Highway and railwaycrossing management model to improve Sidoarjo-Tarik crossing safety: Comparisonbetween Indonesia and Malaysia

Dadang Supriyatno , Syaiful, Mudjanarko Sri Wiwoho, Wardhani Asri Kusuma

The railway level crossings between Sidoarjo-Tarik in Sidoarjo Regency are mostly railway crossings without barriers that are prone to traffic accidents due to conflicts at railway crossings between road users and passing trains, which have the potential to cause accidents. This study aims to provide recommendations for handling in accordance with regulations on improving the safety of railway crossings between railways and roads and guidelines on technical guidelines for railway crossings between roads and railways. The survey conducted in this study was a road inventory to determine the geometry of railway level crossings and a survey of road user behavior to.... (read more).

Transforming UrbanMobility: The Influence of Technology on User Experience in App-BasedTransportation Services

Juliater Simarmata, Astri Rumondang Banjarnahor,  Muhammad Hidayat, Dimas Nu’man Fadhil, Honny Fiva Akira

The proliferation of app-based transportation services has profoundly transformed urban mobility, offering enhanced convenience, flexibility, and efficiency. This study examines how technology-driven service quality and promotional strategies collectively shape the user experience within the Indonesian app-based transportation sector. A structured survey was administered to 682 respondents across Java, Bali, and Sumatra. Structural Equation Modeling (SEM) was employed to analyze the relationships between Price, Promotion, Service Quality, Customer Satisfaction, and Loyalty, focusing on their impact on the overall user experience. The findings.... (read more).

The Influence of Precursorto Activator Ratio and Curing Temperature on Geopolymer Paste with One-PartMethod

Ari Widayanti, Iqlima N. Amini, Anandita Ade Putri, Anjas Handayani, Januarti J. Ekaputri, Himawan T. B. M. Petrus, Ria A. A. Soemitro

Geopolymer is an eco-friendly material that serves as a sustainable alternative to Portland cement in construction. This binder reduces carbon dioxide emissions from cement production. However, its manufacturing process remains complex and requires professional expertise. This study explores an environmentally friendly cement produced through the “One-Part Method” (or the “just add water” method), which simplifies geopolymer application, making it as user-friendly as Portland cement. However, research on the performance of one-part geopolymers with varying.... (read more).

Application of the Orangutan Optimization Algorithm for Solving Vehicle Routing Problems in Sustainable Transportation Systems

Anita Susanti, Belal Batiha, Tareq Hamadneh, Gharib Mousa Gharib, Widi Aribowo, Haider Ali, Riyadh Kareem Jawad, Mahmood Anees Ahmed, Ibraheem Kasim Ibraheem, Zeinab Monrazeri, Mohammad Dehghani

Metaheuristic optimization algorithms are powerful tools for solving complex transportation problems. This study investigates the application of the Orangutan Optimization Algorithm (OOA) to a Vehicle Routing Problem (VRP), aiming to minimize travel distances while adhering to time constraints and vehicle capacity limits. Compared to 12 state-of-the-art algorithms, OOA demonstrated superior performance in convergence speed, solution quality, computational efficiency, and robustness. Its dynamic balance between exploration and exploitation allows it to consistently outperform other methods... (read more).

Density by Design:Evaluating Transit Hubs for Transit-Oriented Development (TOD) in an EmergingIndonesian Metropolis

Kusuma R. Haratama, Ananda M. A. Farizi, Maleakhi C. Saputro, Lena C. Manggalasari, Phitchayathida Thipphaya

Rapid urbanization in Indonesian cities has increased interest in Transit-Oriented Development (TOD) as a strategy to promote compact, mixed-use, and transit-supportive urban forms. This study evaluates the TOD readiness of five major transit hubs in Surabaya—Purabaya Terminal, Joyoboyo Terminal, Gubeng Station, Surabaya Kota Station, and Pasar Turi Station—using a spatially explicit Built Environment Index (BEI). A Geographic Information System (GIS) approach was applied to analyze population density, employment density, land use mix, and accessibility within 400, 800, and 1,200 m service areas. These indicators were normalized and aggregated into the BEI under multiple weighting scenarios to reflect different planning priorities. The results identify Gubeng Station as the most TOD-ready hub, supported by high density, balanced job–to-population ratio, and strong land use integration... (read more).

Simulation of AutomatedGuided Vehicles System to Improve Container Operational Performance inSupporting Sustainable Port Transportation

Anita Susanti, Kusuma R. Haratama, Ari Widayanti, R Endro Wibisono, Adhelia Syahada Annindya Lukito

Container flow at Terminal Petikemas Surabaya (TPS) increased by 9.3% to 1,584,774 TEUs, creating pressure on internal transport, yard access, and loading–unloading performance. This study evaluates the potential use of an Automated Guided Vehicle (AGV) system to support more responsive container movement within the terminal. A simulation-based framework integrates Particle Swarm Optimization (PSO) for task scheduling and AGV assignment with the A-star (A*) algorithm for route planning. Ten simulation runs were conducted to examine route variability under different traffic-density and obstacle conditions. The framework reached the destination in 9 of 10 runs; the best run required 40 steps, 1.04 minutes, and 1.75% occupancy, while one run failed due to an unresolved... (read more).

Motorcycle ParkingAvailability Monitoring Using YOLOv5 and Mobile-Based Systems

R. Endro Wibisono, Anita Susanti, Kusuma Refa Haratama, Widi Aribowo, Karin Nur Fitria Ariyanti, Diego Oliva, Hisham A. Shehadeh, Abubakar Umar

The increasing number of motorcycles in developing countries has intensified parking management challenges, particularly in high-density environments with irregular vehicle arrangements. This study proposes a motorcycle parking availability detection system using the YOLOv5 object detection algorithm to address limitations of conventional parking methods. The research contribution is the development of a context-aware detection framework using a locally collected dataset and the evaluation of its performance under real-world parking conditions.The dataset consists of 1,200 images collected from campus parking areas and is divided into training, validation, and testing sets. The images were... (read more).

Enhancing Urban Mobility: ARoad Diet Approach to Improve Traffic Capacity and Pedestrian Safety

Kusuma R. Haratama, Peter Furth, Anita Susanti

Urban intersections often face the dual challenge of managing high traffic volumes while ensuring pedestrian safety. This study investigates whether road diet strategies—reducing travel lanes while reallocating space for pedestrians—combined with signal timing optimization, can improve both vehicle throughput and safety at complex urban intersections. The North Washington Street corridor in Boston, including City Square and Keany Square, was selected due to its congestion and long pedestrian crossing distances. Data were collected via sensors and manual counts in December 2022. Microscopic simulations conducted in PTV Vissim, calibrated to field observations within ±5% accuracy. The intervention... (read more).

Analysis on calculationof Vehicle Operating Cost (VOC) at Gejayan intersection before and after flyover ring road operation in Yogyakarta

R. Endro Wibisono, M. S. D. Cahyono and A. Muhtadi

Gejayan intersection is located in Sleman Regency of Yogyakarta. Fly Over will be constructed at the intersection in the ring road of Yogyakarta. The nearest intersection to the east is Gejayan Intersection with a distance of 1573.11 meters. Gejayan intersection performance in 2018 has reached saturation by having Level of Service E. The more severe conditions will occur in the next 10-20 years. If it is planned using Fly Over on the ring road in Yogyakarta connecting Gejayan intersection, the vehicles flow must have other alternative by road widening. The most important step is to predict... (read more).