Experimental design for a sustainable society among motorcyclists: The influence of road types and speeds on whole-body vibration exposure and musculoskeletal disorders in motorcyclists

Motorcycles are very popular motorized vehicles and are widely used around the world. The main ergonomic hazard associated with the continuous use of motorcycles is the motorcyclist’s exposure to vibrations, which can potentially cause musculoskeletal disorders (MSDs). This can lead to significant health issues and may also heighten the risk of accidents due to increased driving discomfort. This study aims to investigate the impact of road type and motorcycle speed on WBV exposure and MSD complaints among motorcyclists. An experimental design method was used in this study, with samples subjected to a combination of treatments: riding a motorcycle on different road types and at different speeds. Vibration measurements and calculations were carried out using an accelerometer sensor based on ISO 2631-1, and MSD complaints were assessed using the Body Map Questionnaire (BMQ). The results of this study showed that riding on concrete roads resulted in a significantly higher vibration acceleration of 37.74% and a higher score of MSD complaints of 18.67% compared to asphalt roads. Riding at a speed of 50 km/h resulted in a significantly higher vibration acceleration of 31.03% and a higher score of MSD complaints of 9.49% compared to a speed of 30 km/h. This indicates that increased vibration exposure increased the risk of MSD complaints in this study. These findings highlight the need for measures to mitigate WBV exposure and its adverse health effects on motorcyclists, particularly when riding on rough road surfaces at higher speeds. Recommendations include limiting riding duration and implementing vibration-reducing technologies in motorcycle design.