  - 1
    IS  - 4
    ER  - 

    Copy | Download

Author Information
  • Department of Civil Engineering, Nnamdi Azikiwe University, Awka, Nigeria

  • Department of Civil Engineering, Nnamdi Azikiwe University, Awka, Nigeria

  • Sections