Simultaneous control of traffic lights and bus departure for priority operation

Document Type

Journal Article

Publication Date


Subject Area

infrastructure - bus/tram priority, infrastructure - traffic signals, mode - bus, technology - intelligent transport systems


Traffic light control, Bus priority


This article presents a bus priority method for traffic light control based on two modes of operation: immediate and controlled departure. The immediate departure mode is a standard procedure in which the intersection controller grants priority upon request of the bus. Controlled departure acts to avoid a second stop of the bus at the end of the queue formed during red by holding the bus at the bus stop, while still granting priority to the bus lane. Selection of one of the two modes is based on intersection cost that includes bus delay and the impact on the overall traffic near the intersection. The method is applied in a constant cycle scenario where green recall and green extension can only be granted within certain limits. Numerical examples illustrate the application of the approach.


Permission to publish abstract given by Elsevier, copyright remains with them.


Transportation Research Part C Home Page: http://www.sciencedirect.com/science/journal/0968090X