VALIDASI PANJANG ANTRIAN SIMPANG APILL BERDASARKAN PENGUKURAN EMPIRIS DAN PKJI 2023
VALIDATION OF SIGNALIZED INTERSECTION QUEUE LENGTH USING FIELD MEASUREMENTS AND THE 2023 INDONESIAN HIGHWAY CAPACITY GUIDELINES
Keywords:
Derajat Kejenuhan, panjang antrean, pengukura empiris, PKJI 2023, Simpang APILLAbstract
Panjang antrean merupakan indikator penting untuk mengevaluasi kinerja simpang dengan Alat Pemberi Isyarat Lalu Lintas (APILL). Perbedaan antara panjang antrean hasil pengamatan lapangan dan hasil perhitungan menggunakan pedoman kapasitas dapat memengaruhi ketepatan evaluasi kinerja simpang. Penelitian ini bertujuan memvalidasi panjang antrean hasil pengukuran empiris terhadap hasil analisis berdasarkan Pedoman Kapasitas Jalan Indonesia (PKJI) 2023. Penelitian dilakukan pada simpang Majapahit dan simpang Soekarno Hatta di Kota Semarang. Data dikumpulkan melalui survei volume lalu lintas, geometri pendekat, waktu sinyal, dan pengukuran panjang antrean pada hari Senin, Rabu, dan Sabtu pukul 16.30–17.30. Analisis dilakukan dengan menghitung arus lalu lintas, kapasitas, derajat kejenuhan, serta panjang antrean berdasarkan PKJI 2023. Validasi menggunakan Mean Absolute Percentage Error (MAPE), dengan panjang antrean empiris sebagai nilai aktual. Hasil menunjukkan panjang antrean hasil perhitungan PKJI 2023 berada pada rentang 81–184 m, sedangkan hasil pengamatan empiris berada pada rentang 64–155 m. Rata-rata MAPE dari 24 pasangan pengamatan mencapai 30,39%. Hasil ini menunjukkan adanya perbedaan yang berarti antara estimasi pedoman dan kondisi lapangan. Evaluasi lebih lanjut terhadap parameter kapasitas, khususnya arus jenuh dasar dan faktor penyesuaiannya, diperlukan sebelum hasil analisis digunakan untuk pengambilan keputusan rekayasa lalu lintas.
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