The Effect of Traffic Movement Design Study at The Manahan Flyover to the Road Network Performance Using Traffic Micro-Simulation VISSIM

Level crossings between railway and highway causes transportation problems in the form of traffic jams and accidents. The Manahan Flyover development in the Surakarta city is an effort to minimize transportation problems in the Manahan and Kota Barat areas. Field condition shows that traffic congestion in the Manahan Flyover can be minimized, but traffic accident rate is increasing. Within nine months an accident occurred with two dead victims. The potential of traffic accident is inseparable with the design of the Manahan Flyover with the design of three-way intersection. The aim of study is to redesign traffic movement in the Manahan Flyover and surrounding Manahan area. Traffic micro-simulation VISSIM model is used to evaluate the performance of road networks at peak traffic conditions with different simulation models. The scenario simulation model is developed based on the calibrated base simulation model. In order to avoid potential accidents, therefore, the direction of traffic movement at the Manahan Flyover is made with a one-way system. The modelling scenario results indicate that the diversion of traffic movement at the Manahan Flyover must be followed by various traffic management and engineering efforts in the Manahan area including road widening, parking management, application of a one-way system.