Traffic accidents are the main indicator of road safety levels. There were 2,225 traffic accidents throughout 2019 in Lampung Province with 724 deaths, 1240 seriously injured, and 2015 minor injuries. The research was conducted to the identification of the black site and black spot in Lampung Province. The method used in this research is the EAN, Z-score, Frequency of accidents method calculates accident-prone areas to get the value of the accident location (Black Site) and the Cumulative Summary method to identify the black spot. The results showed from 93 roads, there is 1 road which is the highest black link of each road status. The accident-prone area (black site) is Jalan Lintas Tengah Sumatra and accident-prone points (black spot) at KM 18-26 are influenced by land use, road geometric, and traffic signs.

Penelitian ini bertujuan untuk mengetahui pengaruh stres akademik dan mindful attention terhadap tekanan psikologis pada mahasiswa tingkat akhir di Jakarta. Desain survei cross-sectional digunakan untuk mengumpulkan data dari 200 mahasiswa tahun terakhir di Jakarta, dan komponen kualitatif dimasukkan untuk mendapatkan wawasan mendalam tentang pengalaman siswa dengan stres akademik dan tekanan psikologis. Hasilnya menunjukkan korelasi positif yang signifikan antara stres akademik dan tekanan psikologis, serta korelasi negatif yang signifikan antara stres akademik dan perhatian penuh perhatian. Data kualitatif menunjukkan bahwa faktor budaya dan sosial dapat berkontribusi terhadap stres akademik dan tekanan psikologis di kalangan mahasiswa di Jakarta. Temuan penelitian ini memiliki implikasi penting untuk desain intervensi yang ditujukan untuk mempromosikan kesejahteraan psikologis dan kinerja akademik mahasiswa di Jakarta, termasuk pelatihan manajemen stres, layanan konseling, dan intervensi berbasis mindfulness. Studi ini menekankan pentingnya mempertimbangkan faktor budaya dan sosial dalam desain intervensi yang bertujuan untuk mempromosikan kesejahteraan psikologis mahasiswa di Jakarta.

Social Marketing adalah penerapan prinsip dan teknik pemasaran pada upaya-upaya melakukan perubahan sosial yang positif, misalnya kampanye bahaya merokok, peningkatan partisipasi masyarakat dalam program keluarga berencana (KB), penyadaran masyarakat untuk tidak membuang sampah di sungai, dan penggunaan kondom untuk hubungan seks yang aman. Tujuan dari diterapkan social marketing atau pengabdian ini adalah tidak untuk menghasilkan keuntungan tapi untuk mencapai tujuan dan kesuksesan sosial. Metode pelaksanaan pengabdian ini dilakukan dengan survei dan observasi. Adapun hasil dari pengabdian ini yaitu kita dapat mengetahui jika suatu promosi sangat penting dilakukan terutama pada UMKM di era digital. Kegiatan yang kami lakukan untuk mengembangkan usaha UMKM tersebut yaitu dengan mendaftarkan UMKM ini kepada e-commers pesan antar, membuat brosur untuk promosi, memasang baliho, membuatkan daftar menu, membuatkan logo usaha dan juga dengan membantu dalam mempromosikannya.

Tire pressure requirements may vary for different vehicles depending on factors such as the brand, load, and tire type. Inadequate tire pressure can result in suboptimal braking performance. This study aims to examine the impact of tire pressure variations on the efficiency of the main brake and parking brake in vehicles. The brake tester was utilized to conduct experiments on pickup goods vehicles with a GVWR less than 3,500 kg. The findings reveal that tire pressure has a significant influence on the efficiency of the main brake and parking brake. Higher tire pressure corresponds to lower efficiency values for both brakes, while lower tire pressure yields higher efficiency values. It is crucial to raise awareness among vehicle owners about the importance of maintaining proper tire pressure as it directly impacts braking performance and overall vehicle safety.

In this research, a machine learning approach, especially a decision tree model, is implemented to improve the analysis and visualization of weighbridge data in Indonesia. The evaluation results show that the decision tree model provides better insight in predicting the carrying capacity, dimensions and loading procedures of vehicles. The advantage of this model lies in its combination of low Mean Squared Error (MSE) and high R-squared, indicating its effectiveness in capturing data variance and providing accurate predictions. The use of decision tree models can be a valuable tool in improving the visualization of bridge weighing data, allowing users to gain additional insights and understand the complex dynamics within the data. In addition, the model's adaptability to various types of data makes it a versatile analysis tool. The positive implications of using this model open up opportunities to understand more deeply the logic of predictions and make more informed decisions. As a suggestion, increasing the number and quality of weighing equipment, wider application of information and communication technology, human resource training, and cross-sector collaboration can further strengthen weighbridge management in Indonesia.

The vehicle braking system is critical for ensuring road safety, particularly under high-temperature conditions caused by friction during braking. Thermal stress in braking components leads to the degradation of friction materials, reducing braking efficiency and overall performance. Situations involving frequent or intense braking, such as on steep descents or at high speeds, elevate brake temperatures, decrease the friction coefficient, and result in longer stopping distances. Approximately 30% of accidents are linked to brake-related issues, with thermal effects being a major contributing factor. This study aimed to evaluate the impact of temperature on braking efficiency by analyzing performance at four operational temperatures: 30 °C, 100 °C, 150 °C, and 200 °C. Descriptive statistics summarized the data, while inferential analyses using ANOVA assessed the effects of temperature on braking performance. The findings showed a significant decline in efficiency, dropping from 75% at 30 °C to 35% at 200 °C, with a notable reduction observed between 100 °C and 150 °C. Box plot analysis highlighted consistent trends across temperature categories, and chi-square tests confirmed a significant relationship between elevated temperatures and decreased efficiency. These results emphasize the need for advanced brake materials and cooling mechanisms to improve thermal resilience. Future research should explore alternative materials, such as composites, and innovative cooling strategies to enhance braking performance under extreme conditions.