ANALISIS KINERJA SIMPANG BERSINYAL DENGAN PENDEKATAN PKJI 2023 (STUDI KASUS : SIMPANG TAMAN SARI)

The Taman Sari Intersection, a major intersection in Yogyakarta, is a crowded intersection based on preliminary surveys conducted by the PKL Yogyakarta team in 2024. Data from this preliminary survey indicate that at this intersection, the average degree of saturation is 1.00, the average delay is 261 seconds per vehicle, and the average queue length is 225 meters during the peak afternoon period from 16:00 to 18:00. According to PKJI 2023, the intersection is classified with a Level of Service (LoS) F for all three performance factors, indicating the need for traffic congestion mitigation. This study uses the PKJI 2023 approach to analyze intersection performance and to serve as a benchmark for determining optimal modifications for the intersection.
The study findings show that after evaluating using PKJI 2023 in the afternoon, the best performance improvement was achieved by adjusting the cycle time and reducing the phases from 4 to 2. This improvement is evidenced by a 55% reduction in the average degree of saturation, a 79% decrease in queue length, and a 90% reduction in delay.

Keywords: PKJI 2023, Degree of Saturation, Delay, Queue Length