Incorporating Anthropometric Measurement and Pressure Distribution Assessment in Car Seat for Fatigue Management: An Exploratory Ergonomic Analysis

Abstract

An ergonomically designed driver's seat is essential for assuring quality, comfort, and safe driving. Comprehending the influence of anthropometric characteristics on seat-body contact can facilitate the development of comfort-optimized seating systems. This exploratory study examined the relationship between anthropometric dimensions and pressure distribution patterns in drivers deployed within a simulated driving environment. A pressure mapping system (Tactilus®, SPI, USA) was used to capture seat pan pressure profiles, while key anthropometric variables were recorded using an anthropometer. Eleven participants completed the driving posture protocol, and multiple regression analysis was applied to model pressure distribution outcomes. Results revealed a strong, statistically significant positive relationship between buttock-popliteal length and pre-buttock pressure (r = 0.914, p<0.01), with the regression model explaining 81.8% of the variance in pre-buttock pressure. The results emphasize buttock-popliteal length as an important indicator of localized seat pressure, underscoring the necessity for seat designs that accommodate variations in thigh length. These findings establish an ergonomic foundation for incorporating anthropometric-pressure mapping assessments into the development of proactive driver assistance systems, aimed at preventing fatigue occurrences.