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Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety)

ktj
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Published by Politeknik Keselamatan Transportasi Jalan

ISSN : 23384247 EISSN : 27217248 DOI : https://doi.org/10.46447/ktj

Automotive Engineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Mechanical Engineering Transportation

Jurnal Keselamatan Transportasi Jalan adalah jurnal yang mengulas hasil penelitian atau kajian konseptual di bidang keselamatan transportasi jalan. Jurnal ini terbit setiap 6 (Enam) bulan.

Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)

Articles 128 Documents

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Analisis Lokasi Rawan Kecelakaan Pada Jalan Dengan Medan Datar Dan Bukit Hadi, Suprapto; Wahyudi, S. Imam; Wibowo, Kartono; Oktopianto, Yogi; Eska Fahmadi, Aat; Widya Anggraeni, Inneke
Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety) Vol. 12 No. 1 (2025): JURNAL KESELAMATAN TRANSPORTASI JALAN (INDONESIAN JOURNAL OF ROAD SAFETY)
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46447/ktj.v12i1.686

Accidents occur on various road terrains that cause drivers to experience losses from property to fatalities. Prof. Hamka Street and Siliwangi Street are located in the city of Semarang where Prof. Hamka Street is a road with a hilly topography while Siliwangi Street is a flat road. Problems occur on these road sections such as the many accidents that result in fatalities. The existing problems need to be addressed immediately so that they can reduce the risk of accidents in the future. The stages carried out first analyze the characteristics of accidents and vulnerable locations so that they know the most appropriate handling points and recommendations. In determining the location points prone to accidents using the EAN and UCL methods while in identifying the hazards of vulnerable locations using HIRARC. The results obtained on Prof. Hamka Street, the location points are at STA 6 (0 + 700) and 9 (1 + 000) while on Siliwangi Street, the location prone to accidents is at STA 18 (1 + 900) and 5 (0 + 600). The recommended handling is to repair the condition of the road surface that has cracks at the joints, signs at accident-prone locations that are still very lacking, street lighting at accident-prone locations, maintenance on the road so that obstacles on the side of the road do not block visibility and installation of vehicle speed control devices.

Representasi Perseptual Mapping Masyarakat Terhadap Perbedaan Kualitas Transportasi Di Surabaya Dengan Multidimensional Scalling Syaugi Sungkar, Salman; Khairian, Farhan Aldan; Marpaung, Josua Ronaldo Davico; Hardiansyah, Fernanda Rizky; Saifudin, Toha; Ana, Elly
Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety) Vol. 12 No. 1 (2025): JURNAL KESELAMATAN TRANSPORTASI JALAN (INDONESIAN JOURNAL OF ROAD SAFETY)
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46447/ktj.v12i1.689

Infrastructure is one of the important factors in driving economic growth, and transportation is an inseparable part of it. This research aims to assess the sustainability of transportation in Surabaya City by looking at the level of user satisfaction from four main aspects, namely speed, comfort, safety, and price. The research was conducted in 2025 by involving 32 respondents. The data was analyzed using the Multidimensional Scaling (MDS) method, which was used to map six types of transportation modes: Indonesian Railways (KAI) Local, Suroboyo Bus, motorcycle online ojek, car online ojek, TransJatim Bus, and city transportation (angkot) or wara-wiri. The results show that Suroboyo Bus obtained the highest satisfaction score from users, with an average value of 3.13. Meanwhile that, the results of MDS mapping divide transportation modes into four groups, namely The first quadrant contains KAI Local and city transportation, the second quadrant is only filled by online motorcycle taxis, the third quadrant is inhabited by online car taxis, the fourth quadrant includes two bus-based transportation modes, namely Suroboyo Bus and TransJatim Bus. This model is evaluated using stress value of 0.06650 and RLQ of 0.97611. Both values indicate that the model is classified as good and reliable to describe customer satisfaction perceptions of transportation modes in Surabaya.

Pengaruh Penggunaan Voltage Stabilizer Di Mesin KVY Pada Emisi Gas Buang, Konsumsi Bahan Bakar Dan Prestasi Mesin Yang Dihasilkan W. Praja, Sumantri; Yudhanta, Ricko; Schouten, Femmy; Wijonarko, Bambang; Tri Indra, Guntur
Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety) Vol. 12 No. 1 (2025): JURNAL KESELAMATAN TRANSPORTASI JALAN (INDONESIAN JOURNAL OF ROAD SAFETY)
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46447/ktj.v12i1.692

One solution to make the combustion that occurs in a motorbike closer to perfect is by utilizing the use of a Voltage Stabilizer. The performance of the Voltage Stabilizer is able to focus the electric current from the coil, so that the sparks emitted by the spark plugs are greater than before. Through the measurement results, in the condition of the Voltage Stabilizer installed, the lowest CO level was 0.72%vol, the lowest CO2 was 6.06%vol, the lowest HC was 1336 ppmvol occurred at an engine speed range of 5000 rpm. The lowest O2 level of 6.25%vol was obtained at an engine speed of 5000 rpm when the standard condition was without the Voltage Stabilizer installed. The highest O2 level obtained was 17.12%vol at an engine speed of 1000 rpm with the Voltage Stabilizer installed. The highest Torque (T) value was 8,722 Nm, and the highest Power (P) value was 8,414 PS at an engine speed range of 8000 rpm. Occurred when the Voltage Stabilizer was installed. With the installation of Voltage Stabilizer, it causes an increase in the Torque value of 11.93% and Power of 12.80% produced. The highest Fuel Consumption value of 0.642 Kg/h when the engine speed is in the range of 8000 rpm, occurs in conditions without the Voltage Stabilizer installed. The lowest Fuel Consumption value of 0.094 Kg/h when the engine speed is in the range of 1000 rpm, occurs in conditions with the Voltage Stabilizer installed. Furthermore, the installation of the Voltage Stabilizer causes a decrease in the Fuel Consumption value of 14.22%. This happens because the installation of the Voltage Stabilizer can stabilize the current and voltage obtained from the Battery/Accu to be distributed to the electrical components of the vehicle, so that there is efficiency in the vehicle's electrical supply, affecting emissions and fuel consumption produced.

Analisis Kontribusi Human Error terhadap Kecelakaan Lalu Lintas di Bali: Pendekatan Mixed-Method dengan Desain Triangulasi Konvergen Mardikawati, Budi; Mulyaningtyas, Dinda One; Fitasari, Yusime
Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety) Vol. 12 No. 1 (2025): JURNAL KESELAMATAN TRANSPORTASI JALAN (INDONESIAN JOURNAL OF ROAD SAFETY)
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46447/ktj.v12i1.693

This study aims to analyze the contribution of human error factors to traffic accidents in Bali using a mixed-method approach with a convergent triangulation design. Data were collected from three main sources: traffic accident records from the Bali Regional Police for the 2023–2024 period, a survey of 166 respondents, and in-depth interviews with five road safety experts. Quantitative analysis was conducted through statistical descriptions, Incident Rate per Million Vehicle Kilometers (IRMS), and assessment of public understanding levels, while qualitative analysis was carried out using a thematic approach supported by ChatGPT software. The results show that the majority of accidents occurred in Denpasar, with victims predominantly in the young adult age group (20–29 years), with senior high school education or equivalent, and without a driver's license. The most common type of accident was single-vehicle crashes involving motorcycles, occurring on collector roads in the afternoon, under clear weather and good road conditions. The survey revealed that only 3 out of 9 aspects were well understood by most respondents, indicating the need for public outreach regarding age, occupation, driver behavior, road conditions, road geometry, and weather. Expert interviews emphasized the importance of education through direct outreach, mass media, improved infrastructure, and stricter law enforcement. This study highlights the need for systemic and educational interventions to reduce the contribution of human error to traffic accidents in Bali.

Studi Eksperimental Pemasangan Oil Catch Tank (OCT) Pada Mesin 3SZ- VE Terhadap Emisi Gas Buang Dan Prestasi Mesin Yang Dihasilkan Yudhanta, Ricko; W. Praja, Sumantri; Schouten, Femmy; Widyanto, Utut; Boedi, Hari
Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety) Vol. 12 No. 1 (2025): JURNAL KESELAMATAN TRANSPORTASI JALAN (INDONESIAN JOURNAL OF ROAD SAFETY)
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46447/ktj.v12i1.694

The use of an Oil Catch Tank (OCT) is intended to optimize the clean air entering the intake manifold and reduce vehicle exhaust emissions. The main function of the OCT is to prevent oil particles or oil vapors from re-entering the intake system. Blow-by gases from the crankcase first enter the OCT tube, where they are trapped by a filter medium (steel wool), allowing only clean air to reach the combustion chamber. From the experimental results, across all OCT filter variations, the lowest CO levels were recorded at 1000 rpm, while the highest CO occurred at 3500 rpm. The highest CO level of 20.97% vol was found under standard vehicle conditions at 4500 rpm. The lowest HC value of 93.57 ppm vol was obtained using a 0.5-micron OCT filter at 5000 rpm. The highest torque and power values of 143 Nm and 108.65 HP, respectively, were achieved when using a 1-micron filter OCT at 6000 rpm. This study confirms that OCT installation can significantly reduce exhaust emissions and improve engine performance. These findings contribute to addressing global environmental concerns, particularly air pollution and climate change caused by the transportation sector. Furthermore, the results support the broader adoption of environmentally friendly automotive technologies, especially in enhancing combustion efficiency and emission control in internal combustion engine vehicles.

Penerapan K-Means Clustering untuk Analisis Kondisi Lalu Lintas di Jalan Ir. H. Soekarno Surabaya Istiqomah, Nurul; Dianita Utami, Wika; Yuliati, Dian
Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety) Vol. 12 No. 2 (2025): JURNAL KESELAMATAN TRANSPORTASI JALAN (INDONESIAN JOURNAL OF ROAD SAFETY)
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46447/ktj.v12i2.725

Growth in the number of vehicles, especially in urban areas, has a significant impact on traffic density, especially during peak hours, so an approach is needed to group traffic conditions based on the volume of all types of vehicles and the degree of saturation using the K-Means Clustering algorithm. The data used are the volume of all types of vehicles and the degree of saturation obtained from the Surabaya City Transportation Agency. The clustering results show that there are 4 clusters of different traffic characteristics, such as the volume of 2-wheeled vehicles during heavy traffic conditions of more than 4700 vehicles with a degree of saturation of more than 0.45. Evaluation using the silhouette coefficient produces a value of 0.63, which means the quality of the cluster is in a medium structure. This study shows that the clustering method is effective in understanding traffic conditions, although additional features can be done to optimize the quality of the cluster.

Analisis Titik Daerah Rawan Kecelakaan Tertinggi Jalan Tol Surabaya – Gempol Dengan Metode Equivalent Accident Number (EAN) Serta Upaya Penanganannya Riskiani, Tasya
Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety) Vol. 12 No. 2 (2025): JURNAL KESELAMATAN TRANSPORTASI JALAN (INDONESIAN JOURNAL OF ROAD SAFETY)
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar

The Surabaya–Gempol Toll Road is a strategic transportation corridor in East Java that supports both the movement of people and the distribution of goods. As traffic volume continues to increase, the risk of traffic accidents along this route has also risen. This study aims to identify accident-prone areas (black spots) and evaluate road users perceptions regarding the causes and handling of incidents, particularly at KM 15–16 of Lane B. A quantitative approach was employed in this research. The Equivalent Accident Number (EAN) method was used to determine accident-prone locations, while user perceptions were assessed using a Likert scale through distributed questionnaires. Prior to analysis, the instrument was tested for validity and reliability using SPSS, involving a total of 30 respondents. The analysis results indicate that the accident-prone area is located at KM 15–16 of Lane B, with KM 15.600 identified as the most critical point. Perceptions suggest that poor lighting and driver fatigue are the primary contributing factors to accidents. Respondents viewed incident handling as fairly adequate, although aspects such as emergency services and reporting systems require improvement. This study recommends enhancements in safety infrastructure and traffic management in high-risk areas.

Studi Komparatif tentang Kemacetan Lalu Lintas Parah Komuter Jabodetabek: Bukti Empiris Survei 2019 dan 2023 Usfatul Hasanah, Linda; Chotib, Chotib
Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety) Vol. 12 No. 2 (2025): JURNAL KESELAMATAN TRANSPORTASI JALAN (INDONESIAN JOURNAL OF ROAD SAFETY)
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Severe traffic congestion remains a persistent challenge in Greater Jakarta (Jabodetabek), driven in part by the imbalance between high private-vehicle use and low public-transport uptake. This study compares the incidence of severe congestion among commuters in 2019 and 2023 and examines changes in trip characteristics. We conduct descriptive analyses of microdata from the Jabodetabek Commuter Surveys (2019, 2023) using IBM SPSS 29.0.2.0(20), focusing on severe-congestion status, trip distance, travel time, and mode. Results show a decline in severe congestion in 2023 despite an increase in the number of commuters. Average trip distance decreased from ~21 km (2019) to ~10 km (2023), and travel time fell from ~60 minutes to ~31 minutes. These shifts are consistent with post-pandemic mobility changes-especially flexible/hybrid work—that shorten trip chains and redistribute demand. The study’s original contribution is a cross-year, microdata-based comparison for Jabodetabek that demonstrates congestion reductions are not solely attributable to roadway capacity increases but also to behavioral changes in mobility, a dimension rarely quantified in prior work. Practical implications include prioritizing suburban traffic management, strengthening multimodal integration for short-to-medium trips (integrated fares, timetable synchronization, improved last-mile services), and advancing behavioral policies to shift users toward public transport.

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Yogi Oktopianto

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Pusat Penelitian dan Pengabdian Masyarakat (P3M) Politeknik Keselamatan Transportasi Jalan Jl. Semeru No.3, Slerok, Kec. Tegal Tim., Kota Tegal, Jawa Tengah 52125

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Home Page

OAI Link

Editorial Team

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Contact Name Yogi Oktopianto

Contact Email yogi.oktopianto@pktj.ac.id

Phone +6285273362725

Journal Mail Official p3m@pktj.ac.id

Editorial Address Pusat Penelitian dan Pengabdian Masyarakat (P3M) Politeknik Keselamatan Transportasi Jalan Jl. Semeru No.3, Slerok, Kec. Tegal Tim., Kota Tegal, Jawa Tengah 52125

Location Unknown, Unknown INDONESIA

Abstract

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Contact Name
Yogi Oktopianto

Contact Email
yogi.oktopianto@pktj.ac.id

Phone
+6285273362725

Journal Mail Official
p3m@pktj.ac.id

Editorial Address
Pusat Penelitian dan Pengabdian Masyarakat (P3M) Politeknik Keselamatan Transportasi Jalan Jl. Semeru No.3, Slerok, Kec. Tegal Tim., Kota Tegal, Jawa Tengah 52125

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INDONESIA