A Local Non-restrictive Ramp Metering Strategy Based on Stochasticity of Capacity
نویسندگان
چکیده
منابع مشابه
Non-Local Feedback Ramp Metering Controller Design
This paper treats the problem of controlling large freeway systems through ramp metering to enhance their efficiency. Following a rigorous discretization methodology, an extension of the CTM model to inhomogeneous freeways with on and off ramps is proposed. Based on passivity theory and the piecewise affine formulation of this model, an LMI formulation is developed to design non-local feedback ...
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One of the major criticisms of ramp-metering has been the delay caused on the ramps because of the queues created by ramp control strategies. However, recently, several researchers proposed strategies that explicitly take into account ramp queues when determining metering rates. In this paper, an isolated “feedback” based ramp-metering strategy using modeling is presented. In addition to the re...
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The objective of this study is to determine whether ramp meters increase the capacity of active freeway bottlenecks, and if they do, how. The traffic flow characteristics at twenty-seven active bottlenecks in the Twin Cities have been studied for seven weeks without ramp metering and seven weeks with ramp metering. A series of hypotheses regarding the relationships between ramp metering and the...
متن کاملDevelopment and Evaluation of Online Estimation Methods for a Feedback-Based Freeway Ramp Metering Strategy
The critical density of a freeway link is subject to changes over time owing to such circumstances as environmental conditions (snow, rain, etc.) and traffic incidents. Because of the critical density’s impacts on the performance of some ramp metering strategies that make use of it as a threshold value for control action, it is necessary to trace the real value of the critical density. Hence, m...
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ژورنال
عنوان ژورنال: Transportation Research Procedia
سال: 2016
ISSN: 2352-1465
DOI: 10.1016/j.trpro.2016.06.050