QUEUE DISCHARGE FLOW AND SPEED MODELS FOR SIGNALISED INTERSECTIONS

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. Presented are relationships among saturation headway and speed, jam spacing, queue departure response time, queue departure wave speed and acceleration characteristics. Also discussed are implications of the queue discharge flow and speed models for adaptive signal control practice, namely the SCATS control parameters, optimum detector loop length and the gap setting parameter.