Bus Priority Procedure for Signalized Intersections Based on Bus Occupancy and Delay
DOI:
https://doi.org/10.52825/scp.v5i.1111Keywords:
Adaptive Bus Prioritisation, Traffic Control, Acceleration of Public TransportAbstract
This study proposes a bus prioritisation strategy at signalised intersections to enhance public transport reliability and attractiveness. Nowadays, bus prioritisation at intersections is conducted according to a first-come, first-served principle, lacking compatibility with future vehicle-to-infrastructure communication. A framework for prioritising buses based on their delay and occupancy was developed and tested in a SUMO microscopic traffic simulation subnetwork of the city of Ingolstadt. Buses are prioritised using a 25-level hierarchy. Four degrees of prioritisation interventions are implemented based on bus priority levels with signal cycles adjusted to advance preferred green phases. The timing of the prioritisation is based on an Estimated Time of Arrival (ETA) prediction that considers past speed and travel time data as well as bus stops that are on the way to the intersection. The prioritisation logic was tested in simulation scenarios with on- and off-peak conditions and with several buses requesting priority and varying degrees of priority. The results show that the developed prioritisation concept works, and prioritised buses benefit from a strong reduction in their travel times (up to 87 %) and number of stops. Buses with lower priority levels may experience deterioration in their travel time (up to 126 %) when arriving at the same time as a high-priority bus, but considering the fewer affected passengers and smaller delay, this seems acceptable.
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Copyright (c) 2024 Katia Juliane Schmidt, Natalie Steinmetz, Martin Margreiter
This work is licensed under a Creative Commons Attribution 3.0 Unported License.
Accepted 2024-04-03
Published 2024-07-17
Funding data
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Bundesministerium für Verkehr und Digitale Infrastruktur
Grant numbers 5KI05A011