Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Ramp Metering"”.
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Dynamic multi-ramp metering control with simultaneous perturbation stochastic approximation (SPSA)
Ramp metering was proven to be a viable form of freeway traffic control strategy, which could eliminate, or at least reduce, freeway congestion. In this study, the development of ramp metering control strategies, models, and constraints (e.g., meter locations, ramp storage capacities, lower and …
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Resilient operations of smart highways : platooning, ramp metering, and incident management
… types of highway operations: vehicle platooning, ramp metering, and capacity-aware routing/demand management. Our approach relies on (i) modeling partially automated traffic flow dynamics under disruptions as stochastically switching dynamical systems, (ii) analyzing their long-time properties …
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Evaluation of coordinated and local ramp metering algorithm using microscopic traffic simulation
Ramp meters are special traffic signals at the end of a freeway on-ramp that regulate the flow of traffic onto the mainline. The main purpose of ramp meters is to keep the mainline of the freeway from becoming overly congested, and to maximize the efficient use of freeway capacity. The first use of …
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Developing freeway merging calibration techniques for analysis of ramp metering In Georgia through VISSIM simulation
… techniques were developed for the analysis of ramp metering in Georgia. An analysis of VISSIM’s advanced merging and cooperative lane change settings was undertaken to determine their effects on merging behavior. Another analysis was performed to determine the effects of the safety reduction …
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Early Empirical Evidence for the Effects of Adaptive Ramp Metering on Measures of Travel Time Reliability
<p>Adaptive ramp metering (ARM) is a critical component of smart freeway corridors under an active traffic management portfolio. While improving capacity through smart corridors and application of proactive traffic management solutions is less costly and easier to deploy than freeway widening, …
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Examining Route Diversion And Multiple Ramp Metering Strategies For Reducing Real-time Crash Risk On Urban Freeways
… in this research are route diversion and ramp metering. Route diversion serves to change the traffic flow by keeping some vehicles from entering the freeway at one location and diverting them to another location where they may be more efficiently inserted into the freeway traffic stream. …
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Evaluating Ramp Metering And Variable Speed Limits To Reduce Crash Potential On Congested Freeways Using Micro-simulation
… might help in the mitigation of risk of crashes. Ramp Metering and Variable Speed Limits are two approaches which have the potential of becoming effective implementation strategies for improving the safety conditions on congested freeways. This research evaluates both these strategies in different …
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Analysis of the Effects of Adaptive Ramp Metering on Measures of Efficiency with a Proposed Framework for Safety Evaluation
<p>Adaptive ramp metering (ARM) is a widely popular intelligent transportation system (ITS) tool that boasts the ability to reduce congestion and streamline traffic flow during peak hour periods while maintaining a lower implementation cost than traditional methods such as freeway widening. This …
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Evaluation of ramp control algorithms using a microscopic traffic simulation laboratory, MITSIM
Ramp metering has emerged as an effective freeway control measure to ensure efficient freeway operations. A number of algorithms have been developed in recent years to ensure an effective use of ramp metering. As the performance of ramp metering depends on various factors (e.g. traffic volume, …
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Implementation Strategies For Real-time Traffic Safety Improvements On Urban Freeways
… strategies are Variable Speed Limit (VSL) and ramp metering. VSL are ITS devices that are commonly used to calm traffic in an attempt to relieve congestion and enhance throughput. With proper use, VSL can be more cost effective than adding more lanes. In addition to maximizing the capacity of a …
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Impact assessment through microscopic simulation: a sustainable approach to improving traffic congestion
… urban mobility and reduce traffic congestion. Ramp metering is investigated as a sustainable approach intervention and the results are discussed. The model predicts that ramp metering techniques could improve highway flows reducing average delays by at least 8%. The model also predicts that …
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A LIFE-CYCLE BENEFIT/COST ANALYSIS FRAMEWORK FOR ITS DEPLOYMENTS
… of adaptive traffic control systems (ATCS), ramp metering systems (RMS), surveillance through closed circuit TV (CCTV) cameras, and information sharing systems to achieve this objective. Life Cycle Agency Cost Agency Analysis (LCCA) of various alternative intelligent transportation strategies …
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100% container scanning : security policy implications for global supply chains
… Analysis of truck congestion suggests that the ramp metering effect of the entry gate can help to abate congestion at the scanning area.