Analisis Kinerja Simpang Tiga Tak Bersinyal (Studi Kasus Simpang Tiga Tak Bersinyal di Jalan Umakatahan – Kab. Malaka)

SERAN, Paskalius Valentinus Janssenn (2025) Analisis Kinerja Simpang Tiga Tak Bersinyal (Studi Kasus Simpang Tiga Tak Bersinyal di Jalan Umakatahan – Kab. Malaka). Undergraduate thesis, Universitas Katolik Widya Mandira.

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Abstract

This study analyzes the performance of an unsignalized three-leg intersection on Umakatahan Road in Malaka Regency, which functions as a critical traffic node with relatively high vehicle movements, particularly during morning, midday, and evening peak hours. The intersection performance evaluation is carried out in accordance with the Indonesian Highway Capacity Manual (PKJI) 2023 using key parameters including traffic volume, geometric characteristics, environmental conditions, side friction, capacity, degree of saturation, delay, queue probability, and level of service. Primary data were collected through field observations over four days during three daily time periods, while secondary data included population statistics and the location plan of the study area. The results indicate that the intersection has an average approach width of 3.2 m, a capacity of 2046.2 pcu/hour, and a peak-hour traffic volume of 591.6 pcu/hour, yielding a degree of saturation of 0.28 and a level of service classified as A (very good). The average control delay at the intersection is 7.68 seconds/pcu, with higher delays observed on the minor road compared to the major road, and the queue probability ranging between a lower bound of 4.37% and an upper bound of 12.66%. Although the intersection currently operates under good performance conditions, this study recommends several improvement measures, such as optimizing geometric design, reducing side friction, installing priority traffic signs, and considering the implementation of traffic control signals should traffic demand increase in the future.

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