Travel Time and Delay Study of Arterial Roads using GPS Instrumented Vehicle

抄録

Travel time is one of the most important measures for evaluating the performance of road networks. Travel time information has become increasingly important for transportation planning, route guidance as well as congestion management purpose. This paper reports a study conducted to investigate the level of congestion on arterial road networks in Auckland. Average car method was employed to collect travel time data on three major arterial routes during morning peak hours using an instrumented vehicle equipped with GPS receiver. The Level of Service (LOS) concept proposed in Highway Capacity Manual 2000 was used to determine the level of congestion on the arterial routes. The sample size required for reliable estimation of travel time was determined based on confidence interval method. The analysis results were then compared with those coming from a similar study conducted in 2004 by Transit New Zealand.