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Title: Modelling and management of multi-modal urban traffic
Author: Li, S.
ISNI:       0000 0004 7428 9580
Awarding Body: UCL (University College London)
Current Institution: University College London (University of London)
Date of Award: 2016
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This research aims to model and manage bus regularity with consideration of the interaction between buses and surrounding traffic in an integrated multi-modal system. A parsimonious macroscopic simulation framework is first developed to estimate multi-modal road traffic conditions and the bus-traffic interaction based on the variational formulation of kinematic waves. The proposed simulation platform can capture shocks, dispersion of vehicle platoons, moving bottlenecks and traffic characteristics effectively with data collected from Central London. Second, different bus holding strategies are implemented on the proposed simulation platform in order to evaluate and compare their performance on improving bus service regularity and impact on transport system efficiency. It is shown that the two-way holding strategy performs the best in terms of regulating headway at low-traffic level. At high-traffic level, the two-way holding strategy and the forward holding strategy have a similar performance. However, the efficiency of buses and road traffic can be severely compromised due to bus holding at stops and the consequential delay on road traffic, especially under heavy traffic conditions. In order to mitigate these challenges, the third part of this thesis presents a range of signal-based bus holding strategies which are responsive to road traffic dynamics. Proposed control strategies are implemented on the proposed simulation platform to evaluate their performance. They are also compared with traditional stop-based holding strategies and numerical results suggest improved bus service regularity and transport efficiency.
Supervisor: Chow, A. ; Malki-Epshtein, L. Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available