Simulation-based robust optimization for signal timing and setting.
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2009-12-30
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Alternative Title:Final report to the Center for Multimodal Solutions for Congestion Mitigation (CMS)
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Edition:Final report.
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Abstract:The performance of signal timing plans obtained from traditional approaches for
pre-timed (fixed-time or actuated) control systems is often unstable under fluctuating traffic
conditions. This report develops a general approach for optimizing the timing of pre-timed
signals along arterials under day-to-day demand variations or uncertain traffic future growth.
Based on a cell-transmission representation of traffic dynamics, a stochastic programming model
is formulated to determine cycle length, green splits, phase sequences and offsets to minimize the
expected delay incurred by high-consequence scenarios of traffic demand.
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