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 20 of 34 for “"microscopic traffic simulation"”.
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Aggregate calibration of microscopic traffic simulation models
The problem of calibration of microscopic simulation models with aggregate data has received significant attention in recent years. But day-to-day variability in inputs such as travel demand has not been considered. In this thesis, a general formulation has been proposed for the problem in the …
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Calibration Procedure for a Microscopic Traffic Simulation Model
The inputs to a microscopic traffic simulation model generally include quantitative, but immeasurable data describing driver behavior and vehicle performance characteristics. Engineers often use default values for parameters such as car-following sensitivity and gap acceptance because it can be …
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A microscopic traffic simulation model for IVHS applications
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1993.
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Towards Developing an Integrated Microscopic Traffic Simulation Model for Large Road Networks
Traffic jams have become one of the key topics in the 21st century and cause immense losses in productivity, increase CO2 emissions and affect driver stress, travel time predictability and increased wear and tear on vehicles. To test possible countermeasures, optimise existing infrastructure or …
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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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Evaluation of ramp control algorithms using a microscopic traffic simulation laboratory, MITSIM
… ramp metering depends on various factors (e.g. traffic volume, downstream traffic conditions, queue override policy etc), these algorithms should be evaluated under a wide range of traffic conditions to check their applicability and performance and to ensure their successful implementation. In …
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Calibration and Comparison of the VISSIM and INTEGRATION Microscopic Traffic Simulation Models
Microscopic traffic simulation software have gained significant popularity and are widely used both in industry and research mainly because of the ability of these tools to reflect the dynamic nature of the transportation system in a stochastic fashion. To better utilize these software, it is …
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Surrogate Analysis and Calibration of Safety-Related Driver Behavior Modeling in Microscopic Traffic Simulation and Driving Simulator for Aggressive Driving
… to solve one of the most difficult problems – traffic congestion and safety. Researchers, consultants, and local officials are all attempting to solve these problems with different methods. However, it is apparent that understanding the driving behaviors on the roadway network and implementing …
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Comparison of Microscopic and Mesoscopic Traffic Modeling Tools for Evacuation Analysis
… processes can be evaluated using different simulation models. However, recently, microscopic simulation models have become a more popular tool for this purpose. The objectives of this study are to model multiple evacuation scenarios and to compare the INTEGRATION microscopic traffic …
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Modeling gap acceptance at freeway merges
… the merging gap acceptance model is affected by traffic conditions such as average speed in the mainline, interactions with lead and lag vehicles, and urgency of the merge. Transferability tests for the stability of the model parameters between the two datasets are conducted. The single level gap …
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An energy investigation of signalized network optimized by TRANSYT 7
In the traffic engineering field today, much attention is being given to the area of intersection control. The intersection has long been recognized as the most critical element in our highway system. Accidents, delay, wasted fuel and congestion are greatest at intersections. The variable having …
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Modeling influencing factors in a microscopic traffic simulator
Microscopic traffic simulation is an important tool for traffic analysis and dynamic traffic management as it enables planners to evaluate traffic flow patterns, predict and evaluate the outcome of various response plans and assists in decision making. It is a vital tool for traffic management …
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Joint calibration of a microscope traffic simulator and estimation of origin-destination flows
Microscopic Traffic simulators can be effectively used to analyze various transportation strategies (especially ITS related). However, microscopic traffic simulators need to be calibrated in order to yield meaningful results. Calibration is the process of adjusting the model parameters to closely …
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Simulation and queueing network model formulation of mixed automated and non-automated traffic in urban settings
… vehicles offer numerous benefits to highway traffic, but their impact on traffic in urban scenarios with mixed autonomous and non-autonomous traffic is less understood. This research addresses this issue by using microscopic traffic simulation to develop understanding of how traffic dynamics …
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Finding ways out of congestion for the Chicago Loop : a microscopic simulation approach
… in the U.S., has experienced a great increase in traffic congestion, which limits regional mobility, induces a huge amount of energy waste and Greenhouse Gas emissions, and impedes economic development. Due to congestion, bus reliability and travel speed has decreased significantly. Since the …
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Mitigating emissions and energy consumption for urban transportation networks : simulation-based signal control strategies
Microscopic urban traffic simulators embed the most detailed traveler behavior and network supply models. They represent individual vehicles and can therefore account for vehicle-specific technologies. These simulators can be coupled with instantaneous energy consumption and emissions models to …
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Eco-cooperative adaptive cruise control at multiple signalized intersections
Consecutive traffic signals produce vehicle stops and acceleration/deceleration maneuvers on arterial roads, which may increase vehicle fuel consumption levels significantly. Eco-cooperative adaptive cruise control (Eco-CACC) systems can improve vehicle energy efficiency using connected vehicle …
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A Modeling Approach for Evaluating Network Impacts of Operational-Level Transportation Projects
This thesis presents the use of microscopic traffic simulation models to evaluate the effects of operational-level transportation projects such as ITS. A detailed framework outlining the construction and calibration of microscopic simulation models is provided, as well as the considerations that …
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Improving traffic signal performance using high-resolution data
Traffic congestion has become a more and more severe problem for metropolitan areas all over the world. Although lots of effort has been devoted to improve the operation on major corridors, how to efficiently and effectively manage traffic based on the existing infrastructure is still a challenging …
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