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All Journal Rekayasa Sipil Jurnal Proyek Teknik Sipil
Karimi, Muh Bahrul Ulum Al
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Civil Engineering, Building, Construction & Architecture

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Perencanaan Perkerasan Jalan Berdasarkan Lalu Lintas Angkutan Batubara di Kalimantan Timur Mahfuda, Anno; Karimi, Muh Bahrul Ulum Al; Kumala, Nevy Risna Dyah
Jurnal Proyek Teknik Sipil Vol 8, No 1 (2025): Maret
Publisher : Civil Infrastructure Engineering and Architectural Design

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/potensi.2025.26139

Abstract

Lalu lintas yang terdapat di dalam industri pertambangan memiliki berbagai macam permasalahan, salah satunya adalah beban kendaraan yang berat dengan muatan yang berat. Studi dilaksanakan di Kutai Timur, Kalimantan Timur dengan lalu lintas angkutan batubara. Studi ini hendak memberikan sisi pandang mengenai solusi dari permasalahan penentuan perkerasan jalan. Perencanaan perkerasan lentur dalam penelitian ini akan menggunakan Bina Marga 2017 dengan mempertimbangkan faktor ESA, lokasi, dan pemeliharaan perkerasan yang akan dilaksanakan. Didapatkan jenis perkerasan lentur berupa Burda atau Burtu dengan lapis pondasi LPA Kelas A. Perkerasan ini dianggap sudah cukup untuk menunjang lalu lintas yang ada.
PTV Vissim Calibration and Validation of Median Opening U-Turn Karimi, Muh Bahrul Ulum Al; Haryadi, Bambang; Setiadji, Bagus Hario; Mahfuda, Anno
Rekayasa Sipil Vol. 19 No. 2 (2025): Rekayasa Sipil Vol. 19 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2025.019.02.15

Abstract

Traffic conditions at a median opening are more complex than signalized or unsignalized intersections. Driving behaviors and the driver's ability to maneuver a U-turn can affect median opening performance. Using software such as PTV Vissim, simulations can be carried out to help analyze traffic conditions and make necessary decisions. This study aims to simulate the median opening u-turn using PTV Vissim to resemble actual traffic conditions and validate it statistically. The calibration involves adjusting traffic volume, headway distribution, speed distribution, driving behaviors, conflict area, and critical gap. One of the important parameters in an unsignalized intersection, especially for U-turn movements at median openings, is the necessary gap. Most simulations still focus on driving behavior parameters, while the critical gap should be used as a calibration parameter to determine safe distances. Additionally, headway distribution predicts the arrival of vehicles that will pass through the median opening. This study adds calibration to the headway distribution parameter and critical gap parameter. The validation MAPE and GEH results for the calibrated simulation are good and acceptable. Meanwhile, the uncalibrated (default) simulation shows poor and unacceptable values. This evidence indicates that calibration is essential in the PTV Vissim simulation. Factors that affect the simulation result are inconsistent drivers, aggressive driver behavior, and inability to comply with priority rules. Driving patterns in mixed and heterogeneous traffic conditions create opportunities and spaces for making U-turns. Simulating this factor is challenging, so a more careful calibration is needed.
Co-Authors Bagus Hario Setiadji Bambang Haryadi Kumala, Nevy Risna Dyah Mahfuda, Anno