@article{ref1,
title="An Efficient Optimization Approach to Real-Time Coordinated and Integrated Freeway Traffic Control",
journal="IEEE transactions on intelligent transportation systems",
year="2010",
author="Ghods, A.h. and Fu, Liping and Rahimi-Kian, A.",
volume="11",
number="4",
pages="873-884",
abstract="This paper tackles the problem of real-time optimal control of traffic flow in a freeway network deployed with coordinated and integrated traffic controllers. One promising approach to this problem is casting the underlying dynamic control problem in a model predictive framework. The challenge is that the resulting optimization problem is computationally intractable for online applications in a network with a large number of controllers. In this paper, a game-theoretic approach with distributed controllers is proposed to address the foregoing issue. The efficiency of the proposed method is tested for a coordinated ramp metering and variable-speed limit control applied to a stretch of freeway network. The parallel nature of the optimization algorithm makes it suitable for solving large-scale problems with high accuracy. The speed and accuracy of the proposed solution approach are examined and compared with that of the conventional optimization method in a case study to demonstrate its superior performance.<p />",
language="",
issn="1524-9050",
doi="10.1109/TITS.2010.2055857",
url="http://dx.doi.org/10.1109/TITS.2010.2055857"
}