Evaluation of Performance Measures for Two-Lane Intercity Highways under Mixed Traffic Conditions
Publication: Journal of Transportation Engineering
Volume 141, Issue 10
Abstract
Traffic performance of a highway is expressed in terms of level of service (LOS). It is a major input to important decisions on public fund investments. Because of its unique operational characteristics, evaluation of traffic performance on two-lane highways is a critical task. This research examines the applicability of various performance measures for two-lane highways under mixed traffic conditions and assigns threshold values for different levels of service based on the best performance measure observed. Graphical and statistical analyses are carried out among the six most popular performance measures and traffic volume, but none of the considered measures are found to be reliable. A new parameter, number of followers (NF), which is defined as the number of vehicles traveling with a gap less than 2.6 s, is found to have good correlation with traffic volume but it does not reflect the true congestion conditions of a roadway. Therefore, the NF is further modified to the number of followers as a proportion of capacity (NFPC), and this parameter demonstrates a very strong correlation with traffic volume. Threshold values are proposed for the different LOS based on NFPC for mixed traffic conditions.
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Acknowledgments
The work reported in this paper is the part of on-going research project on “Development of Indian Highway Capacity Manual (INDO-HCM),” sponsored by CSIR-CRRI, New Delhi, India. The financial assistance provided by the sponsoring agency for traffic studies is gratefully acknowledged.
References
Al-Kaisy, A., and Durbin, C. (2008). “Evaluating new methodologies for estimating performance on two-lane highways.” Can. J. Civ. Eng., 35(8), 777–785.
Al-Kaisy, A., and Karjala, S. (2008). “Indicators of performance on two-lane rural highways.”, 87–97.
Bessa, J. E., Jr., and Setti, J. R. (2011). “Derivation of ATS and PTSF functions for two-lane, rural highways in Brazil.” Procedia Soc. Behav. Sci., 16, 282–292.
Chandra, S., and Kumar, U. (2003). “Effect of lane width on capacity under mixed traffic conditions in India.” J. Transp. Eng., 155–160.
Dixon, M., Sarepali, S., and Young, K. (2002). “Field evaluation of highway capacity manual 2000; analysis procedures for two lane highways.”, 125–132.
Harwood, D. W., May, A. D., Anderson, I. B., Leiman, L., and Archilla, A. R. (1999). “Capacity and quality of service of two-lane highways.”, Midwest Research Institute, Univ. of California, Berkeley, CA.
Hashim, I. H., and Abdel-Wahed, T. A. (2011). “Evaluation of performance measures for two lane roads in Egypt.” Alexandria Eng. J., 50, 245–255.
HRB (Highway Research Board). (1965). “Highway capacity manual.”, National Research Council, Washington, DC.
Luttinen, R. T. (2001a). “Capacity and level of service on finnish two-lane highways.”, Finnish Road Administration, Traffic and Road Engineering, Helsinki, Finland.
Luttinen, R. T. (2001b). “Percent time spent following as a performance measure for two-lane highways.”, 52–59.
Moreno, A. T., Lorca, C., Sayed, T., and Garcia, A. (2014). “Field evaluation of traffic performance measures for two-lane highways in Spain.” Paper 14-0847, 93rd Transportation Research Board Annual Meeting, Transportation Research Board, Washington, DC.
Morral, J., and Werner, A. (1988). “Measuring level of service of two-lane highways by overtakings.”, 62–69.
MORT&H (Ministry of Road Transport and Highways). (2014). “Annual report 2012-2013.” Government of India, New Delhi, India.
Saha, P., Sarkar, A. K., and Pal, M. (2013). “Field evaluation of percent time spent following on two-lane highways under mixed traffic simulation.” Int. J. Civ. Eng. Build. Mater., 3(4), 192–198.
TRB (Transportation Research Board). (1985). “Highway capacity manual.”, National Research Council, Washington, DC.
TRB (Transportation Research Board). (2000). “Highway capacity manual.”, National Research Council, Washington, DC.
TRB (Transportation Research Board). (2010). “Highway capacity manual.”, National Research Council, Washington, DC.
Van As, S. C. (2007). “South African highway capacity research.” TRB Workshop 153: South African Highway Technology and Practice, South African National Roads Agency, Pretoria, South Africa.
Van As, S. C., and Van Niekerk, A. (2004). “The operational analysis of two-lane rural highways.” Proc., 23rd Southern African Transport Conf. (SATC 2004), National Institute for Transport and Road Research (NITRR), CSIR, Pretoria, South Africa.
Wang, C., and Morrall, J. F. (1987). “Two-lane highway level of service and simulation: Executive summary prepared for Alberta transportation.” Alberta Transportation and Utilities, Research and Development, Edmonton, AB, Canada.
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Published In
Journal of Transportation Engineering
Volume 141 • Issue 10 • October 2015
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Oct 13, 2014
Accepted: Mar 30, 2015
Published online: May 22, 2015
Published in print: Oct 1, 2015
Discussion open until: Oct 22, 2015
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