Analisis Kinerja Simpang Tak Bersinyal (Studi Kasus: Simpang Semper - Jakarta Utara)

Simanungkalit, Gabriel Batistuta (2025) Analisis Kinerja Simpang Tak Bersinyal (Studi Kasus: Simpang Semper - Jakarta Utara). S1 thesis, Universitas Kristen Indonesia.

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Abstract

Penelitian ini mengkaji kinerja Simpang Tak Bersinyal di kawasan Semper, Jakarta Utara, menggunakan parameter evaluasi dari Pedoman Kapasitas Jalan Indonesia (PKJI) 2023 sebagai acuan utama. Data dikumpulkan melalui observasi langsung selama lima hari, difokuskan pada jam sibuk pagi dan sore dengan interval pengamatan setiap 15 menit. Hasil penelitian didapatkan bahwa beban lalu lintas tertinggi tercatat pada hari Rabu, mencapai 5.293,9 smp/jam. Sementara itu, kapasitas simpang hanya sebesar 2.859,4 smp/jam, yang berarti derajat kejenuhan mencapai angka 1,85—jauh melebihi ambang batas ideal. Kondisi ini mencerminkan tingkat kejenuhan lalu lintas yang sangat tinggi, tundaan negatif, serta risiko antrean ekstrem yang melampaui 100%. Melihat kondisi kritis ini, sudah saatnya dilakukan tindakan nyata. Rekayasa lalu lintas perlu segera diterapkan untuk memulihkan dan meningkatkan efisiensi simpang tersebut. Dengan langkah yang tepat, kawasan ini dapat terbebas dari kemacetan parah dan bergerak menuju sistem transportasi yang lebih tertib dan lancar. 2/2 Kata Kunci: Simpang tak bersinyal, derajat kejenuhan, PKJI 2023, kinerja simpang, Jakarta Utara. / This study investigates the operational performance of an unsignalized intersection located in the Semper area, North Jakarta, using the analytical framework provided by the Indonesian Highway Capacity Guidelines (PKJI) 2023. The research methodology involved a five-day field survey conducted during peak morning and evening hours, with traffic volume recorded at 15-minute intervals. The highest observed traffic volume occurred on Wednesday, totaling 5,293.9 passenger car units per hour (pcu/hour). After applying all correction factors outlined in PKJI 2023, the effective capacity of the intersection was calculated to be 2,859.4 pcu/hour, resulting in a degree of saturation of 1.85. This value significantly exceeds the acceptable threshold (DS ≤ 0.85), indicating severe congestion and overcapacity conditions. Additional analysis revealed negative traffic delay values and queuing probabilities exceeding 100%, confirming a breakdown in operational service. These findings suggest that the intersection is operating under Level of Service (LOS) F and is in critical need of traffic engineering interventions such as signalization, geometric improvements, and traffic management strategies to restore acceptable performance levels. Keywords: Unsignalized intersection, degree of saturation, PKJI 2023, traffic performance, urban congestion, North Jakarta.

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