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Online transportation services have become an important part of student life because they provide ease of access, time efficiency, and mobility flexibility. The Gojek application is one of the most frequently used services by students in Medan City to support academic and non-academic activities. This study aims to analyze students' experience in using the Gojek application and its effect on the effectiveness of the application in online transportation services. The research method used was a quantitative approach with survey techniques through a Likert scale questionnaire (1–5) to 50 students who were active users of Gojek. Data were analyzed using descriptive statistics and simple linear regression. The results showed that user experience (UX) was in the category of quite good with an average value of 3.58, while the effectiveness of the application was in the category of quite good with an average of 3.47. The reliability test showed Cronbach's Alpha values of 0.935 (UX) and 0.951 (Effectiveness), which means the instrument is very reliable. The results of the regression analysis showed that user experience had a positive and significant effect on the effectiveness of the application (β = 0.961; R² = 0.881; p < 0.001). Thus, the better the student experience in using the Gojek application, the higher the effectiveness felt in online transportation services. These findings confirm that improving the quality of user experience is a key factor to maintain and increase the effectiveness of online transportation applications among students.

Penelitian ini bertujuan untuk mengevaluasi implementasi Tingkat Komponen Dalam Negeri (TKDN) pada pekerjaan elektrikal proyek konstruksi bangunan gedung pemerintah di Indonesia. Metode yang digunakan adalah pendekatan kuantitatif deskriptif–evaluatif melalui studi kasus pada delapan lokasi proyek pemerintah. Evaluasi dilakukan terhadap capaian TKDN pada pekerjaan MVMDP, LVMDP, pemasangan kabel, pencahayaan, genset, trafo distribusi, dan biaya transportasi berdasarkan dokumen kontrak dan ketentuan regulasi yang berlaku. Hasil penelitian menunjukkan bahwa capaian TKDN antar proyek sangat bervariasi, dengan kecenderungan nilai TKDN rendah pada komponen berteknologi tinggi dan proyek di luar Pulau Jawa. Temuan ini mengindikasikan bahwa keterbatasan material lokal dan ketimpangan distribusi industri menjadi tantangan utama dalam implementasi TKDN. Penelitian ini memberikan kontribusi empiris dalam mengevaluasi kebijakan TKDN pada pekerjaan elektrikal serta menjadi dasar rekomendasi kebijakan peningkatan TKDN yang lebih terarah.

Kebutuhan akan angkutan umum berbasis rel berdampak luas terhadap pertumbuhan penduduk dan aktivitas ekonomi Jakarta. Penelitian ini bertujuan untuk membandingkan KRL Commuter Line dan MRT Jakarta dari dua aspek Kemampuan Membayar dan Kesediaan Membayar. Analisis ini dilakukan dengan pendekatan studi literatur deskriptif-komparatif. Jurnal, prosiding, tesis, dan dokumen kebijakan yang digunakan sebagai sumber sekunder melalui analisis konten. KRL dengan tarif dasar sebesar Rp. 3.000,- mendapatkan ATP Rp. 3.770,- – Rp. 4.825,- dan WTP Rp. 3.974,- – Rp. 5.057,-, yang berarti KRL berpotensi untuk perubahan tarif sebesar Rp. 770,-. MRT Jakarta untuk tarif sebesar Rp. 14.000,- untuk fase 2A, ATP menunjukkan daya beli Rp. 17.044,- dan WTP Rp. 19.000,-. Pola penumpang terikat muncul dan sangat bergantung, di sisi ujung, dengan WTP yang tinggi dan ATP yang rendah, untuk kedua moda, menandakan MRT dan KRL sangat efisien dan nyaman. Penelitian ini berpendapat agar penyesuaian tarif dilakukan dan untuk jangka panjang, tarif perlu diikuti dengan peningkatan mutu pelayanan dengan penyesuaian yang progresif dan sesuai dengan penghasilan bagi masyarakat berpendapatan menengah ke bawah, agar mutu pelayanan tidak berkualitas rendah.

Penelitian ini bertujuan untuk mengkaji dampak penutupan perlintasan kereta api Alastuo terhadap peningkatan volume kendaraan dan intensitas kebisingan di kawasan Fly Over Bangetayu, Kota Semarang. Fenomena ini mencerminkan tantangan tata kelola lalu lintas urban akibat perubahan infrastruktur transportasi. Dengan menggunakan pendekatan kualitatif deskriptif, studi ini dilakukan melalui metode studi kasus di lokasi terdampak. Data dikumpulkan melalui wawancara semi-terstruktur, observasi partisipatif, dokumentasi visual, serta pengukuran intensitas kebisingan menggunakan sound level meter pada sembilan titik waktu berbeda selama tiga hari pengamatan. Partisipan meliputi warga sekitar, pengguna jalan, dan petugas lalu lintas. Hasil analisis tematik menunjukkan adanya korelasi positif antara peningkatan volume kendaraan dan intensitas kebisingan, dengan nilai puncak kebisingan mencapai 93,6 dB pada sore hari. Temuan ini menegaskan bahwa perubahan rute akibat intervensi kebijakan infrastruktur dapat menyebabkan beban akustik yang signifikan di jalur alternatif. Penelitian ini memberikan kontribusi pada pemahaman tentang relasi spasial antara kebijakan lalu lintas dan degradasi lingkungan akustik. Implikasi teoretis mengarah pada integrasi studi kebisingan dalam perencanaan transportasi berkelanjutan, sementara implikasi praktis mencakup kebutuhan akan pengaturan lalu lintas yang adaptif serta mitigasi kebisingan melalui vegetasi, jalur alternatif, dan edukasi berkendara. Penelitian lanjutan disarankan melibatkan pendekatan interdisipliner untuk mengevaluasi dampak kebisingan terhadap kesehatan masyarakat secara langsung.

The rapid growth of online transportation services has significantly transformed urban mobility patterns, including in Abepura District, Jayapura City. This study is grounded in the concept of smart mobility, which emphasizes technological integration, efficiency, and accessibility within the smart city framework. The theoretical foundation draws on consumer preference theory and the Customer Satisfaction Index (CSI) model. A quantitative approach was applied through questionnaires distributed to 100 respondents, supported by secondary data on digital infrastructure and local transport regulations. The analytical methods included conjoint analysis to identify user preferences, CSI analysis to assess smart mobility readiness, and spatial analysis to map infrastructure support. The findings indicate that fare and safety are the most influential attributes shaping user preferences, followed by application usability, transport mode, and travel time. Maxim emerged as the most widely used application, followed by Grab and Gojek. The CSI score reached 77.60%, categorized as “highly ready,” though gaps remain in intermodal integration and waiting time efficiency. Spatial analysis confirmed that the coverage of 16 BTS towers in Abepura adequately supports online transportation operations. In conclusion, online transportation services in Abepura District demonstrate strong readiness to support the implementation of smart mobility, yet further improvements are needed in modal integration and operational efficiency to ensure sustainable and inclusive urban mobility.

The need for environmentally friendly marine transportation continues to increase, especially in tourist areas such as Penyengat Island, Tanjungpinang, Riau Islands. In the local context, the design of electric boats has not been widely developed for small islands in Indonesia, even though the potential and urgency for its application is very high. Geographical constraints, limited charging infrastructure, and a lack of technical data are the main obstacles. This research focuses on the design and construction of an electric-powered tourist boat prototype with an asymmetrical catamaran hull type as an effort to support a sustainable transportation system. The boat design applies an asymmetrical catamaran hull configuration to improve sailing stability and energy efficiency. The propulsion system is controlled via a wireless PS2 joystick integrated with an ESP32 microcontroller, supported by a 24V DC motor powered by lithium-ion batteries and solar panels as a supplement. Test results show that the boat can operate stably with remote control, good energy efficiency, and zero emissions during operation. Some technical challenges encountered include limited operational duration due to battery capacity and high sensitivity of electronic components to water exposure. Overall, this prototype has great potential for further development as an environmentally friendly alternative for maritime transportation system. The stable catamaran hull design provides advantages in terms of comfort and safety, especially in calm or shallow waters. The electric propulsion system used has proven to be efficient and responsive, supported by a remote control mechanism that is easy to operate via a wireless joystick

This study aimed to evaluate the effect of post-larvae (PL) 12 density of whiteleg shrimp (Litopenaeus vannamei) on survival during transportation using a closed wet system. The study was conducted experimentally using four different density treatments: 500, 750, 1000, and 1250 shrimp per liter of water. The purpose of these density variations was to identify the optimal density level that still ensured a high survival rate during transportation. The results showed that shrimp seed density significantly influenced survival. A density of 500 shrimp/liter resulted in the highest survival rate of 99.6%, while a density of 1250 shrimp/liter showed the lowest survival rate of 99.30%. Although the differences in numbers appear small, the ANOVA statistical test showed that the differences between the treatments were significant. These results were reinforced by a further LSD (Least Significant Difference) test, which confirmed significant differences between treatment groups. In addition, water quality parameters such as dissolved oxygen, temperature, and pH were also observed during transportation. Measurement results showed that dissolved oxygen and temperature changed significantly with increasing seed density. However, pH did not show any significant differences between treatments. Overall, the results of this study indicate that shrimp seed density and water quality parameters are important factors to consider in the shrimp fry transportation system. Appropriate density management can minimize stress and mortality, and ensure seed survival during the distribution process.

Kota Padang merupakan salah satu kota yang ada di Provinsi Sumatera Barat dan juga merupakan ibu kota dari Provinsi Sumatera Barat yang saat ini memiliki perkembangan di berbagai bidang seperti bidang ekonomi, transportasi dan perkembangan infrastruktur kota itu sendiri. Akibat perkembangan penduduk dan transportasi maka akan membutuhkan angkutan umum sebagai penunjang perkembangan tersebut. Tujuan dari pelaksanaan penelitian ini adalah untuk mendapatkan data kinerja pelayanan angkutan sebagai bahan evaluasi dalam penataan angkutan umum di Kota Padang. Hasil dari penelitian ini yaitu Frekuensi tertinggi terdapat pada trayek 419 yaitu 39 Kend/jam sedangkan frekuensi terendah adalah sebesar 1 kend/jam yaitu pada trayek 404, 411, 412, 423, 444,445, 410A, dan 444B. Headway tertinggi yaitu pada trayek 404 dengan headway 596 menit, sedangkan headway terendah terdapat pada trayek 419 dengan headway 2 menit.Load factor tertinggi terdapat pada trayek 434 yaitu sebesar 56,17%  sedangkan load factor terendah terdapat pada trayek 423 yaitu sebesar 9,09%. Tingkat operasi tertinggi terdapat pada trayek 54, dengan nilai tingkat operasi sebesar 100%, kemudian tingkat operasi terendah terdapat pada trayek 423 dengan nilai tingkat operasi sebesar 2,44%

Persimpangan jalan merupakan titik pertemuan pada jaringan transportasi di mana dua atau lebih ruas jalan bertemu, yang dapat menimbulkan konflik arus kendaraan. Kondisi lalu lintas sangat mempengaruhi kinerja jalan, terutama pada persimpangan. Tujuan penelitian ini adalah untuk menganalisis kinerja Simpang Tiga Yogya Mall Kota Tegal melalui evaluasi lalu lintas dan simulasi, dengan memberikan rekomendasi untuk meningkatkan efisiensi dan mengurangi kemacetan. Metode yang digunakan meliputi survei lapangan untuk mengumpulkan data volume arus kendaraan dan geometrik jalan, serta perhitungan kapasitas jalan menggunakan metode PKJI 2023. Simulasi dilakukan dengan aplikasi Vissim, dengan kalibrasi dan validasi parameter perilaku pengemudi untuk mendekati kondisi aktual. Hasil penelitian menunjukkan bahwa kinerja simpang pada kondisi eksisting sesuai dengan standar PKJI 2023 memiliki tingkat pelayanan D dengan derajat kejenuhan (DJ) rata-rata 0,81 dan tundaan rata-rata 38,66 detik per kendaraan. Hasil simulasi menunjukkan peningkatan ke tingkat pelayanan C dengan tundaan yang lebih rendah (28,84 detik). Implikasi dari hasil penelitian ini adalah rekomendasi untuk mengoptimalkan arus lalu lintas di simpang tersebut melalui penerapan pengaturan sinyal yang lebih efisien dan penyesuaian geometrik simpang, sehingga dapat meningkatkan efisiensi dan mengurangi kemacetan di Simpang Tiga Yogya Mall Kota Tegal

This study examines the application of transportation problems in an effort to minimize goods transportation costs in various factories in Indonesia, using a Systematic Literature Review (SLR) approach. Transportation problems, as a part of operations research, focus on optimizing distribution costs from sources to destinations. In the industrial context, good planning and strategy are essential to save transportation costs and increase profits. This study analyzes ten relevant journals published between 2017 and 2025, exploring various methods such as the transportation model, North West Corner, Stepping Stone, and Vogel's Approximation Method (VAM), including its modification (MVAM), to achieve efficiency in logistics distribution. The results of the study indicate that the application of these methods significantly contributes to reducing operational costs, accelerating distribution processes, and increasing overall logistics effectiveness in the Indonesian manufacturing sector.

This study aims to examine and describe the extent to which the optimization of public services in the transportation sector is implemented by the Gorontalo Regency Transportation Agency. The approach used is qualitative research with descriptive methods, in order to deeply understand the practices of transportation policies at the regional level. Data collection techniques were carried out through in-depth interviews, participatory observation, and documentation of the activities and policies implemented. The results of the study indicate that the optimization of public services in the transportation sector has been taking place progressively based on three main indicators. First, service effectiveness is reflected in the implementation of regulations in accordance with the law, such as controlling private vehicles parked haphazardly to reduce congestion and routine inspections of public vehicles to ensure safety aspects. Second, efficiency is achieved through technical supervision of vehicles that are not roadworthy, including brake conditions, tire wear, and completeness of route permits, as part of efforts to reduce operational risks and improve service quality. Third, productivity increases through the use of digital technology in socialization activities and the provision of supporting infrastructure such as bus stops, terminals, adequate roads, and traffic signs. These findings indicate that the Gorontalo Regency Transportation Agency has implemented a transportation service optimization strategy that is adaptive and oriented to community needs.

The purpose of this study is to determine how the financial performance (Y) of transportation and logistics companies listed on the Indonesia Stock Exchange during the 2020-2023 period correlates with liquidity (X1) and solvency (X2) ratios. This research utilizes multiple linear analysis methods with secondary data and SPSS tools. The population consists of 37 companies, with 10 companies as research samples. The analysis results show that the liquidity ratio (X1) does not significantly affect the financial performance (Y) of transportation and logistics companies listed on the Indonesia Stock Exchange; the t-test probability value for this ratio is 0.078, greater than 0.05. In the same way, the t-test for the solvency ratio found a probability value of 0.259, which is also greater than 0.05, indicating that the solvency ratio also does not affect financial performance (Y). On the other hand, the f test value is 0.141, which is also greater than 0.05. Overall, the financial performance (Y) of transportation and logistics companies listed on the Indonesia Stock Exchange is not significantly affected by the liquidity ratio (X1) and solvency ratio (X2) variables. From these results, it can be concluded that only ten percent of financial performance is influenced by solvency and liquidity ratios. Other factors not considered in this study affect the other ninety percent.

In the maritime transportation industry, companies face challenges in minimizing operational costs while maximizing customer satisfaction. PT XYZ, as one of the leading maritime transportation companies, needs to adopt effective strategies to achieve these objectives. This study aims to identify cost-efficiency methods that can be implemented and analyze the impact of costs on customer satisfaction. By using relevant data and case studies, this research is expected to provide in-depth insights for PT XYZ's management in making strategic decisions.

An environmentally friendly fuel with great potential for use in transportation and industry is B40 biodiesel. It is a mixture of 60% diesel and 40% biodiesel. With an emphasis on engine performance, environmental impact, and financial incentives, the study assesses how beneficial its use can be. According to the findings, B40 biodiesel burns better and produces fewer carbon emissions compared to pure diesel because it has a higher cetane number. However, fuel consumption may increase due to the much lower energy content of biodiesel. B40 requires more maintenance to avoid hygroscopic effects, but it has been shown to improve lubrication and support heavy equipment operations in industrial environments. Implementing B40 has several benefits, including the ability to reduce greenhouse gas emissions.

The web-based land transportation management system is a modern solution for managing transportation operations by utilizing web technology to facilitate monitoring, scheduling, and optimization of fleet usage. This study aims to analyze the strengths, weaknesses, opportunities, and threats in the implementation of a web-based land transportation management system using SWOT analysis. The results of this study are expected to serve as a guide for companies or transportation management agencies in designing and developing efficient and effective systems. Although there are several challenges, such as dependency on stable internet infrastructure and relatively high implementation costs, the potential benefits, such as increased operational efficiency, cost reduction, and improved customer service quality, make this system highly relevant and have strong prospects for application in the land transportation industry.

ABSTRAK Indonesia sebagai negara kepulauan sangat bergantung pada transportasi kapal laut untuk menghubungkan antar pulau. Pada proses perencanaan konstruksi kapal, pemilihan material lambung yang terbaik sangat penting untuk menghadapi masalah korosi. Paduan aluminium dikenal memiliki ketahanan korosi yang baik, sehingga sering dipilih untuk aplikasi di lingkungan korosif, seperti laut. Paduan seri 5xxx, khususnya Aluminium 5083 dan 5052, umum digunakan dalam industri pembuatan kapal karena karakteristik mekanis dan ketahanan korosinya. Lingkungan laut yang agresif dapat mempercepat laju korosi, mengancam integritas struktural lambung kapal. Berdasarkan hal tersebut, diperlukan pemahaman komparatif tentang perilaku kedua paduan ini dalam kondisi korosif seperti air laut. Penelitian ini bertujuan untuk membandingkan laju korosi aluminium 5083 dan 5052 dalam media air laut, dengan fokus pada faktor-faktor yang mempengaruhi korosi serta implikasinya terhadap pemilihan material lambung kapal dengan metode kehilangan berat (Weight Loss) sesuai dengan ketentuan dari ASTM G31-72. Penelitian ini menggunakan desain eksperimen dengan pengujian perendaman kedua jenis aluminium dalam air laut selama beberapa periode waktu (168 hingga 720 jam). Penelitian ini membandingkan laju korosi aluminium 5083 dan 5052 dalam media air laut selama periode waktu tertentu. Hasilnya menunjukkan bahwa aluminium 5083 memiliki laju korosi yang lebih rendah dibandingkan aluminium 5052 pada semua durasi perendaman. Analisis struktur mikro juga menunjukkan distribusi partikel magnesium yang lebih merata pada aluminium 5083, yang memberikan ketahanan korosi yang lebih baik. Penelitian ini menunjukkan aluminium 5083 memiliki ketahanan korosi yang lebih baik dibandingkan aluminium 5052 dalam media air laut, dengan laju korosi yang lebih rendah dan distribusi partikel magnesium yang lebih merata.

Persimpangan merupakan simpul dalam jaringan transportasi dimana duaatau lebih ruas jalan bertemu dan pada simpang inilah terdapat potensi konflik lalulintas yang mungkin akan terjadi. Terutama pada simpang empat bersinyal Hangtuah kota Tegal, dimana salah satu upaya untuk mengurangi konflik lalu lintas dengan melakukan pengaturan ulang waktu siklus dan fase pada simpang. Simpang diberi pengaturan APILL bertujuan untuk menghindari terjadinya konflik lalu lintas sehingga dapat meningkatkan keselamatan, dan sebagai upaya untuk mempertahankan kapasitas jalan. Metode yang digunakan dalam analisis kinerja simpang adalah menggunakan  perhitungan menggunakan MKJI dan software PTV VISSIM.Sedangkan untuk analisis konflik lalu lintas dengan melakukan pengamatan langsung dan dibandingkan dengan software SSAM untuk mengetahui jumlah konflik yang terjadi. Langkah selanjutnya yaitu dengan memberikan rekomendasi penanganan dari permasalahan konflik lalu lintas dengan menggunakan softwarePTV VISSIM.

The study aims to analyze the amount of carbon monoxide pollutants produced from transportation activities and per unit of vehicle on Taruna Bhakti Street – Kamwolker Perumnas III Street, to model carbon monoxide and determine the factors that influence the amount of carbon monoxide pollutants. Data processing using IBM SPSS 25 application with multiple linear regression analysis method. The average amount of CO pollutants obtained testing at the location point is 25.6 ppm or 29,296.17 μg/Nm³. And the amount of CO emissions per vehicle unit for motorcycles amounted to 725.45 ppm, gasoline cars amounted to 603.90 ppm, and diesel cars amounted to 708.57 ppm.  The model obtained for testing  location point 1, Y = 53,294 + 0,008 X₁ - 13,482 X₂ - 0,432 X₃ - 0,141 X₄ for location point 2 Y = 17,025 + 00,007 X₁ - 7,264 X₂ - 0,087 X₃ - 0,078X₄. And per unit of vehicles for motorcycles Y = 893,474 + 13,421X₁ - 0,447X₂ -76,970X₃, for gasoline cars Y = 603,320 + 14,862X₁ + 0,146X₂ - 97,282X₃ and for diesel cars Y = 385,146 + 23,483X₁ + 0,131X₂ - 73,392X₃. Factors that affect testing at the location point are the number of vehicles (X₁) and wind speed (X₂). For motorcycle vehicles, the vehicle maintenance factor (X₃), gasoline cars are the age of the vehicle factor (X₁), and diesel cars are the vehicle age factor (X₁).

This research aims to determine whether there is an influence between company size, liquidity, debt policy and tax planning on company value partially and simultaneously in transportation companies listed on the BEI for the 2020-2023 period. This research uses a quantitative causal comparative method. The sample in this research used a purposive sampling method and obtained 13 companies. This research uses secondary data. The analysis technique in this research uses multiple linear regression analysis techniques. The results of this study show that company size, liquidity and debt policy partially have a significant effect on company value, while tax planning partially has no significant effect on company value. Simultaneously company size. liquidity, debt policy and tax planning have a significant effect on company value.

Kajian literatur sistematis ini bertujuan untuk mengeksplorasi praktik pengelolaan dan operasional dalam perusahaan transportasi. Penelitian ini menelaah berbagai metodologi yang digunakan dalam studi-studi sebelumnya, mengevaluasi efektivitasnya, dan mengidentifikasi tren dan tantangan umum. Dengan menganalisis secara sistematis 30 jurnal yang relevan, penelitian ini bertujuan untuk memberikan gambaran menyeluruh tentang kondisi terkini pengelolaan dan operasional di sektor transportasi. Temuan penelitian menyoroti strategi-strategi penting yang telah berhasil, serta area yang memerlukan peningkatan lebih lanjut. Implikasi dari penelitian ini sangat penting untuk pemahaman akademis dan aplikasi praktis dalam meningkatkan kinerja perusahaan transportasi.