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OPTIMIZATION OF LOCATION MODEL OF CAPACITATED NETWORK Soehodho, Sutanto; Nahry, Nahry
Jurnal Transportasi Vol 11, No 1 (2011)
Publisher : Jurnal Transportasi

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This study concerns with the research work on Location Model of Public Service Obligation State-Owned Company (PSO-SOC). Its aim is to develop an approach of making location decision on distribution facilities of such company, in which capacities of facilities are limited (capacitated facilities) and it deals with single commodity. Heuristic solution is proposed to modify established Add Algorithm, which is designed for uncapacitated facilities. The Network Representation is used to represent original problem of LocationModel. An example is provided to illustrate the proposed step-wise of solving the model.Keywords: location model, Add Algorithm, Network Representation.

KAJIAN ANALISIS KARAKTERISTIK PARKIR OFF-STREET KENDARAAN ANGKUTAN BARANG DAN PENGANTARAN BARANG DI PUSAT PERBELANJAAN PASAR JATINEGARA Evriyani, Desy; Nahry, Nahry; Soehodho, Sutanto
Prosiding Forum Studi Transportasi Antar Perguruan Tinggi Vol 2 No 1 (2015): Prosiding Forum Studi Transportasi antar Perguruan Tinggi
Publisher : FSTPT Indonesia

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Pasar Jatinegara as one of the shopping center for retailer in Jakarta has a problem with parking lot issue. As a wholesale shopping center, the parking lot is dominated by freight transport. This situation is getting worse due to on-street parking restriction during working days start from 17th June 2013. It caused the capacity of parking decreases. This research is aimed to analyze parking characteristic of freight and goods conveyance at Pasar Jatinegara. The characteristic of off-street parking such as accumulation, volume, duration, turn over, parking index, index of parking activity (IAP), and V/C ratio indicates that the performance of parking service before and after the regulation is still not sufficient. Meanwhile the characteristics of goods conveyance and stores delivery are still bad. There are few solutions proposed in order to improve the performance of off-street parking and goods conveyance.

OPTIMIZATION OF LOCATION MODEL OF CAPACITATED NETWORK Soehodho, Sutanto; Nahry, Nahry
Jurnal Transportasi Vol 11, No 1 (2011)
Publisher : Jurnal Transportasi

This study concerns with the research work on Location Model of Public Service Obligation State-Owned Company (PSO-SOC). Its aim is to develop an approach of making location decision on distribution facilities of such company, in which capacities of facilities are limited (capacitated facilities) and it deals with single commodity. Heuristic solution is proposed to modify established Add Algorithm, which is designed for uncapacitated facilities. The Network Representation is used to represent original problem of LocationModel. An example is provided to illustrate the proposed step-wise of solving the model.Keywords: location model, Add Algorithm, Network Representation.

The Distribution of Schools Not Served by BRT Trans Semarang in Semarang City Sari, Nanda Iryani Intan; Soehodho, Sutanto; Sumabrata, R. Jachrizal
Smart City Vol. 4, No. 2
Publisher : UI Scholars Hub

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For developing countries, the implementation of sustainable transportation systems is crucial to involve substantial investments. Mobility in Indonesia can have an impact on both origin and destination areas. This research aims to determine the distribution of schools that are not served in the city of Semarang. Consequently, an identification can be made to formulate a recommendation for the development of operational routes for the BRT Trans Semarang to enhance connectivity between other transportation modes on routes with high demand. A quantitative descriptive analysis was performed to assess BRT Trans Semarang through utilizing government documents, news, and official websites, followed by interviews, FGD, and direct surveys with BRT users and providers. It is known that there are a number of schools that are not served in 16 districts of the city of Semarang, namely Semarang West (51), Semarang South (25), Semarang Central (41), Semarang East (36), Semarang North (40), Banyumanik (49), Tembalang (36), Gunung Pati (16), Pedurungan (50), Gajah Mungkur (31), Mijen (26), Candisari (21), Tugu (14), Gayamsari (25), Ngaliyan (27), and Genuk (29). Feeder Route 3 is popular but has limited capacity. 79.20% of respondents support extending BRT routes to their schools.

Study of Factors Influencing Traffic Violations in Jakarta: Perspective of the Theory of Planned Behavior (TPB) in the Implementation of Electronic Traffic Law Enforcement (ETLE) Ruci, Khobat Dewa; Soehodho, Sutanto; Sumabrata, R. Jachrizal
Smart City Vol. 4, No. 2
Publisher : UI Scholars Hub

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Transportation safety in Indonesia reflects its culture and modernity, but the high rate of traffic accidents indicates significant challenges. Data from IRSMS and Polda Metro Jaya reveal an increase in accidents and traffic violations, reinforcing the need for effective law enforcement. The implementation of ETLE, supported by Law No. 22 of 2009 on Road Traffic and Transportation and Law No. 19 of 2016 on Electronic Information and Transactions, is a strategic effort to improve law enforcement. However, its effectiveness in Jakarta context still requires in-depth evaluation. This thesis focuses on the psychological factors in the use of ETLE using the Theory of Planned Behavior. The analysis results show that factors such as self-confidence, anxiety, and influence of other drivers significantly contribute to the tendency of violations. With a beta coefficient of 0.029 and a t-statistic of 15.776, a holistic approach to road safety is required, involving infrastructure, law enforcement, driving education, and psychological aspects, to achieve the WHO target of reducing accidents by 50% in the Decade of Action for Road Safety 2021-2031.

Analysis of Traffic Performance and Passenger Car Equivalent Value in Tangerang – Merak Toll Road Section Sidabutar, Jonathan; Soehodho, Sutanto; Nahry, Nahry
Smart City Vol. 4, No. 2
Publisher : UI Scholars Hub

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Economic growth involves massive movement of logistics, where goods transported by land become the main choice by supplier. One of them being the main access for connecting Java and Sumatera is the Tangerang – Merak toll road. An increase in traffic volume occurs every year, followed by additional problems such as congestion which obviously affects traffic performance. Given this reason, it is necessary to evaluate traffic performance through parameter assessments, which are the degree of saturation and travel speed. This research was carried out on the Tangerang - Merak toll road section KM 32,300 to KM 35,500 towards Jakarta for one week using traffic CCTV recordings, then selected on 17 April 2024. The calculation results obtained for each average weighted value for the degree of saturation (Ds) at 0.36 and average of the Space Mean Speed is at 33.08 kph. Based on traffic performance analysis, the volume parameter does not indicate a problem, and is included in the LOS A category. However, the travel speed parameter shows an issue and included in the LOS F category. This will be the focus problem within the scope of the research. On the other side, traffic composition which includes variations in the number of vehicles per time and type of vehicle. Given this kind of variation, a Passenger Car Unit value is needed that can equalize the existing different vehicle types into a uniform standard, including who commit over dimensional violations. Where the value of passenger car equivalent of an over-dimensional vehicle is changing, it is necessary to re-calibrate the emp value. Researchers used the Volume Delay Function formula to calculate travel time, then explore a combination of emp values using the dynamic programming method by comparing survey travel time with the simulation one. The difference between the PKJI standard value and the calibrated pce value proves the problem of these vehicles commit over dimension violations on the Tangerang – Merak toll road. For this reason, it is hoped that this research which evaluate traffic performance, travel time and passenger car equivalent values, can be used as a basis for further policy making to improve the performance of the Tangerang – Merak toll road.

Evaluation of Coal Transport Route in Jambi City (Talang Duku Port-East Ring Road II) Angella, Dwi; Soehodho, Sutanto; Nahry, Nahry
Smart City Vol. 4, No. 2
Publisher : UI Scholars Hub

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In its implementation, the role of coal transportation infrastructure is important in supporting the mining industry in Jambi City. However, it also causes various complex problems; one of them is traffic congestion on arterial roads in Jambi City. In May 2023, the Jambi Regional Police of the Republic of Indonesia issued a notification letter to stop the mobilization of coal transportation in Jambi Province. The policy caused several coal companies to switch their transportation method to shipping in order to continue operating, while several other companies stopped operating until an indeterminate time. Therefore, this study aims to compare traffic performance before and after the implementation of the policy on Jambi City arterial roads, especially on Talang Duku Port Road and East Ring Road II. The method used was a comparative analysis of the degree of saturation before and after the enactment of regulations on the prohibition of coal truck operations. The results of this study show the importance of traffic management as one of the solutions to reduce traffic congestion. Nevertheless, other alternatives are still needed to support the smooth operation of coal transportation activities.

ANALYSIS OF COST AND TIME EFFICIENCY IN CONTAINER DISTRIBUTION BETWEEN CONTAINER TRUCK AND FREIGHT TRAIN FROM INDUSTRIAL AREA TO PORT Imayanti, Indah; Soehodho, Sutanto; Yusuf, Nahry
Smart City Vol. 4, No. 2
Publisher : UI Scholars Hub

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Jakarta International Container Terminal (JICT) in Tanjung Priok Port , which serves export and import containers, can serve up to 5500 TEUs daily. However, no more than 1% of the total containers are transported by freight trains, meaning that 99% of container distribution from industrial areas is carried by trailer trucks. This condition causes a long queue at the container terminal entrance, resulting in delays in the services as well. Currently, Tanjung Priok Port is connected to rail transportation from Cikarang dry port with the frequency of twice a day with 30 flatcars (FC) for each trip. The capacity of one series of freight trains from Cikarang dry port to Tanjung Priok Port can reach 30 Feus or 60 Teus. However, the container distribution using freight trains is still less optimal because of the double handling at the JICT emplacement which is located outside JICT and the use of trailer trucks to move the containers from the area to JICT. The cost of transporting export and import containers always increases year by year because of the slow transportation due to inefficiency of the container depot location in Tanjung Priok area. In this research, the method used to determine the efficiency of container transportation is divided into three scenarios. The first scenario is when the container is fully transported by truck from the industrial area. The second scenario is when the container is transported by train and handled twice while entering JICT. Finally, the third scenario is when the JICT emplacement is located inside the JICT area, changing the business process of containers coming in and out, needing no stacking in the JICT container yard, relocating the container depot placement, consolidating containers, and automating equipment at JICT to reduce the cost and time of containers for export and import. After analyzing the costs and time of the three scenarios, it was found that the third scenario could reduce travel costs and shorten container time when exporting and importing. The 3rd scenario can reduce the cost by almost 50% from the 1st and 2nd scenarios due to container consolidation.

Analysis of the Selection of River Transportation Modes that are Integrated with Land Transportation in the City of Banjarmasin Muallif, Muhammad Tsaqib; Soehodho, Sutanto; Nahry, Nahry
Interdiciplinary Journal and Hummanity (INJURITY) Vol. 3 No. 7 (2024): INJURITY: Journal of Interdisciplinary Studies.
Publisher : Pusat Publikasi Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58631/injurity.v3i7.214

The city of Banjarmasin, as the center of economic growth in South Kalimantan, faces significant challenges in terms of mobility. The development of river public transportation is one of the alternatives to overcome urban transportation problems. This study has significance in providing a holistic view of the factors that need to be considered in the selection of river transportation modes that are integrated with land transportation. The study was conducted in the areas of North Alalak Village and Sungai Lulut Village. The data processing method in this study involves testing the completeness of primary and secondary data to describe field conditions, then analyzing the preferences for choosing transportation modes using the AHP method which includes steps such as defining problems, creating hierarchical structures, conducting pairs comparisons, calculating eigenvalues and testing consistency, while the data analysis stage includes the calculation of consistency ratios, consistency vector, average of entries (Zmax) and Consistency Index (CI) to determine the final preference of each alternative. The analysis of priority weights between criteria is calculated to find out the order of the most influential criteria in selecting transportation modes. The results of the study can provide guidance for decision-making at the level of governments, transport companies and communities in developing and adopting more efficient transport systems. This research is expected to be useful for the author to expand insights, for the government and operators as input in the development of integrated transportation, and for the general public as a reference for more efficient modes of transportation.

Identification of Variables Affecting the Number of Traffic Accident Casualties (Intersections (4 and T) in Yogyakarta) Dewi, Ari Tri Kusuma; 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.v4i2.1809

Yogyakarta has recorded a relatively high rate of traffic accidents, with a consistent trend throughout 2024. This condition is influenced by high traffic density, a consequence of increased activity in the education, tourism, and economic sectors, despite the implementation of various mitigation efforts. The aim of this study is to identify the variables that potentially influence the number of traffic accident casualties at (4 and T) intersections in Yogyakarta. The study utilized initial data collection through CCTV recordings at accident locations, data from the Integrated Road Safety Management System (IRSMS), Google Street View observations, and multiple linear regression analysis combined with variable reduction based on Variance Inflation Factor (VIF) values. The results indicate that eight variables significantly influence the number of traffic accident casualties in Yogyakarta. However, limited Smart City CCTV coverage restricts comprehensive analysis. Future research requires expanded intersection monitoring and extended study scope to enhance validity and representation.

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