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This paper studies a control strategy that is applicable to local ramp metering in the presence of random-location bottlenecks (RLB) downstream of any metered on-ramp. With the support of Vicroads (Highway Department of Victoria State, Australia), local ramp metering in the RLB case has recently been investigated, aiming to design appropriate and practicable ramp metering approaches. A related control...
In a recent series of articles with largely identical contents and results, some claims are raised about the pertinence and performance of the well-known and widely field-applied local ramp metering algorithm ALINEA and of some extended versions thereof. The expressed claims are based on simulation results with a self-made microscopic simulator. This paper shows that the produced simulation results...
The paper addresses a macroscopic simulation investigation of the performance of feedback local ramp-metering controller ALINEA and its PI (Proportional-Integral) extension for freeway stretches with a bottleneck at a distant location downstream of the metered on-ramp. The investigation indicates that the ALINEA ramp metering performance deteriorates in the distant downstream bottleneck case, while...
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