Identifikasi Pendekat Dominan dan Analisis Sensitivitas Kapasitas Simpang APILL Patung Kirab Kota Kupang Berdasarkan PKJI 2023

Benny Tua Siahaan; Adveni Hesty Altisari Lada; Ari Esclesias Sinaga; Alvin Alfredo Bara

doi:10.53863/kst.v8i02.2426

Authors

Benny Tua Siahaan Akademi Teknik Kupang, Indonesia
Adveni Hesty Altisari Lada Akademi Teknik Kupang, Indonesia
Ari Esclesias Sinaga Akademi Teknik Kupang, Indonesia
Alvin Alfredo Bara Universitas Nusa Cendana, Indonesia

DOI:

https://doi.org/10.53863/kst.v8i02.2426

Keywords:

degree of saturation; delay; signalized intersection; Kupang City; PKJI 2023

Abstract

Urban traffic growth increases operational pressure on signalized intersections, particularly in areas serving commercial, office, educational, and residential activities. This study evaluates capacity, operational performance, and critical approaches at the Patung Kirab signalized intersection in Kupang City based on the Indonesian Road Capacity Guidelines 2023 (PKJI 2023). The novelty of this study lies in integrating aggregate intersection performance evaluation with approach-based flow distribution analysis and capacity-improvement sensitivity scenarios to determine operational treatment priorities for a medium-sized city in Eastern Indonesia. A descriptive quantitative approach was applied through classified traffic-volume surveys, geometric observations, signal-timing observations, and side-friction observations over three days: Sunday 9 November 2025, Monday 10 November 2025, and Tuesday 11 November 2025. Surveys were conducted during three periods, namely 06:00–08:00, 12:00–14:00, and 18:00–20:00 WIT, and the analysis hour was selected based on the highest traffic volume for each observation day. The results show that the intersection capacities on Sunday, Monday, and Tuesday were 3,734.08, 3,645.51, and 3,589.57 skr/hour, respectively. The corresponding degrees of saturation were 0.739, 1.139, and 0.936, while the average delays were 4.125, 29.220, and 16.604 seconds/skr. Monday was oversaturated, whereas Tuesday operated in a critical range. The southern approach was dominant on Sunday and Monday, contributing 40.71% and 40.66% of total traffic flow, whereas the western approach was dominant on Tuesday, contributing 41.75%. The sensitivity analysis indicates that a 10% capacity increase would only reduce Monday's degree of saturation to 1.035, while Tuesday would decrease close to the planning threshold at 0.851. These findings indicate that initial treatments should prioritize green-time optimization for the southern and western approaches, side-friction control, and queue observation during peak hours

References

Afrianti, D. A., Handayani, S., & Sarwosri, H. S. (2023). Manajemen dan Rekayasa Lalu Lintas CBD di Kawasan Pemerintahan Kabupaten Kediri. Warta Penelitian Perhubungan, 35(1), 1–10. https://doi.org/10.25104/warlit.v35i1.1917

Badan Pusat Statistik Kota Kupang. (2025). Kota Kupang dalam angka 2025. BPS Kota Kupang.

Biswas, S., Chandra, S., & Ghosh, I. (2021). Side friction parameters and their influences on capacity of Indian undivided urban streets. International Journal of Transportation Science and Technology, 10(1), 1–19. https://doi.org/10.1016/j.ijtst.2020.03.007

Cahya P. P., A., Angelica, E. G., Setijowarno, D., & Hartanto, D. (2024). Optimalisasi Kinerja Simpang Bersinyal Menggunakan Metode Pedoman Kapasitas Jalan Indonesia (PKJI) 2023 dan Program PTV Vissim (Studi Kasus: Simpang Peterongan dan Simpang Ahmad Yani). G-SMART, 8(1), 17–27. https://doi.org/10.24167/gsmart.v8i1.11477

Devi, K. W., Mardikawati, B., & Atmajaya, A. B. (2024). Pengaruh geometri dan konfigurasi sinyal terhadap kinerja simpang dengan pendekatan PKJI 2023 dan PTV VISSIM: Studi kasus Simpang Tugu Wisnu di Kota Surakarta. Jurnal Ilmiah Kurva Teknik, 13(1), 1–10. https://doi.org/10.36733/jikt.v13i1.9027

Direktorat Jenderal Bina Marga. (2014). Pedoman Kapasitas Jalan Indonesia (PKJI). Kementerian Pekerjaan Umum.

Direktorat Jenderal Bina Marga. (2023). Pedoman Kapasitas Jalan Indonesia (PKJI) 2023. Kementerian Pekerjaan Umum dan Perumahan Rakyat.

Maulidya, I. (2022). Optimisasi kinerja Area Traffic Control System (ATCS) di Simpang Dome Kota Balikpapan. Warta Penelitian Perhubungan, 34(2), 119–128. https://doi.org/10.25104/warlit.v34i2.1804

Maulidya, I., Kurniati, N. L. W. R., & Andari, T. (2021). Penataan Parkir di Badan Jalan Kota Payakumbuh. Jurnal Penelitian Transportasi Darat, 23(1), 37–54. https://doi.org/10.25104/jptd.v23i1.1686

Mondal, S., & Gupta, A. (2020). A review of methodological approaches for saturation flow estimation at signalized intersections. Canadian Journal of Civil Engineering, 47(3), 237–247. https://doi.org/10.1139/cjce-2018-0696

Mondal, S., Gupta, A., & Zhao, J. (2022). Two-step optimization model for evaluating the saturation flow rate under the impact of small-sized vehicles. Journal of Transportation Engineering, Part A: Systems, 148, 4022019. https://doi.org/10.1061/JTEPBS.0000664

Naway, F. R., & Suryani, F. (2023). Perencanaan Area Traffic Control System (ATCS) untuk Optimasi Kinerja Persimpangan pada Jalan H.M. Joyo Martono, Kota Bekasi. IKRAITH-Teknologi, 7(1), 53–63. https://doi.org/10.37817/ikraith-teknologi.v7i1.2320

Nawaz, I., Almoshaogeh, M., Ahmed, T., Moeinaddini, M., Jamal, A., & Alharbi, F. (2024). An empirical framework to quantify the individual traffic congestion cost for private motorized vehicle users. SAGE Open, 14(2). https://doi.org/10.1177/21582440241249801

Othayoth, D., & Rao, K. V. K. (2020). Assessing the relationship between perceived waiting time and level of service at signalized intersection under heterogeneous traffic conditions. Asian Transport Studies, 6, 100024. https://doi.org/10.1016/j.eastsj.2020.100024

Prasetyo, P. Y., Priyanto, S., & Muthohar, I. (2021). Pengaturan Pola Arus Lalu Lintas di Kawasan PLTU Karangkandri Cilacap: Studi Kasus Ruas Jalan Lingkar Timur Cilacap. Jurnal Penelitian Transportasi Darat, 23(1), 1–17. https://doi.org/10.25104/jptd.v23i1.1556

Sugiarto, S., Apriandy, F., Darma, Y., Saleh, S. M., Rusdi, M., & Miwa, T. (2021). Determining passenger car equivalent (PCEs) for pretimed signalized intersections with severe motorcycle composition using Bayesian linear regression. PLOS ONE, 16(9), e0256620. https://doi.org/10.1371/journal.pone.0256620

Sugiarto, S., Saleh, S. M., Darma, Y., Rusdi, M., A’yuni, Q., Fazila, T. S., & Rahma, R. (2024). Base saturation flow rate (BSFR) and its effect on performance of pretimed signalized intersection with non-lane based urban heterogeneous traffic. PLOS ONE, 19(7), e0306112. https://doi.org/10.1371/journal.pone.0306112

Widodo, W., & Farhanto, A. S. (2025). Analisis kinerja simpang bersinyal menggunakan perangkat lunak PTV VISSIM 2024: Studi kasus simpang empat Daerah Istimewa Yogyakarta. Bulletin of Civil Engineering, 5(1), 1–8. https://doi.org/10.18196/bce.v5i1.25837