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All Journal Jurnal Transportasi Prosiding Forum Studi Transportasi Antar Perguruan Tinggi International Journal on Advanced Technology, Engineering, and Information System (IJATEIS) Smart City INJURITY: Journal of Interdisciplinary Studies Eduvest - Journal of Universal Studies
Sutanto Soehodho
Department of Civil Engineering Faculty of Engineering University of Indonesia
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Health Professions Industrial & Manufacturing Engineering Neuroscience Public Health Social Sciences Transportation Other

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The Influence of Road Geometry on the Number of Accidents at Curves: A Study on the Variability of Hilliness and Bendiness Putri, Atissa Dwi; Siregar, Martha Leni; Soehodho, Sutanto
INTERNATIONAL JOURNAL ON ADVANCED TECHNOLOGY, ENGINEERING, AND INFORMATION SYSTEM Vol. 4 No. 2 (2025): MAY
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/ijateis.v4i2.1816

Abstract

This study examined the influence of roadway geometry on traffic safety, focusing on the effects of hilliness and bendiness along a 9.28 km road segment in West Sumatra, Indonesia. Geometric data, including elevation and curvature, were collected using the GeoTracker application and processed with a Python-based sliding window segmentation of 1 km length and 50% overlap, resulting in 19 analysis segments. Traffic accident data were obtained from official police reports and included the number of crashes, minor injuries, serious injuries, and fatalities for each segment. Multivariate Analysis of Variance (MANOVA) was performed to evaluate the simultaneous effects of hilliness and bendiness on the crash variables. The results showed that hilliness significantly influenced the total number of accidents, while bendiness significantly affected the occurrence of serious injuries. Hilliness explained approximately 80% of the variance in accident frequency, and bendiness contributed substantially to variations in serious injuries. Although neither hilliness nor bendiness showed significant effects on minor injuries and fatalities, both factors exhibited positive trends in relation to increasing crash severity. The findings demonstrated that vertical elevation changes and horizontal curvature contributed significantly to traffic accident risks. The study suggested that incorporating these geometric parameters into road design, safety assessments, and targeted interventions could help reduce accident occurrences, particularly in mountainous and curvilinear roadway segments.
Effectiveness of Pelican Crossing on Traffic Flow (Case Study: M.H. Thamrin Road and Sudirman Road, Central Jakarta City) Simanjuntak, Windy Aprilia; Soehodho, Sutanto; Sumabrata, Jachrizal
Eduvest - Journal of Universal Studies Vol. 3 No. 12 (2023): Journal Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v3i12.990

Abstract

Pelican Crossing is a crossing with a signaling device that is operated by pedestrians and will stop the flow of vehicle traffic. Pedestrians must press a button to request green time from vehicle drivers so that vehicle drivers stop and pedestrians can cross the road. As a metropolitan city, Central Jakarta is full of activity. The increase in the number of vehicles is not the main factor causing congestion. There are other factors such as the movement of pedestrians crossing the road using Pelican Crossing, causing queues and delays. This study aims to analyze the effect of pedestrians crossing at pelican crossing on the queue length of vehicles, to analyze the characteristics of traffic flow and pedestrians due to pelican crossing and to apply a model that connects the characteristics of traffic flow and pedestrians at pelican crossing. The research was conducted by surveying the existing traffic conditions. The results of the research show that after calculating the PV2 value, we can see the discrepancy in the existing pelican crossing facilities on Jalan MH Thamrin and Jalan Sudirman based on the calculation of pedestrian crossings and traffic volume, which in calculating the PV2 value recommends a non-level crossing type.
Co-Authors Angella, Dwi Desy Evriyani, Desy Dewi, Ari Tri Kusuma Imayanti, Indah Jachrizal Sumabrata Martha Leni Siregar Muallif, Muhammad Tsaqib Nahry Nahry Putri, Atissa Dwi Ruci, Khobat Dewa Sari, Nanda Iryani Intan Sidabutar, Jonathan Simanjuntak, Windy Aprilia