Assessment of Ergonomic Studies in the Design of an Off Road Vehicle

Abstract

This article presents an ergonomic assessment performed in the CL-02 prototype in the Baja Society of Automotive Engineers (SAE) Brazil competition. Using computer simulations in Computer Aided Tridimensional Interactive Application (CATIA) software and physical validations through a full-scale mockup, the project aimed to ensure comfort and safety for drivers with different body types. Postural analysis was performed using the Rapid Upper Limb Assessment (RULA) method and photogrammetry, involving drivers representing the first percentile, forty-second percentile, ninety-ninth percentile. The ergonomic evaluation determined precise spatial relationships between the driver and key vehicle components, including distances to the steering wheel, pedals, and seat reference points. These measurements highlight a layout that supports comfort and efficiency, with optimized posture through backrest inclination and steering wheel positioning. The methodology also allowed for the identification of improvement opportunities for future projects, such as fine-tuning the pedal position. The study reinforces the importance of integrating ergonomics and engineering from the early stages of design.