Effect of Driver's Behavior in Capacity and Delay of Non signalized Intersections and Calibrating Delay Equations in HCM2000

Capacity and delay are two most important measures in the evaluation of non signalized intersection’s performance that have been widely used in traffic improvement projects and transportation network assignment models. Because of the close relation between driver behaviors and traffic regulations with the Investigation and computation of delay and capacity in non signalized intersections the analysis of these intersections are so sophisticated. The purpose of this research is to adapt the state of the art algorithm used in HCM 2000 with Iran’s situation with respect to the gap acceptance behavior of the drivers in Iran. The data achieved from several field observations on the intersections of Tehran have been used to calibrate the gap acceptance used for the capacity and delay estimation model. Using developed countries design and operation manuals in developing countries without modification would give misleading results.