Article Per Year (5 Year)
p-Index From 2020 - 2025
4.497
P-Index
This Author published in this journals
All Journal Syntax Literate: Jurnal Ilmiah Indonesia JOURNAL OF CIVIL ENGINEERING, BUILDING AND TRANSPORTATION ILKOM Jurnal Ilmiah Journal on Education Almana : Jurnal Manajemen dan Bisnis Borneo Engineering : Jurnal Teknik Sipil Jurnal Teknik Mesin Indonesia JURNAL TEKNIK Jurnal Fisika Indonesia Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety) Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Teknologi Transportasi dan Logistik Jurnal Teknik Mesin, Industri, Elektro dan Informatika Jurnal Penelitian Rumpun Ilmu Teknik Jurnal Pengabdian West Science Jurnal Psikologi dan Konseling West Science Jurnal Sains, Nalar, dan Aplikasi Teknologi Informasi Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer Jurnal Keselamatan Transportasi Jalan
Siti Shofiah
Politeknik Keselamatan Transfortasi Jalan
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Neuroscience Physics Public Health Social Sciences Transportation Other

Published : 28 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 28 Documents
Search

 1   2   3 
Efisiensi Rem Kendaraan Isuzu Tld 24 C Dengan Variasi Beban Dan Tekanan Angin Ban Nur Halimatus Sa'diyah; Herman Mariadi Kaharmen; Siti Shofiah
Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety) Vol. 7 No. 2 (2020): 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.v7i2.208

Abstract

Abstrak Kendaraan adalah suatu sarana angkut di jalan yang terdiri atas kendaraan bermotor dan kendaraan tidak bermotor sesuai dengan PP nomor 55 tahun 2012 pasal 1. Tekanan angin ban yang kurang pada kendaraan menimbulkan dampak negatif yaitu pengereman tidak maksimal. Penelitian ini membahas pengaruh perbedaan tekanan angin ban terhadap hasil pengujian rem di UPTD Pengujian Kendaraan Bermotor Wiyung Kota Surabaya, pada mobil barang Isuzu TLD 24 C bak terbuka menggunakan alat uji brake tester guna menentukan nilai pengaruh perbedaan tekanan ban terhadap efisiensi pengereman. Metode yang digunakan eksperimental pada kendaraan tanpa beban, beban < 10% JBI dan beban > 10% JBI. Efisiensi rem paling besar bernilai 80.5% dan paling kecil bernilai 41%. Nilai efisiensi rem kendaraan tanpa beban terdapat penyimpangan besar, sumbu 1 bernilai 18.8% dan sumbu 2 bernilai 8.5%. Keduanya tidak memenuhi standar yang ditetapkan JIS. Oleh karena itu, perlunya peninjauan kembali pada PM 134 tahun 2015 pasal 26 ayat 6 mengenai toleransi pemuatan beban kendaraan dan PP nomor 55 tahun 2012 pasal 67 ayat 1 mengenai kelulusan pengujian rem tidak hanya mencantumkan efisiensi rem tetapi juga mencantumkan peraturan mengenai penyimpangan rem pada kendaraan agar tidak membahayakan keselamatan di jalan. Kata Kunci : efisiensi rem, Isuzu TLD 24 C, brake tester
Teknologi Diesel Particulat Filter Sebagai Upaya Mengurangi Emisi Gas Buang Dan Kebisingan Mesin Diesel Kendaraan Niaga Moch. Aziz Kurniawan; Aat Eska Fahmadi; Yogi Oktopianto; Siti Shofiah
Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety) Vol. 8 No. 2 (2021): 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.v8i2.350

Abstract

The use of diesel engines in commercial vehicles is still the main choice and the most widely used. The increasing number of commercial vehicles that use diesel engines can pollute the environment and cause noise. In order to reduce exhaust emissions and noise in diesel engines, a particulate filter diesel technology was created which is installed in commercial vehicle diesel engines. This study uses an experimental method. The test was carried out on a Mitsubishi L300 commercial vehicle diesel engine type 4D56 4 cylinder with a cylinder capacity of 2477 cc. The diesel particulate filter technology uses a half honeycomb model made from galvalume plates, with variations in the addition of filters in the form of glass wool of 50 grams, 100 grams, 150 grams, 200 grams, and 250 grams. Testing the exhaust emissions of a diesel engine using a TEN Automotive Equipment Innova 2000 multigas analyzer with a smoketester. Sound noise testing using a sound level meter test tool LT Lutron SL-4001. The test results with the addition of diesel particulate filter technology can reduce exhaust emissions and sound noise. The use of diesel particulate filter technology can reduce exhaust emissions in the form of Particulate Matter (PM) most optimally at the addition of a 100 gram filter with a decrease of 45.9%. The most optimal reduction in noise is the addition of a 50 gram filter with a decrease of 26.5%.
Analisis Lalu Lintas Ruas Jalan Denpasar-Gilimanuk Tabanan Bali Masa Pendemi Covid 19 Dwi Wahyu Hidayat; Budi Mardikawati; Yogi Oktopianto; Siti Shofiah
Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety) Vol. 8 No. 2 (2021): 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.v8i2.406

Abstract

Tabanan Regency is one of the regencies that is traversed by the main route connecting Gilimanuk-Denpasar so that the road is known as Jalan Raya Denpasar-Gilimanuk. The road is a National Road which is the main route connecting the districts in western Bali, namely Jembrana Regency, Tabanan Regency, Badung Regency and Denpasar City. In addition, with the increasing activities of the Tabanan community, especially those in the city of Tabanan who travel either to the city of Denpasar or to other areas, passing through this route which is the main route that serves transportation activities from Tabanan to Denpasar and vice versa. In this location there are many places that cause attraction, namely shopping centers, stalls and places of worship. Therefore, congestion on these roads often occurs, especially at peak hours of traffic flow (Peak Hour). This research was conducted on the performance of roads to determine the level of service. The data analysis process uses the method of calculating the Manual Kapasitas Jalan Indonesia (MKJI) 1997). The results showed that the Tabanan-Denpasar road, Jl Ahmad Yani, during the COVID-19 pandemic PPKM level 4 was obtained, the road capacity was 2,457 smp/hour, the free flow speed was 46.48 km/hour, the degree of saturation was 0.79, the light vehicle speed value was 36 km/hour with a travel time of 25 seconds. Based on the value of the degree of saturation on the Tabanan-Denpasar road, Jl Ahmad Yani during the COVID-19 pandemic PPKM level 4 of 0.79, then the level of service for the road was entered at Service level D.
Nilai Guna IP Webcam Sebagai Alat Bantu Pemeriksaan Bawah Kolong Kendaraan Bermotor Siti Shofiah; Tri Griyo Arti; Gunawan Gunawan
Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety) Vol. 9 No. 2 (2022): 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.v9i2.445

Abstract

Under vehicle inspection is part of the vehicle inspection process and is the most important part of the vehicle because almost 80% of the most important parts of the vehicle cannot be seen directly under the vehicle. Observation of the vehicle with the help of IP Webcam with a qualitative descriptive approach. The equipment used in this study consisted of motor vehicles to be tested, Android phones handheld cameras, laptops/computers, monitors and HDMI/VGA cables, wireless/WiFi, printers. Processing of graded data with hypothesized mean. The results of the study show that an inspector can provide information about damage audio-visually and the vehicle owner can see it from the screen without having to go under the vehicle. Then 6 categories of utility values ​​were evaluated, indications of need, comfort, appearance, time to use an IP web camera at a high value/scale were obtained. Meanwhile, satisfaction and suitability on the value/moderate scale. Therefore, it can be concluded that the use of an IP web camera as a vehicle inspection tool has been successful.
Reliability-Centered Maintenance (RCM) Approach in Fleet Maintenance To Enhance Transportation Efficiency and Safety Sugianto; Muthoriq, Ery; Pranoto, Ethys; Arjuna, Kevin; Shofiah, Siti
Jurnal Teknik Mesin Indonesia Vol. 20 No. 1 (2025): Vol. 20 No. 1 (2025): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v20i1.878

Abstract

Efficient and reliable public transportation systems, particularly bus services, played a crucial role in regional mobility and economic development. However, maintenance challenges impacted service quality, as seen in PT. SPS – Solo’s Scania fleet. Traditional reactive maintenance methods proved insufficient, leading to increased operational costs and unexpected failures. This study applied Reliability-Centered Maintenance (RCM) to optimize maintenance policies, identifying critical components and establishing effective strategies. Failure Mode and Effect Analysis (FMEA) revealed the brake chamber as the most critical component, followed by the stabilizer and tie rod/slack adjuster. Maintenance interval analysis recommended Time-Directed (TD) intervals from 26,090 km to 35,084 km and Condition-Directed (CD) intervals from 25,900 km to 70,168 km, based on component degradation patterns. Cost analysis highlighted air bellows as the highest-cost component (Rp. 2,350,000), while brake chambers had the lowest cost (Rp. 150,000). The study demonstrated that RCM improved fleet reliability and reduced maintenance costs. Implementing structured maintenance schedules, training programs, and condition monitoring systems was recommended. These findings provided a foundation for enhancing longdistance bus operations and could be adapted for other transportation sectors to achieve cost-efficient and reliable fleet management.
Predictive Modeling of Microsleep Incidents in Indonesian Drivers Using Random Forest: A Data-Driven Approach for Road Safety Enhancement Lestari, Astri; Rahmawati, Ainun; Shofiah, Siti; Siswanto, Joko; Putra, Benny Hamdi Rhoma
Jurnal Sains, Nalar, dan Aplikasi Teknologi Informasi Vol. 4 No. 2 (2025)
Publisher : Department of Informatics Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/snati.v4.i2.39984

Abstract

Microsleep presents a critical safety challenge for Indonesian drivers, particularly affecting long-distance transportation where existing detection methods remain costly and impractical for widespread deployment. This study introduces a novel application of Random Forest algorithm specifically tailored to Indonesian driving contexts, utilizing locally-sourced accident data combined with driver behavioral surveys to predict microsleep likelihood. Unlike previous studies that relied primarily on physiological monitoring or international datasets, this research leverages accessible vehicle and environmental variables including driving duration, road conditions, weather patterns, and work schedules from National Transportation Safety Committee (KNKT) records spanning 2013-2023. The Random Forest model, configured with 100 trees and maximum depth of 10, demonstrated 87.50% overall accuracy with perfect recall (1.00) for microsleep detection when validated using stratified k-fold cross-validation. This study uniquely contributes to the field by demonstrating that context-specific environmental and behavioral factors can effectively predict microsleep incidents without expensive physiological monitoring, offering a practical foundation for developing cost-effective vehicle safety systems tailored to Indonesian road conditions and driving patterns. The findings provide actionable insights for transportation policy development and establish a framework for implementing affordable microsleep detection in developing countries with similar traffic characteristics.
The Effect of Transformational Leadership and Management Control System on Organizational Performance through Organizational Culture as an Intervening Variable Sentoso, Antony; Shofiah, Siti; Purwianti, Lily
Almana : Jurnal Manajemen dan Bisnis Vol 9 No 2 (2025): August
Publisher : Bandung: Prodi Manajemen FE Universitas Langlangbuana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36555/almana.v9i2.2845

Abstract

Public sector organizations are currently experiencing rapid development and change. As one of the public sector entities, the Riau Islands Provincial Government faces various challenges in realizing its vision and mission. In accordance with the 2021-2026 Regional Medium-Term Development Plan (RPJMD) with the vision of 'Realizing a Prosperous, Competitive and Cultured Riau Islands', one of whose missions is to Implement Clean, Open and Service-Oriented Governance. Various challenges in achieving this vision require serious attention, especially in the aspects of Transformational Leadership and management control systems applied to all OPDs in the Riau Islands Province. The purpose of this study is to see the effect of Transformational Leadership and management control systems on Organizational Performance with Organizational culture as an intervening variable. This type of research is Quantitative. The number of samples in this study was 318 respondents in the OPD of the Riau Islands Province. The researcher used the help of the SMART PLS software program, with an approach in modeling using the Structural Equation Model (SEM) analysis. The results of this study all research hypotheses were accepted and Organizational Culture was an intervening variable between Transformational Leadership on Organizational Performance and Management Control System on Organizational Performance.
Pengembangan Instrumen Uji Perlambatan Kendaraan Berdasarkan Gerak Lurus Berubah Beraturan pada Metode Road Test Wibowo, Muhammad Riski Septiana; Hakim, M. Iman Nur; Shofiah, Siti; Risqi, Muhammad Isro; Firdaus, Denisya Haddad
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 5 (2025): Oktober: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v3i5.981

Abstract

The braking system was a crucial component in ensuring the safety of motor vehicles on the road. Brake failures, such as brake fade or total malfunction, could result in fatal accidents. Therefore, an accurate and realistic testing method was necessary to measure the effectiveness of a vehicle’s braking system. This study aimed to develop a deceleration measuring device based on GPS, which could be used in road test methods. The device was designed using an ESP32 microcontroller combined with a BN-220 GPS module, RTC real-time clock sensor, 16x2 LCD, thermal printer, and microSD storage media. Testing was conducted on a Mitsubishi L300 vehicle at the Depok Beach runway in Yogyakarta, with initial speed variations ranging from 10 to 80 km/h. Calibration results showed that the device had an accuracy of 99.64% with an average error of 0.36%. Meanwhile, the test results recorded deceleration values ranging from 0.74 to 3.26 m/s², depending on the initial speed and braking conditions. Based on these findings, the developed device proved to be accurate and feasible as an alternative method for field testing of braking systems.
Co-Authors Aat Eska Fahmadi Aditya Prima F Agnes Angi Dian Winei Ahmad Basuki Ainun Rahmawati Ambarita, Sihar Aprianto, Rizal Arjuna, Kevin Astiti Astiti Azalia, Noni Gytha Benny Hamdi Rhoma Putra Brasie Pradana Sela Bunga Reska Ayu Brasie Pradana Sela Bunga Riska Ayu Brasie Pradana Sella Bunga Riska Ayu Budhi Kristianto Budi Mardikawati C Trisno Susanto Devin Mahendika Dwi Wahyu Hidayat Dwi Wahyu Hidayat Dwi Wahyu Hidayat, Dwi Wahyu Edi Suharyadi Eka Krisdayanti Eko Sediyono Ery Muthoriq, Ery Fadia Qatrunada Faishal Andhi Rokhman Farhan Afif Zuhrianto Firdaus, Denisya Haddad Frans Tohom Gamar Al Haddar Griyo Arti, Tri Gunawan Gunawan Gunawan Gunawan Hakim, M. Iman Nur Halimatus Sa'diyah, Nur Hanendyo Putro Herman Mariadi Kaharmen Humami, Faris I Made Sukmayasa Indra Tjahyadi Ita Soegiarto Joko Siswanto Kanindia Maulidhany Kanthi Pangestu Wijayanthi Kurniawan, Moch. Aziz Lestari, Astri Lily Purwianti Mardikawati, Budi Mariadi Kaharmen, Herman Moch. Aziz Kurniawan Mohamad Yoga S MS. Viktor Purhanudin Muflihatun - Muh. Safar Muhammad Iman Nur Hakim Nur Halimatus Sa'diyah Nurul Fitriani Nuryati Solapari Peni Susapti Pranoto, Ethys Pratindy, Raka Rinovian Rais Risqi, Muhammad Isro Riza Phahlevi Riza Phahlevi Marwanto Rizka Amanda Choirani Sentoso, Antony Setiawan, Santo Shafa Nadhifah M Sri Yunita Ningsih Sugianto Suprapto Hadi Suprapto Hadi Suyuti Suyuti Tri Griyo Arti Wibowo, Muhammad Riski Septiana Yogi Oktopianto Yohanes Susanto Zainal Arifin Hasibuan