Mhd Naufal Ihsan Desky (1), Tri Sudibyo (2), Apriadi Apriadi (3), Riani Muharomah (4)
The escalating traffic volumes driven by population growth and increasing vehicle ownership within the IPB University educational area in Dramaga, Bogor leads to transportation challenges. This study aims to evaluate the operational performance of the Babakan Raya Intersection and Duta Berlian Intersection in IPB Dramaga campus area, by integrating the analysis of the two intersections using Indonesian Road Capacity Manual (PKJI 2023). The analysis of existing conditions in 2026 indicates that the Babakan Raya Intersection operates at Level of Service (LOS) C, with a degree of saturation (DS) of 0.96, while the Duta Berlian Intersection operates at LOS B, with a DS of 0.86. Despite improved performance compared with previous-year studies, attributed to route redistribution and a reduction in observed traffic volumes, both intersections remain vulnerable to high delays and significant side friction. To optimize traffic flow, various traffic engineering scenarios were evaluated. The results indicate that a combined strategy involving the installation of traffic signal control (APILL) and geometric widening constitutes the most effective solution. Implementation of a 32-second signal phase at the Babakan Raya Intersection reduced the DS to 0.55, with a delay of 6.39 seconds/passenger car unit (PCU), corresponding to LOS B. Similarly, implementation of a 42-second signal phase accompanied by roadway widening at the Duta Berlian Intersection reduced the DS to 0.71, with a delay of 13.14 seconds/PCU (LOS B). This comprehensive traffic engineering strategy demonstrates its effectiveness in systematically increasing intersection capacity, minimizing traffic conflicts, and meeting the minimum service standards stipulated by national transportation regulations for strategically important educational areas.
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