Chow, A.H.F.;
(2007)
User equilibrium, system optimum, and externalities in
time-dependent road networks.
Presented at: 86th Annual meeting of the Transportation Research Board, Washington D.C., USA.
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Abstract
This paper develops a comprehensive framework for analysing and calculating user equilibrium, system optimum, and externalities in time-dependent road networks. Under dynamic user equilibrium, traffic is assigned such that for each origin-destination pair in the network, the individual travel costs experienced by each traveller, no matter which combination of travel route and departure time he/she chooses, are equal and minimal. The system optimal flow is determined by solving a state-dependent optimal control problem, which assigns traffic such that the total system cost of the network system is minimized. The externalities are derived by using a novel sensitivity analysis. The analyses developed in this paper can work with general travel cost functions. Numerical examples are provided for illustration and discussion. Finally, some concluding remarks are given.
| Type: | Conference item (Presentation) |
|---|---|
| Title: | User equilibrium, system optimum, and externalities in time-dependent road networks |
| Event: | 86th Annual meeting of the Transportation Research Board |
| Location: | Washington D.C., USA |
| Dates: | 21-25 January 2007 |
| Open access status: | An open access version is available from UCL Discovery |
| Language: | English |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/3375 |
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