Ergonomic analysis of handgrips on Suroboyo bus using the rapid upper limb assessment (RULA) method

Global technological developments continue along with the era of globalization. Apart from that, currently all our needs can be reached easily, including in the field of transportation technology. One mode of public transportation that is already operating in Surabaya is the Suroboyo Bus. The Suroboyo Bus offers various facilities including handgrips for passengers. However, in reality the handgrip is considered to lack ergonomics and many Suroboyo Bus passengers complain of discomfort when using it. This research distributed questionnaires, Of the 30 respondents, 40% of respondents have the potential to experience injury with a low risk level and 60% of respondents have the potential to experience injury with a moderate risk level. This research was carried out using the Rapid Upper Limb Assessment (RULA) method and simulated using jack software. It can be concluded that Suroboyo Bus needs to develop handgrips so that the height of the handgrip straps can be adjusted to the height of Suroboyo Bus passengers and their comfort level. In addition, the handgrip can be adjusted to the shape of human fingers and is coated with foam to minimize complaints or injuries such as muscle cramps, tingling and numbness.