Kelelahan (fatique) berakibat kepada pengurangan kapasitas kerja dan ketahanan tubuh. Kelelahan adalah proses menurunnya efisiensi, performansi kerja dan berkurangnya kekuatan atau ketahanan fisik tubuh untuk terus melanjutkan kegiatan yang harus dilakukan. Faktor lingkungan seperti suhu, kebisingan, pencahayaan, dan ventilasi akan berpengaruh terhadap kenyamanan fisik, sikap mental, dan kelelahan kerja. PT XYZ adalah suatu perusahaan yang bergerak dibidang penambangan bahan galian golongan C yaitu berupa batuan andesit. Pada pengoperasiannya perusahaan melakukan aktifitas pada lingkungan terbuka dan berbahaya. Operator harus bekerja dalam kondisi temperatur, kelembaban udara, dan kebisingan tinggi pada siang hari. Penelitian ini bertujuan menghitung tingkat kelelahan yang terjadi di pada operator PT XYZ pada divisi penghancuran batu menjadi batu yang lebih kecil atau pasir dan menganalisa pengaruh lingkungan fisk kerja terhadap peningkatan kelelahan pada operator. Metode IFRC digunakan untuk menilai kelelahan yang dirasakan operator. Lingkungan fisik yang diamati dan diduga mempengaruhi kelelahan dalam produksi adalah adalah temperatur, kelembaban, kebisingan, dan pencahayaan. Besar kelelahan di plant A2 secara umum pada kondisi pra-kerja sebesar 71,71 dengan kategori kelelahan sedang dan kelelahan pada kondisi pasca-kerja I didapatkan sebesar 75,71 dengan kategori kelelahan sedang, dan kelelahan ada kondisi pasca-kerja II sebesar 71,43 dengan kategori kelelahan sedang. Kondisi lingkungan fisik kerja yang melebihi ambang batas adalah temperatur dan kebisingan. Peningkatan temperatur kerja dan kebisingan dari kondisi pagi hari (pra-kerja) ke siang hari (pasca-kerja II) tidak signifikan meningkatkan kelelahan.

In general, the manufacturing industry relies more on machine-based processes. However, in certain activities, human labor is still needed due to the limitations of the machine function, as humans are faster than the machine. However, the activities using human muscle power are at risk of postural stress and early work fatigue. Work fatigue will affect work performance and productivity. The Standard Operating Procedures (SOP), which do not consider work attitude, will result in inconvenience at work and complaints on body parts and decreased performance. Besides, it also causes the inability to meet production targets so that employees cannot reach the maximum wage, and the company suffers losses. The redesign of the Standard Operating Procedures (SOP) is needed to make people as the center of all improvement activities. The design used in this study was treatment by subject design. The results showed that there were differences (p <0.05) between pre- and post-intervention results, Decreased postural stress complaints (moment of compressive force) in posture 1 (7.31%), posture 2 (23.09%), and posture 3 (4.74%). In comparison, the reduction of work fatigue was obtained from 81.26±10.85 to 70.87±3.68 (12.78%). After the implementation of ergonomic-based SOPs, there was an increase in employee income by 25.23% or (IDR 2,068,091/month) and an increase in company profits (IDR 51,702,286/month). The implementation of ergonomic-based SOPs was able to reduce postural stress, fatigue, and to increase employee income and company profits.

Development of cities in Indonesia is along with increasing of community mobility that traveling from the surrounding district (hinterland) to the central city and its reverse. However dominanly city in Indonesia haven’t mass transport system. Unavailability of mass transport facilities also have taken place in Cilegon, one of industial city in Indonesia. The ratio of the use of public transport and private transport vehicles in Cilegon was 1:90. Bus Rapid Transit (BRT) was one alternative to serve good public transport. This research aims were look at factors that affect the success of the BRT application, and analyzing important factors that support BRT implementation. The approach on technology transfer was used in determining the characteristics of the transferor and transferee in supporting the implementation of mass transportation. Three parties involved in the transfer of technology in the BRT system were goverment, operator, and the community. This study procured there were nine factors supporting the implementation of Bus Rapid Transit (BRT) System, they were transferor readiness, basic capabilities and adaptation to the mass transport system, transferee readiness, supporting regulations and policies, cooperation in the supervision and services development, counceling and community management, culture, confidence level, and local sub contract. Nine construct factors represented the data in terms of variance explained (61.802%). The transferor readiness was the main factor with percentage of explanation was 25.987%. The main role in technology transfer in BRT system was hold by the Government as a manager that playing role in achievement of targets 46.89%.

Human error is an insistety action that can reduce the effectiveness, safety, and performance of a system. Human error can be caused by unsafe acts that are the type of errors committed by the subject of the perpetrator due to errors or violations of procedures. This study aims to identify human error in driving based on the type of deviation that is often done by the driver and analyze the influence of age and gender on traffic irregularities. Data collection using Driver Behavior Questionaire (DBQ). There were 325 respondents who filled out the questionnaire, 72.31% of male and 27.69% of female respondents with an age range between 18 to 65 years. The questions in the questionnaire were compiled based on the group of deviations made by the driver, there are four types of wrong habits in driving, namely errors, lapse, violations, violation, and aggresive violations. Lapse is an error that frequent committed by the driver. The adolescent group committed higher offences than the adult and middle age groups for all types of traffic irregularities. The male were significantly more likely to commit violation (a=0.00) and aggresive violations (a=0.014) than female. Both types of violations conscious committed by the driver to achieve a specific goal.