Bus dispatching at timed transfer transit stations using bus tracking technology |
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Institution: | 1. Department of Urban Management, Kyoto University, Japan;2. Transport Research Institute, Edinburgh Napier University, U.K;3. Institute for Transport Studies, University of Leeds, U.K.;1. Centre for Transport Studies, University College London, London WC1E 6BT, United Kingdom;2. Research Center of Intelligent Transportation System, Sun Yat-sen University, Guangzhou 510006, China |
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Abstract: | A timed transfer terminal synchronizes the arrival of incoming vehicles with the departure of outgoing vehicles so as to minimize transfer delays. Most bus timed transfer terminals follow fixed schedules, and do not utilize intelligent transportation systems for vehicle tracking and control. This paper reviews technologies that enable real-time control of timed transfer. We evaluate the benefits of tracking bus locations and executing dynamic schedule control through the simulation of a generic timed transfer terminal under a range of conditions. Based on empirical data collected by the Los Angeles County/Metropolitan Transit Agency, we found delay over segments of long-headway bus lines to be negatively correlated with lateness at the start of the segment, indicating that buses have a tendency to catch up when they fall behind schedule. The simulation analysis showed that the benefit of bus tracking is most significant when one of the buses experiences a major delay, especially when there is a small number of connecting buses. |
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