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.
Results
Showing 1 to 20 of 33 for “"Traffic simulator"”.
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Calibration of a microscopic traffic simulator
… calibration study was performed on a microscopic traffic simulator- MITSIM. An optimization based framework was developed for calibration. Car- Following model parameters were identified for calibration and experimental design methodology was used to determine the set of sensitive parameters. …
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Implementation of a multi-process traffic simulator system
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1995.
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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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Scenarios discovery : robust transportation policy analysis in Singapore using microscopic traffic simulator
… future states due to deep uncertainty in traffic demand. This thesis focuses on exploring the application of model-based decision support techniques which characterize a set of future states that represent the vulnerabilities of the proposed policy. Vulnerabilities here are interpreted as …
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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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A novel spatiotemporal framework for efficient traffic prediction and visualization
This thesis proposes an efficient traffic prediction framework to estimate congestion at intersections depending on neighboring road links. The framework encompasses three major components, data extraction, Bayesian Linear Regression-based traffic prediction model, and an interactive map-based …
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Simulation and verification of autonomous route planning behavior
This thesis presents a new dynamic traffic simulator called DUST, used to investigate new foundational theory for autonomously reconfigurable cyber-physical systems in the presence of unexpected disruptions. We focus on transportation networks to develop our methodologies since it is a prime …
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Performance evaluation of routing protocols using NS-2 and realistic traces on driving simulator
… model employed. In this thesis, a sophisticated traffic simulator capable of generating realistic vehicle traces is introduced. Combined with network simulator NS-2, we used this tool to evaluate the general performance of several routing protocols and studied the impact of intersections on …
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The Use of Plant Growth Regulators to Improve the Traffic Tolerance and Repair of Overseeded Bermudagrass
… during the fall acclimation period tests the traffic tolerance of bermudagrass. Exogenous applications of synthetic cytokinins or cytokinin-enhancing plant growth regulators (PGRs), such as trinexapac-ethyl, may improve the traffic tolerance of "Patriot" and "Tifsport" hybrid berudagrasses …
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Dynamic load balancing of parallel road traffic simulation
… for parallel execution of microscopic road traffic simulations. Urban road traffic simulation presents irregular, and dynamically varying distributed computational load for a parallel processor system. The dynamic nature of road traffic simulation systems lead to uneven load distribution …
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Improving pilot understanding of TCAS through the traffic situation display
… thesis is to improve pilot understanding of the Traffic alert and Collision Avoidance System (TCAS) by changing the Traffic Situation Display (TSD). This is supported by two objectives. The first objective is to create an integrated, realistic air traffic environment. This serves as an …
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Benefits of emerging transportation technologies : simulation analysis and policy issues
… element of such quantification and analysis is traffic simulation. MITSIMLab, a microscopic traffic simulator, has been recently enhanced to replicate transportation technologies and applications such as traffic signal priority and advanced vehicle location for transit. In addition, the existing …
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Distributed autonomous intersection management with neuro-evolution
… task difficulty and problem exposure. A traffic simulator was developed and the hyper-parameters were used to evolve car controllers, which where then tested on unseen tasks. We show that certain key combinations of hyper-parameters yield exceptional results, but that direct correlations …
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Modeling lane-changing behavior in presence of exclusive lanes
… existing lane-changing model using a microscopic traffic simulator in an HOV lane situation. The results indicate that the proposed model is significantly better than the previous model.
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Issues and challenges of federating between different transportation simulators
As the container traffic at the Port of Savannah is expected to increase, its impacts need to be evaluated to address major concerns regarding the roadway network surrounding the port and the overall operations of the port. A federation of two disparate simulators was created in order to model the …
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The Performance of Realistic Simulation over Vehicular Networks
… with other vehicles can help avoid accidents and traffic congestion. Vehicular Ad-hoc Network (VANET) is a network that involves moving vehicles within certain range of distance to communicate with each other, thus forming a network. A VANET turns every participating vehicle into a wireless router …
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Exploration of algorithms for calibration and optimization of transportation networks
… of parameters, computational burden of the simulator, and stochasticity of the simulation process. Different algorithms to address the calibration problem are reviewed, and the WSPSA algorithm is showed best performance in offline calibration of a DTA model. This algorithm is an extension to …
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Integrating driving behavior modeling
… plans are defined by the various gaps in traffic in the target lane. Drivers adapt their acceleration behavior to facilitate the lane change using the target gap. Hence, interdependencies between lane changing and acceleration behaviors are captured. The lane changing portion of the model …
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Autonomous aggressive driving: theory & experiments
… able to improve the vehicle's active safety and traffic efficiency in the development of autonomous vehicles. This dissertation starts from the system modeling, namely, driver modeling, vehicle modeling and traffic system modeling, for which we implement different Kalman type filters for …
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Assessment framework for wireless V2V communication-based ITS applications
… A modelling framework based on a microscopic traffic simulator is presented in this thesis to explore the effects of wireless Vehicle-to-Vehicle (V2V) communication based ITS applications on traffic performance. Microscopic traffic simulators describe the interaction between drivers and …
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