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 6 of 6 for “"OD estimation"”.
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Dynamic OD Estimation with Bluetooth Data Using Kalman Filter
… and ATIS are dynamic travel times and dynamic OD matrices. Bluetooth devices detection technology has been increasingly used to track vehicle movements on the network. This possibility naturally raises the question of whether this information can be used to improve the dynamic estimation of OD …
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Estimation of origin-destination flows for dynamic traffic assignment
This thesis proposes a framework and method for dynamic origin-destination demand estimation. OD 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 …
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Multi-modal public transport modelling under traffic disruptions
This study presents a novel integrated multi-modal modelling framework for dynamic public transport (PT) networks, addressing the limitations of single-mode analysis in disruption impact assessment. Our approach extends the traditional Gravity Models-based OD estimation method by incorporating …
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Joint calibration of a microscope traffic simulator and estimation of origin-destination flows
… Calibration is the process of adjusting the model parameters to closely replicate the observed behavior. In this thesis, a module for joint calibration of a microscopic traffic simulator along with estimation of Origin- Destination (OD) flows has been developed. The developed framework takes …
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Scalability of dynamic traffic assignment
… 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 guidance for travelers. The …
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Multiclass Origin-Destination Estimation Using Multiple Data Types
… This thesis proposes a bilevel optimization model and corresponding solution method for static multi-class O-D estimation using various types of data. Limited memory BFGS method with bounded constraints is used for solving the upper level optimization, which is used to derive O-D table entries …