Civil and Environmental Engineering
Field Evaluation of Alternative Real-Time Methods for Estimating Approach Delay at Signalized Intersections
Date of this Version
Proceedings of the 10th International Conference on Application of Advanced Technologies in Transportation, meeting held in Athens, Greece, May 27-31, 2008.
Vehicle delay at a signalized intersection is among the widely used performance measures of efficiency at a signalized intersection. The Highway Capacity Manual (HCM) uses this performance measure to report the level of service at a signalized intersection. This performance measure is also used to estimate travel time along the arterials. With the advent of technological advances in the field of vehicle detection, real-time measurement of delay at a signalized intersection has become economically and computationally feasible. This paper compares three emerging techniques for estimating approach delay: an Input Output technique (IO), a Hybrid technique, and the HCM delay equation. The techniques were tested under varying traffic conditions at the instrumented intersection in Noblesville, Indiana.
Copyright 2008, AATT. Used by permission.