Queue Discharge Flow and Speed Models for Signalised Intersections

Aerial photograph of road


This paper describes the exponential queue discharge flow rate and speed models, and presents a summary of model calibration results based on data from 18 intersections in Melbourne and Sydney, Australia. Relationships among saturation headway and speed, jam spacing, queue departure response time, queue departure wave speed and acceleration characteristics are presented. Implications of the queue discharge flow and speed models for adaptive signal control practice, namely the SCATS control parameters, optimum detector loop (detection zone) length and the gap setting parameter are discussed.


AKÇELIK, R. and BESLEY, M. (2002). Queue Discharge Flow and Speed Models for Signalised Intersections. In: Transportation and Traffic Theory in the 21st Century, Proceedings of the 15th International Symposium on Transportation and Traffic Theory, Adelaide, 2002 (Edited by M.A.P. Taylor). Pergamon, Elsevier Science Ltd, Oxford, UK, pp 99-118.