Predicting travel time variability for cost-benefit analysis

Abstract

This paper describes an analysis of the relation between travel time variability and mean delay, based on GPS data of travel times on a large set of Danish roads. Our overall aim is to develop a model to predict the extent of travel time variability for road traffic, based on information about average travel time and delay, inspired by the approach applied in the Netherlands. Our results suggest that this is indeed possible, but that further analysis is needed before the method can be applied in practice.