Sustainable Measurement of Mental and Physical Workloads of Transjakarta Bus Drivers

Abstract

Abstract The number of accidents in the Transjakarta mode of transportation is increasing from year to year. Accidents can occur dueto the driver’s workload which is not ideal so that it affects the driver’s negligence while driving. Therefore, this study aims to investigate the workload experienced by Transjakarta bus drivers using a comprehensive approach that includes questionnaires, pulse measurement, and analytical methods such as NASA-TLX, Cardiovascular Load, Correlation Test. The process of collecting data using the NASA Task Load Index method involving 30 samples of Transjakarta bus drivers was used which was divided into two stages, namely Paired Comparison and Event Scoring. The Cardiovascular Load method was used from calculating the Max Pulse Rate data, calculating %CVL which ends with identifying the results of the average %CVL. The result shows by using the NASA-TLX (mental load) and Cardiovascular Load - CVL (physical load) analysis methods was be used as a source of data that was go through acorrelation test and tested using Minitab software. The results obtained from the NASA-TLX method show that the mental load was quite high with an average value of 70.8%. The CVL result shows that the highest percentage of fatigue level was achieved at value of 27.59%. In addition, Correlation Test Results of %CVL and WWL showed that the correlation between %CVL and WWL was achieved at value of -0.197 and the P-Value was 0.296. It is found that the results of an inverse relationship were found between %CVL and WWL.