Analysis capacity of U-turn movement at median opening using microsimulation PTV Vissim (case study: median opening Jl. Prof. Soedarto, SH. Tembalang, Semarang, Indonesia)

Abstract The median opening is a facility for turning vehicles, but when traffic flow too high can become congestion point. Congestion due to the volume of vehicles over capacity. Based on these problems, it necessary know U-turn movement capacity opening. In addition, analytical calculations have limitations in practical simulations similar conditions field. purpose this study was compare light vehicle (LV) at using two methods, that is, Harder model and PTV Vissim microsimulation which validated by field measurements. Two located Jl. Prof. Soedarto, S.H., Tembalang, Semarang, Polines Tembalang exit toll opening, were selected as case studies. results showed could outperform estimating LV inconsistent behavior drivers they make U-turn, together with geometry openings, contributed significant errors produced model.