Modeling of Gap Acceptance Characteristics of Right-Turning Vehicles at Signalized Intersections

The purpose of this study is to develop a gap acceptance model of right-turning vehicles at signalized intersections, aiming at developing a simulation model to be able to reproduce the right-turning capacity in microscopic fashion. The modeling is done based on the assumption that the right-turn decision be done as the alternative judgment of right-turners, therefore the logit model is applied. The model developed can reproduce the right-turn behavior as the stochastic ones and can handle various factors on capacity. The result of the sensitivity test shows that the behavior mostly depend upon the gap sizes, but also depend upon the other factors especially when the gap sizes are around the critical ones.