Dynamic Traffic Simulation for Traffic Congestion Problem Using an Enhanced Algorithm

Traffic congestion has become a major problem in many countries. One of the main causes of traffic congestion is due to road merges. Vehicles tend to move slower when they reach the merging point. In this paper, an enhanced algorithm for traffic simulation based on the fluid-dynamic algorithm and kinematic wave theory is proposed. The enhanced algorithm is used to study traffic congestion at a road merge. This paper also describes the development of a dynamic traffic simulation tool which is used as a scenario planning and to forecast traffic congestion level in a certain time based on defined parameter values. The tool incorporates the enhanced algorithm as well as the two original algorithms. Output from the three above mentioned algorithms are measured in terms of traffic queue length, travel time and the total number of vehicles passing through the merging point. This paper also suggests an efficient way of reducing traffic congestion at a road merge by analyzing the traffic queue length and travel time.




References:
[1] The Columbia Electronic Encyclopedia, 6th ed. Copyright ┬® 2007,
Columbia University Press. "Effects on Health and the Environment",
Available: http://www.infoplease.com/ce6/sci/A0856526.html
[2] Richard Reese ,"Oil And The Future" [Online], Available:
http://www.eco-action.org/dt/oilfut.html
[3] BBC News, "Heavy traffic bad for your heart", Available:
http://news.bbc.co.uk/1/hi/health/3761012.stm. [Accessed 21st October,
2004].
[4] R. Shreckengost, "Dynamic Simulation Models: How Valid Are They",
ÔÇÿBook Dynamic Simulation Models: How Valid Are They-, 1985.
[5] Edward Lieberman, A.K.R., "Traffic Simulation", ÔÇÿBook Traffic
Simulation- (edn.), pp. Chapter 10, 11-23.
[6] G. Bretti, R. Natalini, and B. Piccoli, "Numerical algorithms for
simulations of a traffic model on road networks", J. Comput. Appl.
Math., 2007, 210, (1-2), pp. 71-77
[7] Gabriella Bretti, "A Fluid-dynamic Model for Traffic Flow on a Road
Network", Istituto per le Applicazioni del Calcolo, M. Picone (IAC),
March 2005.
[8] M. J. Lighthill, G. B. Whitham: "On Kinematic Waves. I. Flood
Movement in Long Rivers", Proceedings of the Royal Society of
London. Series A, Mathematical and Physical Sciences, Vol. 229, No.
1178, pp. 281-316
[9] Wen-Long Jin, "A Kinematic Wave Theory of Lane-changing Vehicular
Traffic", Institude id transportation Studies, University of California,
February 2008.
[10] R. L. Bertini and M. J. Cassidy,"Some observed queue discharge
features at a freeway bottleneck downstream of a merge." Transportation
Research A, 36 (8), 2002, 683-697.
[11] Wikipedia, "Traffic Congestion", Available:
http://en.wikipedia.org/wiki/Traffic_congestion. [Accessed March 28,
2008]
[12] U.S. Federal Highway Administration, "Traffic Congestion and
Reliability: Trends and Advanced Strategies for Congestion Mitigation."
Sept. 2005.
[13] A. Carlos F. Daganzo, "Remarks on Traffic Flow Modelling and Its
Applications" Proc. Traffic and Mobility Simulation, Economics and
Environment Conference, 105-115, Aachen, Germany, Springer-Verlag,
New York, N.Y., 1999.
[14] Jean-Baptiste Lesort, "Transportation and Traffic Theory", International
Symposium on Transport & Traffic Theory, Lyon France, 1996.
[15] Martin Treiber, "Microsimulation of road traffic", Available:
http://vwitme011.vkw.tu-dresden.de/~treiber/MicroApplet/. [Accessed
25th July 2005].