Traffic Impact Analysis on the Road Network of Pantai Berkas Tourist Area, Bengkulu City, Due to Rising Traffic Volume

Abstract

Ideally, the main access road to a tourist area should perform acceptably (degree of saturation, DS < 0.85) even during peak seasons. In reality, Pariwisata Road, the main access to Pantai Berkas, Bengkulu City, frequently becomes congested during Eid al-Fitr because of high volumes and side friction. Without management, traffic growth will worsen performance and threaten tourism access, making this analysis urgent. This study aims to evaluate road performance using PKJI 2023, simulate management solutions, and quantify network vulnerability. Survey data were processed with PKJI 2023 and PTV VISSIM microsimulation to evaluate two scenarios: one-way traffic to handle seasonal surges, and road widening for long-term needs under 15-year projections. Vulnerability was measured using the INVE_F index. Validation yielded GEH < 5 and MAPE = 3.25%. Existing DS was 0.41 on Pariwisata Road and 0.30 on Ahmad Yani Road, but the 15-year projection raised Pariwisata DS to 0.82. The one-way scenario reduced DS to 0.29, while widening gave greater long-term benefit. Pariwisata Road remained vulnerable in both scenarios (INVE_F = 0.44 and 0.09); Pari and Ahmad Yani Roads emained vulnerable under the widening scenario (INVE_F = 0.01 and 0.07). One-way management suits short-term surges; widening suits long-term planning.