Study on the Effects of Pavement Condition on Level of Service of the Road Segments

Authors

  • Dr. Duwa Hamisi Chengula Mbeya University of Science and Technology, College of Engineering and Technology, Department of Civil Engineering. P.o.Box 131 Mbeya, Tanzania.

Keywords:

Level of Service, Pavement condition index, quality of the road, pavement defects, patching, ruts, pavement cracks, traffic volume, free flow speed, percentage free flow speed, riding comfort

Abstract

The study was conducted to investigate effects of pavement condition index on level of service of the road segments in Mbeya region Tanzania. Field measurements of vehicle speeds, vehicle volume, lane width, should width, vertical grades and side clearance, were conducted for the purpose of determining level of services (LOS) of the road segments. Pavement defects were identified and defects quantities and severity were measured and analyzed for the purpose of determining pavement condition indices (PCI). For this study five two-lane class III highway road segments were analyzed to determine LOS and PCI.  The results indicated that LOS for the road segments ranged from C to E. LOS C was for Mwahala–Igawilo road segment, LOS D was for Kabwe–Isanga and Uyole–Nanenane and LOS E was for Mbalizi–Ifisi and Iwambi–Mbalizi. The LOS C is characterized by restricted flow and level of comfort and convenience are noticeably declining and LOS E is unstable flow at or near capacity with poor levels of comfort and convenience. In order the vehicles to operate at high level of comfort and convenience the road geometric features of the road segments for this study needs to be upgraded to meet minimum requirements but also introduction of climbing lanes in areas with steep slopes. For pavement condition, the current PCI rating for Mwahala–Igawilo was determined to be good, for Kabwe–Isanga and Uyole–Nanenane was fair and for Mbalizi–Ifisi and Iwambi–Mbalizi was very poor. From the PCI rating it was investigated that, Mwahala–Igawilo road segment requires preventive maintenance, for Kabwe – Isanga and Nanenane – Uyole requires rehabilitation and for Mbalizi–Ifisi and Iwambi–Mbalizi requires major rehabilitation or reconstruction.   The effect of pavement condition on LOS for this study is expressed in equation as PFFS = 0.243PCI + 55.5 where percentage free flow speed (PFFS) is the measure of LOS for two lane class III highways. From the equation it is indicated that as pavement condition deteriorate, the LOS is also deteriorate. It is important to incorporate pavement condition in the determination of LOS of the road segments.

References

. ASTM D6433-11, 2011: Standard Practice for Roads and Parking Lots, Pavement Condition Index Surveys, ASTM International, West Conshohocken, PA, 2011.

. Farah K. Hussain and Hamid A. E. Al-Jameel, 2018: Investigating Distress Types and PCI for selected road segments in Al-Muthana City. International Journal of Scientific & Engineering Research Volume 9, Issue 12, December-2018 988 ISSN 2229-5518. IJSER © 2018 http://www.ijser.org

. Transportation Research Board, 2010: Highway capacity manual (HCM). National government publication. https://doi.org/10.1061/(ASCE)HY.1943-7900.0000746.

. Teresa M. Adams, Ernie Wittwer, John O’Doherty, Marie Venner and Kyle Schroeckenthaler, 2014: Guide to Level of Service (LOS) Target Setting for Highway Assets, FINAL REPORT. Prepared for the National Cooperative Highway Research Program (NCHRP 14-25) Transportation Research Board of the National Academies. Department of Civil and Environmental Engineering College of Engineering, University of Wisconsin-Madison.

. Chun Yip Chan, Baoshan Huang, Xuedong Yan and Stephen Richards, 2010: Investigating effects of asphalt pavement conditions on traffic accidents in Tennessee based on the pavement management system (PMS). Journal of Advanced Transportation, 2010; 44: 150–161, www.interscience.wiley.com. DOI: 10.1002/atr.129.

. Vladan Ilić, 2015: International conference, Contemporary achievements in civil engineering. Anniversary Faculty of Civil Engineering Subotica, SERBIA. DOI: 10.14415/konferencijaGFS 2015.062, УДК: 656.1.052.43:625.022.

. P. K. Bhuyan & Minakshi Sheshadri Nayak (2013): A Review on Level of Service Analysis of Urban Streets, Transport Reviews: A Transnational Transdisciplinary Journal, 33:2, 219-238, http://dx.doi.org/10.1080/01441647.2013.779617.

. Kay Fitzpatrick, Paul Carlson, Marcus A. Brewer, Mark D. Wooldridge and Shaw-Pin Miaou, 2003: Design Speed, Operating Speed, and Posted Speed Practices, Highway and Facility Design. National Cooperative Highway Research Program. NCHRP Report 504. Research Sponsored by the American Association of State Highway and Transportation Officials in Cooperation with the Federal Highway Administration

. Pramen P. Shrestha and K. Joseph Shrestha, 2017: Factors associated with crash severities in built-up areas along rural highways of Nevada: A case study of 11 towns. Journal of traffic and transportation engineering (English edition) 2017; x(x):1e7. Available online at www.sciencedirect.com, journal homepage: www.elsevier.com/locate/jtte.

. Samson R. Namala, Graduate Student and Margaret J. Rys, 2006: Automated Calculation of Passing Sight Distance Using Global Positioning System Data. K-TRAN: KSU-03-2.

. John D. Zegeer, Mark Vandehey, Miranda Blogg, Khang Nguyen and Michael Ereti, 2008: Default Values for Highway Capacity and Level of Service Analyses. National Cooperative Highway Research Program. NCHRP REPORT 599.

. AASHTO, 2001: A Policy on Geometric Design of Highways and Streets. American Association of State Highway and Transportation Officials (AASHTO), 444 North Capitol Street, N.W., Suite 249, Washington, D.C. 20001. ISBN: 1-56051-156-7.

. Donald L. Basham, James W Wright, Kathleen I. Ferguson and Get W. Moy, 2004: Unified Facilities Criteria (UFC), Pavement Maintenance Management. UFC 3-270-08

. Gary E. Elkins, Travis M. Thompson, Jonathan L. Groeger, Beth Visintine, and Gonzalo R. Rada, 2013: Reformulated Pavement Remaining Service Life Framework. Report No. FHWA-HRT-13-038. Grant No. DTFH61-08-C-00033.

. Duwa Hamisi Chengula 2018: Study on Performance of Road Signs and Markings along TANZAM Highway in Mbeya Region, Tanzania. International Journal of Sciences: Basic and Applied Research (IJSBAR) (2018) Volume 39, No 1, pp 34-50.

. Douglas H. Robertson, Joseph E. Hummer and Donna C. Nelson, 1994: Manual of Transportation Engineering Studies, Second Edition. Institute of Transportation Engineers. ISBN: ISBN-13: 978-1-933452-53-1; ISBN-10: 1-933452-53-6.

. Javid Ahmad Khan and Shahid Rasool Tarry, 2018: Speed spot study by comparing time mean speed and space mean speed: A case study. Department of Civil Engineering, Lovely Professional University, GT Road, Phagwara, Jalandhar-Delhi, Punjab, India. International Journal of Advanced Science and Research, Volume 3; Issue 1; January 2018; Page No. 97-102. ISSN: 2455-4227.

. Fareed M.A. Karim, Khaled Abdul Haleem Rubasi and Dr Ali Abdo Saleh, 2016: The Road Pavement Condition Index (PCI) Evaluation and Maintenance: A Case Study of Yemen. Organization, Technology and Management in Construction 2016; 8: 1446–1455. DOI 10.1515/otmcj-2016-0008.

. Linda M. Pierce, Ginger McGovern and Kathryn A. Zimmerman, 2013: Practical Guide for Quality Management of Pavement Condition Data Collection, U.S. Department of Transportation, Federal Highway Administration, 1200 New Jersey Avenue, SE, Washington, DC 20590.

Downloads

Published

2020-09-05

How to Cite

Chengula, D. D. H. . (2020). Study on the Effects of Pavement Condition on Level of Service of the Road Segments. International Journal of Sciences: Basic and Applied Research (IJSBAR), 54(1), 118–137. Retrieved from https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/11650

Issue

Section

Articles