A new approach for co-operative bus priority at traffic signals

Hounsell, N.B. and Shrestha, B.P. (2012) A new approach for co-operative bus priority at traffic signals [in special issue: Emergent Cooperative Technologies in Intelligent Transportation Systems] IEEE Transactions on Intelligent Transportation Systems, 13, (1), pp. 6-14. (doi:10.1109/TITS.2011.2172869).


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Bus priority at traffic signals is a growing area of co-operative transport system applications. Interest in bus priority continues to grow as the Cities pay more attention to the needs of buses to provide fast, frequent and reliable services thus contributing to a sustainable transport system. Bus priority at traffic signals is particularly favoured at places where road space is limited and traffic signal density is high. With increasing use of Automatic Vehicle Location (AVL) systems, it is now possible to provide ‘differential’ priority, where different levels of priority can be awarded to buses at traffic signals according to chosen criteria (e.g. to improve regularity). At present, common strategies are based on the comparison of the time headway of a bus with the scheduled headway. However, this paper shows that greater regularity benefits could be achieved through a strategy where priority for a bus is based not only on its own headway, but also the headway of the bus behind. This paper demonstrates the benefits of this on a theoretical basis and quantifies the benefits from simulation modeling of a high frequency bus route. Such a strategy provides an opportunity to exploit the more detailed location information available from the growing number of AVL-based systems for buses being implemented around the world.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1109/TITS.2011.2172869
ISSNs: 1524-9050 (print)

Organisations: Civil Maritime & Env. Eng & Sci Unit
ePrint ID: 184219
Date :
Date Event
March 2012Published
Date Deposited: 05 May 2011 12:44
Last Modified: 18 Apr 2017 02:20
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/184219

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