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Nugroho Utomo
Jurusan Teknik Elektro, Universitas Diponegoro Semarang Jl. Prof. Sudharto, SH, Kampus UNDIP Tembalang, Semarang 50275, Indonesia
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Kajian Tingkat Pelayanan dan Aksesibilitas Fasilitas Difabel di Stasiun Kertosono Berdasarkan Metode IPA Anggraini, Ririn; Utomo, Nugroho; Alfiansyah, Achmad Dzulfiqar
Jurnal Civil Engineering Study Vol. 5 No. 02 (2025): Jurnal Civil Engineering Study
Publisher : Civil Engineering of Universitas Islam Nahdlatul Ulama Jepara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34001/ces.v5i02.1526

Abstract

Kertosono Station is one of the major railway stations located in Nganjuk Regency, East Java, serving as an important transit point for intercity travel on the southern route of Java Island. Accessibility in public facilities, such as railway stations, is a crucial issue to support the mobility of persons with disabilities. This study aims to evaluate the service level and availability of facilities for persons with disabilities at Kertosono Station in accordance with the “Regulation of the Minister of Transportation of the Republic of Indonesia Number PM 63 of 2019”. The research method used includes observation, which involves assessing the compliance of disability facility standards at Kertosono Station, and a questionnaire distributed to passengers and visitors who are currently at or have previously visited Kertosono Station. The measurement used is Importance Performance Analysis (IPA), which maps service attributes into four quadrants to determine improvement priorities. The analysis results using the IPA method show that several attributes fall into Quadrant I. These attributes include the availability of a designated waiting area with priority seating, male and female toilets as well as a special toilet for persons with disabilities, and a dedicated path for wheelchairs leading to the train. This indicates that Kertosono Station still requires improvements in priority aspects to support more inclusive and comfortable public services for persons with disabilities as well as all passengers.
Analisa Anjlokan Kereta Api Bima Rute Surabaya-Malang Pada KM 8+625 Petak Wonokromo-Waru Utomo, Nugroho; Solin, Dian Purnamawati
KERN : Jurnal Ilmiah Teknik Sipil Vol. 5 No. 2: Oktober 2019
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Pembangunan Nasional "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/kern.v5i2.13

Abstract

Peristiwa anjloknya kereta api pada rel merupakan kondisi dimana kereta api tidak dapat menunjukkan performa perjalanannya dengan aman dan keluar dari jalurnya disebabkan karena gangguan mekanik pada rel seperti rel patah  dan komponen pendukung struktur jalan kereta api seperti penambat rel dan bantalan rel yang tidak berfungsi dengan baik. Anjloknya kereta api merupakan hal yang perlu dipertimbangkan dalam keselamatan perjalanan kereta api terlebih lagi jika kereta api tersebut membawa muatan barang berbahaya.  Penyebab dari rel patah dapat terjadi karena kelelahan material dari rel yang tidak terpantau ditambah dengan pembebanan berulang dari kereta api. Selain itu kejadian anjloknya kereta api pada rel juga dapat terjadi di area perlintasan sebidang antara jalan kereta api dan jalan raya dengan jarak pandang aman tersedia yang pendek. Dari beberapa peristiwa kereta api anjlok yang pernah terjadi di Indonesia umumnya disebabkan karena patah rel. Seperti peristiwa yang terjadi pada tanggal 26 Juli 2017 di KM 8+625 petak Wonokromo – Waru yakni anjloknya Kereta Api Bima (KA 43) rute Surabaya –Malang disebabkan oleh rel patah. Prosedur analisis anjloknya Kereta Api Bima ini dilakukan dengan perhitungan distribusi pembebanan pada stamformasi kereta api rencana, perhitungan nilai dumping factor (λ), perhitungan besar momen maksimum dan tegangan yang terjadi pada rel dan perhitungan besar momen dan tegangan yang terjadi pada bantalan rel. Dari hasil analisis diketahui bahwa penyebab anjloknya Kereta Api Bima adalah karena nilai tegangan hitung pada rel hampir mendekati nilai tegangan ijin rel (kritis), sehingga kondisi rel eksisting rawan terhadap kelelahan material (fatigue) lebih awal.
Analisis Faktor Tingkat Kepuasan Pelanggan Bus Patas Sugeng Rahayu Dengan Menggunakan Metode Customer Satisfication Index (CSI) Estikhamah, Fithri; Utomo, Nugroho
KERN : Jurnal Ilmiah Teknik Sipil Vol. 5 No. 2: Oktober 2019
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Pembangunan Nasional "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/kern.v5i2.15

Abstract

Dalam kondisi bisnis yang semakin ketat dalam berkompetisi, perusahaan otobus (PO) dituntut agar lebih kreatif dan inovatif dalam mencari ataupun mempertahankan konsumennya. Seperti PO.Sumber Group yang telah menyiapkan trayek PATAS dengan rute  JOGJA/SEMARANG – SOLO – SURABAYA melewati jalur Karangjati pada awal tahun 2015 lalu, dengan nama SUGENG RAHAYU by GOLDEN STAR. Masih berada dalam manajemen GOLDEN STAR dan masih satu bendera dengan SUMBER GROUP.  Berdasarkan hal itulah tujuan permasalahan dalam penelitian ini adalah untuk mengetahui berapa persen tingkat kepuasan pelanggan terhadap kinerja bus Patas Sugeng Rahayu. Dikarenakan sampel tidak terbatas maka diambil sampel sebanyak 100 responden. Dengan menggunakan kuesioner sebagai salah satu teknik pengumpulan data. Tehnik analisis yang digunakan adalah dengan menggunakan Customer Satisfication Index (CSI). Hal ini didasarkan pada lima dimensi kualitas pelayanan yaitu tangibles (bukti fisik), reliability, responsiveness, assurance dan empati. Dari hasil penelitian menunjukkan bahwa, kepuasan pelanggan secara keseluruhan memiliki nilai sebesar 78.5%, hal ini berarti bahwa para pengguna/pelanggan bus puas dengan pelayanan yang diberikan oleh bus Sugeng Rahayu. Meskipun hasil analisis menunjukkan nilai yang bagus tetapi perlu ada peningkatan kualitas layanan terutama kebersihan toilet di dalam bus.
Studi Kelayakan Tarif Baru Kereta Api Komuter Rute Surabaya – Bangil Nugraha, Fathurrahman Aditya; Utomo, Nugroho
KERN : Jurnal Ilmiah Teknik Sipil Vol. 10 No. 2: Oktober 2024
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Pembangunan Nasional "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/kern.v10i2.77

Abstract

Kereta api komuter rute Surabaya – Bangil merupakan kereta api yang dihadirkan oleh PT. KAI Daop 8 untuk meningkatkan pelayanan masyarakat terhadap transportasi umum menggunakan kereta api, hal itu membuat kelayakan tarif terhadap kereta api komuter rute Surabaya – Bangil perlu untuk ditinjau. Data yang dikelola pada penelitian ini berupa data primer (kuesioner kepada pengguna kereta api (KA) komuter rute Surabaya – Bangil) dan data sekunder (komponen biaya operasional kereta api (BOKA)). Metode yang dikelola pada penelitian ini adalah willingness to pay (WTP) dan importance performance analysis (IPA). Berdasarkan hasil analisis importance performance analysis (IPA) tingkat kesesuaian antara harapan penumpang dengan kinerja kualitas pelayanan PT KAI Daop 8 masih belum memuaskan harapan para penumpang karena pada kuadran 1 memiliki persentase sebesar 25%, dan pada kudran 3 memiliki persentase sebesar 31,25%.
Runway Pavement Design using the Federal Aviation Administration Method Yulfah, Gebi Aini; Sholichin, Ibnu; Utomo, Nugroho
CIVED Vol. 10 No. 3 (2023): September 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v10i3.27

Abstract

Dhoho International Airport is a new airport located in Kediri Regency, East Java Province, which is built on an area of + 454.5 hectares with a runway length of 3300 m and a width of 45 m. According to its hierarchy, Dhoho Kediri International Airport is a feeder airport (spoke). The B777-300ER aircraft is planned to operate at Dhoho International Airport with a plan life of 10 years which has a subgrade CBR value of 6%. The purpose of this research is to determine the thickness of flexible pavement on the runway of Dhoho Kediri International Airport using the FAA method. In determining the thickness of the runway flexible pavement using the FAA method is influenced by the number of annual departures of aircraft, the MTOW value of aircraft and the CBR value of the subgrade. To determine the annual number of aircraft departures at the new airport, it is necessary to forecast the number of passengers by considering the number of passengers at the nearest airport. Based on data analysis in this study, the total thickness of runway flexible pavement at Dhoho International Airport using FAA method is 102 cm with details of surface thickness of 13 cm, base course thickness of 56 cm, and subbase thickness of 33 cm.
Analysis of Accident Risk Points (Black Spots) on the Bubutan – Perak Barat Road Section Surabaya Arsyi, Radyan Hafidz; Utomo, Nugroho; Solichin, Ibnu
CIVED Vol. 11 No. 1 (2024): March 2024
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v11i1.554

Abstract

According to the traffic accident data from the Traffic Accident Unit of the Tanjung Perak Port Police and the Traffic Accident Unit of the Dukuh Pakis Police in Surabaya City in 2020-2022, traffic accidents that occurred on the Bubutan Road - West Perak Road section experienced an increase in the number of traffic accidents. The total details in 2021 were 13 incidents, in 2022 there was an increase to 17 incidents, besides that, the material losses incurred in 2022 had the highest figure, which amounted to IDR 46,000,000. So it is necessary to analyze the accident-prone points on the road section. The method used are AEK (Accident Equivalent Number), IPA (Importance Performance Analysis) method, and calculation of free flow speed, traffic volume analysis, and side obstacle analysis. Based on the analysis of accident-prone areas using the AEK method, it is known that the upper control limit value is 36.07 where Jalan Perak Barat has an AEK value above the BKA value in 2021 of 37, then in 2022 of 40. Jalan Perak Barat has an average traffic volume of 434.47 smp / hour, with a moderate level of side obstacles, but has a free flow speed that exceeds the planned speed. One of the factors causing traffic accidents on Jalan Perak Barat is the driver of a vehicle traveling at high speed, so rumble strip planning and road facility rejuvenation are recommended.
EVALUASI PELAYANAN DAN TARIF KERETA API LOGAWA METODE ABILITY TO PAY – WILLINGNESS TO PAY Pradana, Putri Amabel Carissa; Utomo, Nugroho; Alfiansyah, Achmad Dzulfiqar
axial : jurnal rekayasa dan manajemen konstruksi Volume 13, Nomor 2, Agustus Tahun 2025
Publisher : Universitas Wijaya Kusuma Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30742/axial.v13i2.4695

Abstract

Kereta Api Ekonomi Premium Logawa merupakan salah satu moda transportasi antarkota yang melayani rute Surabaya–Jember dengan tarif terjangkau dan pelayanan yang mendukung mobilitas masyarakat. Penelitian ini bertujuan untuk mengevaluasi pelayanan Kereta Api Ekonomi Premium Logawa berdasarkan Standar Pelayanan Minimum (SPM) perjalanan kereta api serta menganalisis kesesuaian tarif menggunakan metode Ability to Pay (ATP) dan Willingness to Pay (WTP). Pendekatan penelitian yang digunakan adalah kuantitatif deskriptif dengan teknik pengumpulan data melalui kuesioner kepada 150 responden penumpang. Metode Importance Performance Analysis (IPA) digunakan untuk mengukur kesesuaian antara kinerja dan harapan penumpang. Hasil penelitian menunjukkan bahwa mayoritas penumpang berjenis kelamin laki-laki (58persen), berusia 20-30 tahun (42,7persen), dan berstatus pelajar atau mahasiswa (31,3persen), dengan frekuensi perjalanan sebagian besar hanya 1-2 kali per bulan (82persen). Nilai rata-rata ATP penumpang adalah Rp345.378,00 sedangkan nilai rata-rata tambahan tarif WTP sebesar Rp9.267,00, menunjukkan tarif saat ini masih dapat dinaikkan dengan catatan peningkatan kualitas pelayanan. Nilai rata-rata tingkat kesesuaian pelayanan adalah 96,40persen. Berdasarkan analisis IPA, atribut prioritas utama peningkatan (kuadran I) meliputi kondisi pintu antar gerbong, CCTV, kenyamanan tempat duduk, fasilitas dan kebersihan toilet, serta fasilitas kereta makan. Sementara atribut yang kinerjanya perlu dipertahankan (kuadran II) adalah lampu penerangan, ketepatan waktu, rak bagasi, informasi perjalanan, sistem pembelian tiket, kaca film jendela, serta keberadaan nama/relasi dan nomor urut kereta. Penelitian ini menyimpulkan bahwa meskipun kemampuan membayar penumpang cukup tinggi, kesediaan untuk membayar lebih masih rendah apabila kualitas pelayanan tidak ditingkatkan.
Analisis Kinerja Simpang Bersinyal Dan Penanganan Dampak Kemacetan Pada Jalan Raya Jenggala – Jalan Raya Pahlawan Kecamatan Gedangan Dengan Metode PKJI 2023: Analysis Of Signalized Intersection Performance And Handling Of Congestion Impacts On Jenggala Road – Pahlawan Road, Gedangan Sub-District Using The PKJI Method 2023 Anggraeny, Efristka; Utomo, Nugroho; Alfiansyah, Dzulfiqar
Media Ilmiah Teknik Sipil Vol. 14 No. 1 (2026): Media Ilmiah Teknik Sipil
Publisher : ​Institute for Researches and Community Services Universitas Muhammadiyah Palangkaraya

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

Abstract

The Jenggala Highway – Pahlawan Highway intersection is located in an industrial warehouse area and adjacent to a railway crossing. This condition causes this intersection to have a high level of traffic activity and causes congestion. From these problems, the performance of this intersection has a saturation degree of 1.07 in the afternoon and an intersection delay of 54.87 seconds/SMP. Therefore, this intersection requires treatment to make the intersection performance more efficient. The treatment carried out was replacing the signal phase setting from initially 2 phases to 3 signal phases and East approaches are not allowed to turn left. So the saturation degree value after treatment was 0.75 in the afternoon and a decrease in intersection delay of 37.90. This saturation degree value has met the performance requirements for signalized intersections, which is less than 0.85 according to the handbook Indonesian Road Capacity (PKJI) 2023.
Evaluasi Kinerja Operasional pada Bus Trans Jatim Koridor V Rute Surabaya - Bangkalan Lutfiah, Yasmine Anisatul; Estikhamah, Fithri; Utomo, Nugroho
Jurnal Talenta Sipil Vol 9, No 1 (2026): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v9i1.1029

Abstract

Trans Jatim is a provincial bus-based public transport system initiated by the East Java Government to strengthen regional connectivity and alleviate traffic congestion, particularly within the Gerbangkertosusila metropolitan area. One of the newly introduced corridors, Corridor V, operates along the Surabaya–Bangkalan route via the Suramadu Bridge. This study aims to assess the operational performance of this corridor by focusing on three key indicators: load factor, travel time, and headway. A field survey with an observational approach was conducted to collect primary data directly from actual operations. The findings indicate that the average load factor reached only 42%, which falls short of the required minimum standard of 70%. In contrast, the average travel time of 118 minutes and headway of 20 minutes both meet the acceptable thresholds outlined in official technical guidelines. These results reveal that among the evaluated indicators, only the load factor fails to comply with the service standards. The insights from this research are expected to serve as a reference for enhancing the efficiency and service quality of the Trans Jatim Bus Corridor V in a more sustainable manner.
Pemodelan Nilai TQI Berbasis Ketebalan Ballast dan Parameter Geometri pada Jalur Rel 1435 mm Pratama, Mochammad Choirusydhia; Utomo, Nugroho; Alfiansyah, Achmad Dzulfiqar
Jurnal Talenta Sipil Vol 9, No 1 (2026): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v9i1.1105

Abstract

The Track Quality Index (TQI) is an essential indicator for evaluating the geometric quality of railway tracks. This study aims to analyze TQI values and predict their degradation based on geometric parameters and ballast thickness on the Makassar–Parepare railway line with a 1435 mm track gauge. The data used include track recording car measurements, ballast thickness, as well as traffic load and frequency. The analytical method employed is simple linear regression to determine the effect of ballast thickness on TQI. The results show that 66.66% of the track segments fall into the “Excellent” category. Furthermore, ballast thickness has a significant influence, with an R² value of 0.973, indicating that the thicker the ballast layer, the better the track quality. Long-term TQI prediction reveals an increase in TQI values over time due to ballast degradation, with the average value rising from 24.23 in the 5th year to 69.61 in the 25th year. These findings highlight the importance of periodic maintenance interventions based on TQI prediction to sustain the safety and comfort of railway operations.
Co-Authors Alfiansyah, Achmad Dzulfiqar Alfiansyah, Dzulfiqar Anggraeny, Efristka Arsyi, Radyan Hafidz Brouwer, Rifky Fadhiel Chaerania, Andini Dasion, Jimmy Jeremy Tandra Dian Purnamawati Solin ENGELBERT MANAROINSONG, ENGELBERT Fatikasari, Aulia Dewi Fithri Estikhamah Hafizha, Davin Ryan Hapsari, Maharanny Wahyu Harnan, Cahya Rafiyoga Hasanah, Fifi Nurlaili Hendrata Wibisana Ismail Maskromo Lutfiah, Yasmine Anisatul Ma'arif, M. Samsul Nugraha, Fathurrahman Aditya Pradana, Putri Amabel Carissa Pradhana, Adhitya Yudha Pratama, Irsyadul Ibad Pratama, Mochammad Choirusydhia Putra, Dewangga Andya Mahendra Putra, Dwi Setiawan RINDENGAN BARLINA, RINDENGAN Ririn Anggraini Rouf, Ahmad Yusuf Habibur Salsabila Kharidah Dhestanti Sholichin, Ibnu Siti Zainab, Siti Solichin, Ibnu Steivie Karouw Syahira, Khoirus Utami, Nevia Rizkyning Yulfah, Gebi Aini