The Short-Term Prediction of Link Travel Times in Signal Controlled Road Networks

Abstract

Effective monitoring and efficient control of traffic in congested urban road networks are the usual goals of Urban Traffic Control (UTC) systems. The short-term prediction of link travel times would extend the capabilities of UTC significantly, particularly where collective or individual Dynamic Route Guidance (DRG) is implemented, since predictions of link travel times arising from hypothetical traffic flows are required to evaluate alternative route recommendations, before a recommendation is made. The potential for predicting link travel times from traffic flow on the approaches to the junction is examined using ARIMA techniques.