OPAC: A demand-responsive strategy for traffic signal control

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Optimization Policies for Adaptive Control (OPAC) is a computational strategy for real-time demand-responsive traffic signal control. It has the following features: (a) It provides performance results that approach the theoretical optimum, (b) it requires on-line data that can be readily obtained from upstream detectors, (c) it is suitable for implementation on existing microprocessors, and (d) it forms a building block for demand-responsive decentralized control in a network. Studies undertaken in the development of this strategy and the testing of its performance via the NETSIM simulation model are described.

Original languageEnglish
Pages (from-to)75-81
Number of pages7
JournalTransportation Research Record
Issue number906
StatePublished - 1983
Externally publishedYes


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