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Modelling and Simulation in Engineering
Volume 2012 (2012), Article ID 639865, 8 pages
Research Article

Analyzing the Diverging Diamond Interchange Using Discrete Event Simulation

1Department of Civil Engineering, University of Alabama in Huntsville, Huntsville, AL 35899, USA
2Center for Management and Economic Research, University of Alabama in Huntsville, Huntsville, AL 35899, USA
3Department of Computer Science, University of Hamburg, Vogt-Keolln-Straße 30, 22527 Hamburg, Germany

Received 23 April 2012; Revised 19 October 2012; Accepted 20 October 2012

Academic Editor: Azah Mohamed

Copyright © 2012 Michael Anderson et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The diverging diamond interchange (DDI) can improve traffic flow by limiting the number of phases in the traffic signals and improve safety by eliminating left turns. A few instillations of these interchanges have been constructed and there is great potential to construct more. In an effort to develop a methodology to evaluate these interchanges, this paper presents the development of a discrete event simulation model of the diverging diamond interchange (DDI). Specific emphasis is on using simulation to model the DDI, a description of the operation of the simulation model, and using simulation to understand the operation of the DDI. The paper concludes that the use of the simulation package allows for rapid evaluation of the DDI and demonstrates that this interchange design will not work in all locations.