Delay at Signalized Intersections under Mixed Traffic Conditions
Publication: Journal of Transportation Engineering, Part A: Systems
Volume 143, Issue 8
Abstract
Delay caused to an individual vehicle at a signalized intersection is a performance measure to assess the level of service. While dealing with delay in Indian traffic conditions, researchers generally opt for either the U.S. Highway Capacity Manual (HCM) or Webster’s delay model. However, these models, developed on the basis of homogeneous traffic conditions, yield erroneous results for developing countries where the traffic is highly heterogeneous with almost no lane discipline. In this context, the present study presents an improved delay model for signalized intersections under heterogeneous traffic conditions. The proposed model has been developed by modifying the existing HCM model on the basis of traffic data collected from seven four-legged signalized intersections across the country. Measured queue length was plotted with time and Simpson’s one-third rule was used to estimate the total delay in a cycle and average delay per vehicle. The proposed model is validated by using the data of eight other intersections and the maximum difference between the observed delay and estimated delay is found to be less than 5%.
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References
Akgüngör, A. P., and Bullen, A. G. R. (2007). “A new delay parameter for variable traffic flows at signalized intersections.” Turkish J. Eng. Environ. Sci., 31(1), 61–70.
Chaudhry, M. S., and Ranjitkar, P. (2013). “Delay estimation at signalized intersections with variable queue discharge rate.” J. East. Asia Soc. Transp. Stud., 10(0), 1764–1775.
Darma, Y., and Karim, M. (2005). “Control delay variability at signalized intersection based on HCM method.” Proc., Eastern Asia Society for Transportation Studies, 5, Japan Science and Technology Information Aggregator, Electronic, Japan, 945–958.
Dion, F., Rakha, H., and Kang, Y. S. (2004). “Comparison of delay estimates at under-saturated and over-saturated pre-timed signalized intersections.” Transp. Res. Part B: Methodol., 38(2), 99–122.
Fawaz, W., and El Khoury, J. (2016). “An exact modelling of the uniform control traffic delay in undersaturated signalized intersections.” J. Adv. Transp., 50(5), 918–932.
Hoque, S., and Imran, A. (2007). “Modification of Webster’s delay formula under non-lane based heterogeneous road traffic condition.” J. Civ. Eng., 35(2), 81–92.
Kim, S. O., and Benekohal, R. F. (2005). “Comparison of control delays from CORSIM and the highway capacity manual for oversaturated signalized intersections.” J. Transp. Eng., 917–923.
Minh, C. C., Mai, T. T., Binh, T. H., and Sano, K. (2010). “The delay estimation under heterogeneous traffic conditions.” J. East. Asia Soc. Transp. Stud., 8, 1583–1595.
Prasanna Kumar, R., and Dhinakaran, G. (2013). “Estimation of delay at signalized intersections for mixed traffic conditions of a developing country.” Int. J. Civ. Eng., 11(1), 53–59.
Quiroga, C. A., and Bullock, D. (1999). “Measuring control delay at signalized intersections.” J. Transp. Eng., 271–280.
Ratner, B. (2009). “The correlation coefficient: Its values range between +1/−1, or do they?” J. Targeting, Meas. Anal. Market., 17(2), 139–142.
Raval, N. G., and Gundaliya, P. J. (2012). “Modification of Webster’s delay formula using modified saturation flow model for non-lane based heterogeneous traffic condition.” Highway Res. J., New Delhi, 5(1), 41–47.
Sofia, G., Kadhim, A., and Khalil, S. (2014). “Development of delay model for selected signalized intersections at CBD in Sulaymaniyah City.” J. Eng. Dev., 18(5), 294–307.
Thamizh Arasan, V., and Jagadeesh, K. (1995). “Effect of heterogeneity of traffic on delay at signalized intersections.” J. Transp. Eng., 397–404.
TRB (Transportation Research Board). (1965). “Highway capacity manual.”, 2nd Ed., National Research Council, Washington, DC.
TRB (Transportation Research Board). (2010). “Highway capacity manual.”, 5th Ed., National Research Council, Washington, DC.
Varia, H. R., Dhingra, S. L., and Sikdar, P. K. (2001). “Effect of signal cycle time variation on delay at isolated intersection.” Highway Res. Bull., 64(6), 87–96.
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Published In
Journal of Transportation Engineering, Part A: Systems
Volume 143 • Issue 8 • August 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Sep 28, 2016
Accepted: Mar 17, 2017
Published online: Jun 12, 2017
Published in print: Aug 1, 2017
Discussion open until: Nov 12, 2017
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