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Strategies to Improve Public Transportation Services for Students of The University of Bengkulu Zia Felina; Melawaty Agustien; Edi Kadarsa
Eduvest - Journal of Universal Studies Vol. 5 No. 4 (2025): Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v5i4.51109

Abstract

The choice of transportation mode is a crucial aspect of student mobility, especially in higher education environments with high levels of activity. Students tend to select transportation modes based on cost, travel time, convenience, accessibility, and safety. However, the high use of private vehicles among students has led to increased traffic congestion and road accidents, as seen in Bengkulu City. On the other hand, the suboptimal quality of public transportation services has contributed to the low interest of students in using public transport. This study aims to analyze the factors influencing the transportation mode choice of Universitas Bengkulu students and to evaluate the effectiveness of public transportation services. The method used is binary logistic regression analysis combined with stated preference to understand mode preferences based on cost and travel time comparisons. The resulting mode choice model indicates that students prefer private vehicles unless public transportation offers more competitive costs and travel times. The study results reveal that travel cost and time are the most influential factors in mode selection. If public transportation becomes more affordable or offers shorter travel times, students are more likely to switch to it. The study concludes that improving the quality of public transportation services, particularly in terms of cost efficiency and punctuality, can increase student interest in using public transport, thereby supporting a more sustainable transportation system.
Runway Strength Analysis Using ACR-PCR at Sultan Mahmud Badaruddin II Airport Ria Maya Sari; Melawaty Agustien; Rhaptyalyani Herno Della; Sukahir
Langit Biru: Jurnal Ilmiah Aviasi Vol 18 No 3 (2025): Langit Biru: Jurnal Ilmiah Aviasi
Publisher : Politeknik Penerbangan Indonesia Curug

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54147/langitbiru.v18i3.1492

Abstract

Aircraft Classification Rating-Pavement Classification Rating (ACR-PCR) is a system to determine the PCR value of runway pavement strength and recommended for runway maintenance issued by International Civil Aviation Organization (ICAO) based on ICAO Advisory Circular (AC) 150/5335-5D of 2022, as a replacement for the Aircraft Classification Number - Pavement Classification Number (ACN-PCN) system that has been used since 1980. The implementation of the ACR-PCR Method is determining the strength value of runway pavement can be used as a reference in holding the load of aircraft that have a lower or the same ACR value. The ACR-PCR system was published in order to plan a more rational pavement structure strength by analyzing the response of the pavement structure to the weight of aircraft movement on the runway. The calculation was carried out using the modulus of elasticity of each layer on the runway pavement structure with a more specific type of material. Sultan Mahmud Badaruddin (SMB) II Airport is one of the airports in Indonesia that is currently in the process of transitioning using the ACN-PCN system to ACR-PCR system for runway strength reporting. Base on data of aircraft movement at SMB II airport management in 2024 and calculated by using FAARFIELD 2.1 software, PCR value for the critical runway strength of SMB II Airport was 890 F/C/X/T with a critical aircraft is Boeing B747-400.
The Effect of Addition LDPE Plastic on Porous Asphalt Mixture Muhammad Yodhi Saputra; Melawaty Agustien; Edi Kadarsa
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol. 8 No. 1 (2023): EDISI MARET 2023
Publisher : UNITRI PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v8i1.4607

Abstract

Many recent studies have used plastic waste as an ingredient in conventional asphalt mixtures. However, they did not notice that the addition of plastics can reduce the permeability of asphalt mixtures, which means that porous asphalt is a better plastic trash that will be added to a specific type of asphalt mixture. Despite having a low marshall value, porous asphalt provides a benefit in terms of permeability. Low-density polyethylene (LDPE), a form of plastic trash employed in this study, boosted the Marshall stability mark. This study changed porous asphalt by adding LDPE plastic for usage on the field, then tested for marshall stability and permeability. A porous asphalt mixture should be created as a result of this study's findings with the highest percentage of plastic content without reducing its permeability classification, considering the percentage of plastic used. It is equally essential, and evaluating the wheel tracking machine will help gather more information about its resistance to deformation. The permeability test of porous asphalt with the addition of plastic at 0%, 5%, 10%, 15%, and 20%, respectively, produced findings that were 0.2002 cm/s, 0.1507 cm/s, 0.1131 cm/s, and 0.0897 cm/s. The results of the Marshall stability check on porous asphalt with the percentage of added plastic starting from 0, 5, 10, 15, and 20 percent show values of 571.52 kilograms, 716.9067 kilograms, 731.9467 kilograms, 817.1733 kilograms, and 912 .4267 kilograms. In the wheel tracking machine test, it works well for dynamic stability values at a plastic percentage of 20%, or 7159.091 passes/mm.ABSTRAKBanyak penelitian telah menggunakan limbah plastik sebagai bahan campuran aspal konvensional beberapa tahun terakhir. Namun, mereka tidak memperhatikan bahwa plastik dapat mengecilkan permeabilitas campuran aspal, yang berarti aspal berpori adalah jenis campuran aspal yang lebih baik untuk dicampur dengan sampah plastik. Meskipun aspal berpori memiliki nilai marshall yang rendah, namun aspal jenis ini memiliki keunggulan pada permeabilitasnya. Dalam penelitian ini limbah plastik yang digunakan adalah jenis LDPE (low density polyethylene), yang mana terbukti memberikan peningkatan terhadap nilai stabilitas marshall. Penelitian ini mengubah aspal berpori dengan menambahkan plastik LDPE agar dapat digunakan di lapangan, kemudian dilakukan pengujian stabilitas marshall dan permeabilitas, Hasil penelitian ini diharapkan akan menghasilkan campuran aspal berpori dengan persentase kadar plastik tertinggi tanpa mengurangi klasifikasi permeabilitasnya dengan memperhitungkan persentase plastik yang digunakan. Hal yang tidak kalah penting, dibutuhkan data tambahan tentang ketahanan deformasinya melalui pengujian whell tracking machine. Dari hasil pengujian yang dilakukan, Dengan persentase penambahan plastik pada 0, 5, 10, 15, dan 20 berturut-turut, permeabilitas aspal berpori mencapai 0,2002 cm/s, 0,1640 cm/s, 0,1507 cm/s, dan 0,1131 cm/s, dan 0,0897 cm/s. Hasil dari pemeriksaan stabilitas Marshall pada aspal berpori dengan besaran persentase penambahan plastik mulai dari 0, 5, 10, 15, dan 20 persen menunjukkan nilai 571,52 kilogram, 716,9067 kilogram, 731,9467 kilogram, 817,1733 kilogram, dan 912,4267 kilogram. Untuk nilai stabilitas dinamis pada pengujian whell tracking machine memberikan hasil yang baik pada persentase plastik 20% yaitu sebesar 7159,091 lintasan/mm.