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 67 for “"Traffic Assignment"”.
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Scalability of dynamic traffic assignment
… analyze the computational performance of Dynamic Traffic Assignment (DTA) models and provides solution techniques to improve their scalability for on-line applications for large-scale networks. DTA models for real-time use provide short-term predictions of network status and generate route …
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The multi-modal traffic assignment problem.
Thesis. 1979. Ph.D.--Massachusetts Institute of Technology. Alfred P. Sloan School of Management.
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Demand simulation for dynamic traffic assignment
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1997.
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On-line calibration for dynamic traffic assignment
(cont.) application, the EKF has more desirable properties than the UKF. Furthermore, the Limiting EKF provides accuracy comparable to that of the best algorithm (EKF), but with computational complexity which is order(s) of magnitude lower than the other algorithms.
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Off-line calibration of Dynamic Traffic Assignment models
… collect and store extensive network-wide traffic data. Dynamic Traffic Assignment (DTA) models have also been developed for a variety of dynamic traffic management applications. Such models are designed to estimate and predict the evolution of congestion through detailed models and …
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Estimation of origin-destination flows for dynamic traffic assignment
… estimation is a critical component of a Dynamic Traffic Assignment system in that it determines the frequencies of drivers' trips through a network. The OD estimation method presented here allows for tunable optimization to three classes of objectives: Assigned traffic flows, deviation from …
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Observability of Origin-Destination matrices for Dynamic Traffic Assignment
… and well-researched problems in Dynamic Traffic Assignment (DTA) systems. In practice, more often than not, number of sensors are far less than the number of potential O-D pairs, and hence this problem is modeled in an optimization framework as function of historical estimates of O-D …
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Application of user equilibrium traffic assignment in evacuation modelling
… or the all-or-nothing method to assign the traffic on to the network. The major effort in this research is to include the user equilibrium assignment method to reduce the evacuation times and to improve highway network performance. Evacuation routes, number of links used, and evacuation …
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Calibration of mesoscopic traffic simulation models for dynamic traffic assignment
Thesis (S.M. in Transportation)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2002.
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A state-of-the-art report on statewide traffic assignment models
Digitized by Kansas Correctional Industries
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A state-of-the-art report on statewide traffic assignment models
Digitized by Kansas Correctional Industries
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Optimal adaptive routing and traffic assignment in stochastic time-dependent networks
… of the problem. A variant pertinent to road traffic networks is studied in detail, where a discrete joint distribution of link travel times is used to accommodate the most general stochastic dependency among link travel times, and the access to perfect online information about link travel …
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Calibration of the demand simulator in a dynamic traffic assignment system
… and driver route choice models within a Dynamic Traffic Assignment (DTA) system using several days of traffic sensor data. The methodology for the calibration of the O-D estimation module is based on an existing framework adapted to suit the sensor data usually collected from traffic networks. …
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Development of a dynamic traffic assignment system for short-term planning applications
… it in the context of an existing dynamic traffic assignment system, DynaMIT. The methodological framework captures the day-to-day evolution of traffic. Furthermore, it models traveler behavior and network performance, in response to special events and situations such as incidents, weather …
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Algorithmic and implementation aspects of on-line calibration of Dynamic Traffic Assignment
… algorithms for the online calibration of Dynamic Traffic Assignment (DTA). The thesis presents two formulations to on-line calibration: 1) The classical statespace formulation and 2) The direct optimization formulation. Extended Kalman Filter (EKF) is presented and validated under the state-space …
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Continuous time algorithms for a variant of the dynamic traffic assignment problem
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2001.
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Evaluation of dynamic traffic assignment : demand estimation and impacts of traveler information
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1999.
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Calibration of dynamic traffic assignment models with point-to-point traffic surveillance
… of demand and supply simulators within a Dynamic Traffic Assignment (DTA) system is critical for the provision of consistent travel information and efficient traffic management. Emerging traffic surveillance devices such as Automatic Vehicle Identification (AVI) technology provide a rich source of …
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Applying heuristic traffic assignment in natural disaster evacuation: a decision support system
… goal of this research is to develop a heuristic traffic assignment method to simulate the traffic flow of a transportation network at a real-time speed. The existing assignment methods are reviewed and a heuristic path-recording assignment method is proposed. Using the new heuristic assignment …
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Routing problems in stochastic time-dependent networks with applications in dynamic traffic assignment
… in transportation networks in general, and traffic networks in particular. The overall objective of this thesis is to study implications and significance of stochasticity in the development of models and algorithms for dynamic traffic flows in road networks. There are two major parts in this …
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