Study of Signalized Intersection on Prof. Moh Yamin Road – Dr. Abdurrahman Saleh Road with PKJI Method and Vissim Software

Traffic congestion frequently occurs at intersections due to conflicting vehicle movements from each approach. One such location in the city of Palu is the intersection of Jalan Prof. Moh Yamin and Jalan DR. Abdurrahman Saleh, which experiences high traffic volumes, particularly during peak hours. Its proximity to public facilities and direct access to the airport contribute significantly to traffic intensity. This study evaluates the operational performance of the intersection using the PKJI 2023 method and microscopic simulation with VISSIM. The parameters analysed include queue length, delay, and level of service. Results from the PKJI indicate that all approaches operate at level of service F. In contrast, the VISSIM simulation yields results that better reflect actual conditions. Three improvement scenarios were assessed: signal timing optimisation, road widening and modal shift to private vehicles. The scenario involving a modal shift from private vehicles to public transport produced the most substantial improvement, reducing delays and queues while elevating the level of service to between B and D across the approaches.