Experimental and numerical evaluation of whole-body and hand-arm vibration exposure in motor-scooter riders

Abstract

This study addresses the critical need to understand vibration exposure among motor-scooter riders, particularly those engaged in commuting, household errands, and delivery services where prolonged riding is common. The research focuses on evaluating riders’ exposure to whole-body vibration (WBV) and hand-arm vibration (HAV). Motor-scooter riders are frequently subjected to varying levels of whole-body vibration (WBV). This exposure can lead to musculoskeletal issues, including tissue and ligament strain, as well as chronic conditions such as lower back pain. The study involved seven healthy male motorcyclists aged 21–28 years, with varying body weights. Vibrations were measured at riding speeds of 20, 25, 30, 35, 40, and 45 km/h, and analyzed in accordance with ISO 2631 and ISO 5349 standards. Results indicated that the WBV levels exceeded the caution zones defined by ISO 2631, while the HAV levels remained within the safety limits specified in ISO 5349. Vibration exposure varied significantly with rider weight and speed. Heavier riders experienced higher levels of vibration, and an increase in riding speed led to elevated vibration magnitudes. These findings suggest that frequent motor-scooter riders are at potential risk for vibration-induced health issues. Therefore, optimizing scooter design and promoting vibration-minimizing riding practices are essential for improving rider safety and health.

Keywords

vibration exposure motor scooter riders whole-body vibration hand-arm vibration safety standards

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