Field Evaluation of Alternative Real-Time Methods for Estimating Approach Delay at Signalized Intersections

Authors

Anuj Sharma, University of Nebraska - LincolnFollow
Darcy M. Bullock, Purdue UniversityFollow

Date of this Version

2008

Citation

Proceedings of the 10th International Conference on Application of Advanced Technologies in Transportation, meeting held in Athens, Greece, May 27-31, 2008.

Comments

Copyright 2008, AATT. Used by permission.

Abstract

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.