| Summary: | ABSTRACT
Semarang-Yogyakarta intercity-interprovince bus drivers work 12 - 16 hours daily. They work in an environment that has a risk factors associated with work related disorders, such as whole body vibration. Measurements show that the bus seat vibration was 2.0 m/sec2 when the bus runs at the speed of 60 - 80 km/hours. The aim of this study was to know the effect of the length of working experience, working time and seat vibration to the work fatigue of the bus driver.
This study was retrospective. The sample of this study was 25 bus drivers of PO Santoso and PO Trisakti A Magelang. The sample was divided into two groups according to the length of working experience, working time and also according to the magnitude of seat vibration. The fatigue level was obtained by measuring reaction time of driver based on light stimulation using Reaction Timer L - 77. The levels of seat vibration were measured by vibration meter. To know the effect of seat vibration, length of working experience and working time to the work fatigue of the bus drivers was using Kruskall-Wallis analysis.
Research results shows that mean of seat vibration is 2.5 m/secz working time is 15.8 hours/day, working experience is 13.1 years and driver's fatigue level is classified as low level. Otherwise, there is no significant difference between seat vibration (p = 0.1340), length of working experience (p = 0.927), and working time (p = 0.165) to work fatigue.
Keywords: vibration
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