Performance of PUE Bongo – I Gusti Ngurah Rai Intersection Based on Vissim Simulation

The Pue Bongo – I Gusti Ngurah Rai – Padanjakaya intersection is an unsignalized intersection in Palu City, precisely between the borders of Palupi Village and Pengawu Village, Tatanga District, Palu City, which was previously a three-way intersection due to the construction of the new Palupi Bridge which was built together with the construction of the Palu City inner ring road which was included in the post-earthquake reconstruction project so that the intersection became a four-way intersection. and became very dense with quite high traffic flow, causing increased congestion and accidents, even to the point of death. This study aims to analyze the performance of the Pue Bongo – I Gusti Ngurah Rai intersection using PTV Vissim software because this software is a simulation model that can analyze traffic performance with output results close to field conditions. PTV Vissim is a macrosimulation program used for traffic management. This program uses computer software to mathematically model the transportation system. To prove that there is no significant difference between the model output results and the results of observations in the field, calibration and validation are then carried out. The output results of the Pue Bongo – I Gusti Ngurah Rai intersection model are close to the observation results with the GEH test results <5 on traffic flow, the calculated t value <t table on queue length, and on travel time the relative difference test results show a percentage difference value of 6%. From these results it can be concluded that the model is calibrated and validated. The results of the performance analysis are the average queue length for each arm of 32 meters, travel time of 146 seconds, and intersection delay of 18 seconds.