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All Journal Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Jurnal Kendali Teknik dan Sains
Ratih Sekartadji
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Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Electrical & Electronics Engineering Engineering

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Analisis Kinerja Ruas Jalan Kenjeran, Simpang Apill (Jl. Kenjeran - Jl. Tambak Rejo), dan Simpang (Jl. Kenjeran - Jl. Sidotopo Wetan) Akibat Tundaan Perlintasan Sebidang Jpl 3 Sidotopo Surabaya Bilal Zamzami; Ratih Sekartadji; Kurnia Hadi Putra; Theresia Maria
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Vol. 4 No. 3 (2026): Juli: Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipi
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/konstruksi.v4i3.1461

Abstract

Traffic congestion caused by railway level crossings is a serious urban problem, especially on Kenjeran Road affected by the closure of the JPL 3 Sidotopo gate in Surabaya. This closure creates total blocked time, triggering long queues that spill back to adjacent intersections. This study aims to evaluate the existing traffic performance of Kenjeran Road, the signalized intersection (Kenjeran–Tambak Rejo), and the unsignalized intersection (Kenjeran–Sidotopo Wetan) using the 2023 Indonesian Road Capacity Guidelines (PKJI), and to propose an alternative solution in the form of a flyover. Primary data were collected through field surveys during three peak periods on weekdays and weekends, covering traffic volume, road geometry, and gate closure duration. Performance analysis included calculation of capacity, degree of saturation, queue length, and delay, supported by visual simulation using PTV Vissim 22. Results show that existing conditions are highly critical, with a road degree of saturation reaching 0.98, a level crossing delay of 56.14 sec/pcu, and a signalized intersection degree of saturation of 1.34, indicating oversaturated conditions. After implementing a flyover that separates straight-through light and heavy vehicle flows, significant improvements were achieved: the underpass road degree of saturation dropped to 0.63, the signalized intersection to 0.50, the unsignalized intersection to 0.41, and crossing delay decreased to 27.24 sec/pcu. These findings confirm that vertical separation of traffic flows effectively restores network service levels.
Optimalisasi Keselamatan JPL 405a Surabaya: Analisis Black Spot EAN–HAZOP dan Simulasi EWS IoT Berbasis Vissim Nurhaliza Avrilia Wibisono; Ratih Sekartadji
Jurnal Kendali Teknik dan Sains Vol. 4 No. 3 (2026): Juli Jurnal Kendali Teknik dan Sains
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v4i3.6436

Abstract

The JPL 405A level crossing in Asemrowo, Surabaya is a Category B crossing traversed by 40 train trips per day and recorded 906 traffic violations during 2021–2025, despite only two fatal crashes. This gap between high violation frequency and low accident count indicates a latent risk that may escalate into fatal incidents. This study aims to evaluate the safety and traffic performance of JPL 405A and assess the effectiveness of an Internet of Things (IoT)-based Early Warning System (EWS) as a mitigation measure. Methods include a 12-hour traffic volume survey, effective capacity calculation using PKJI 2023 with gate-closure correction, black spot identification through the Equivalent Accident Number (EAN) and Upper Confidence Limit (UCL), EAN–HAZOP risk assessment enriched with a Violation Behavior Index (IPP), and two-scenario microsimulation using VISSIM software. Results show Degree of Saturation values of 0.882 and 0.884 (LOS E) for the North and West approaches; EAN = 12 exceeds UCL = 9.705, confirming black spot status; Hazard Index reaches 4,325,360, approximately 5.8 times the regulatory threshold of 750,000; and the peak HAZOP Risk Score is 25 (Extreme Risk) for gate-running behavior. IoT EWS simulation reduced the Risk Score from 25 to 5 (Medium Risk), increased the gate-open ratio from 0.846 to 0.857, and reduced maximum queue length by 29 m (North) and 50 m (West) during peak hour. IoT EWS implementation is recommended as a medium-term priority, with flyover or underpass construction as a permanent long-term solution.
Co-Authors Bilal Zamzami Kurnia Hadi Putra Nurhaliza Avrilia Wibisono Theresia Maria