New uniform delay model for signalized intersections

This study developed arrival-type-based delay models to determine the uniform component of stopped delay at signalized intersections. The Highway Capacity Manual delay model applies progression adjustment factors in the range of 0 to 256% to account for signal progression effects. The proposed models eliminate the needs for using such a coarse progression adjustment factors. The models consider the arrival time of the front of platoon as well as platoon volume and flow rate, and is sensitive to the traffic volume inside the platoon. For arrival type 3 only, the proposed model is identical to the HCM delay model. However, for other arrival types the proposed models are more accurate than the HCM model in representing the signal coordination effects.