Optimum Cycle Time Prediction for Signalized Intersections at Baghdad City

Year 2012, Volume: 9 Issue: 2, - , 01.04.2012

Mehdi İ. Al-kubaisi

Abstract

This research describes a study of vehicle behavior and delay at signalized
intersections. The objective was to develop a regression model based on simulation model
developed from observed traffic behavior. The developed simulation model has reasonably
wide range of applications. To illustrate that within the scope of this research a regression
model for the prediction of optimum cycle times, which minimizes vehicle delay at signalized
intersection, was developed. The developed regression model is implicitly based on
the sampled driving practice currently used in Baghdad.The OSCADY/3 software package was used to verify and calibrate the developed model
outputs of vehicle delay. The obtained results are presented in this paper. The comparison
suggested the existence of harmony between the produced and predicted results. Finally
the predicted model is used to evaluate the traffic performance at an existing intersection
by simulating its observed data. Based on the obtained results, suggestions were made to
reduce vehicle delay at this particular function.

Keywords

Traffic behavior, optimum cycle time, simulation model, delay

References

• [1] M. Al-Kubaisi, Development of Computer Simulation Program to Study the Driver Behaviour for Signalized Intersections at Baghdad City, Master Thesis, University of Baghdad, Baghdad, Iraq 2000.
• [2] R. M. Kimber, N. B. Hounsell and M. McDonald , The Prediction of Saturation Flows for Single Road Junctions Controlled by Traffic Signals, Transport Research Laboratory, Wokingham, GB 1986.
• [3] F. V. Webster, Experiment on saturation flow of right-turning vehicles at traffic signals, Traffic Engineering and Control 7 (1964), 427–434.
• [4] M. R. Crabtree and S. Harrison, OSCADY/3, User Guide, Application Guide 22, Transport Research Laboratory, Wokingham, GB 1993.