Utilization-Aware Adaptive Back-Pressure Traffic Signal Control
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Utilization-Aware Adaptive Back-Pressure Traffic Signal Control_dSpace.pdf
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863.63 KB
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Checksum (MD5)
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Author(s)
Chang, Wanli
Chakraborty, Samarjit
Annaswamy, Anuradha
Date Issued
October 7, 2015
Abstract
Back-pressure control of traffic signal, which computes
the control phase to apply based on the real-time queue
lengths, has been proposed recently. Features of it include (i)
provably maximum stability, (ii) low computational complexity,
(iii) no requirement of prior knowledge in traffic demand, and
(iv) requirement of only local information at each intersection.
The latter three points enable it to be completely distributed
over intersections. However, one major issue preventing backpressure
control from being used in practice is the utilization
of the intersection, especially if the control phase period is
fixed, as is considered in existing works. In this paper, we
propose a utilization-aware adaptive algorithm of back-pressure
traffic signal control, which makes the duration of the control
phase adaptively dependent on the real-time queue lengths
and strives for high utilization of the intersection. While
advantages embedded in the back-pressure control are kept,
we prove that this algorithm is work-conserving and achieves
the maximum utilization. Simulation results on an isolated
intersection show that the proposed adaptive algorithm has
better control performance than the fixed-period back-pressure
control presented in previous works.
Subjects
Adaptive Control
Signal Control
Utilization Aware
Terms of Use
Attribution-NonCommercial-NoDerivs 3.0 United States
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