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Hand positions and forces during truck ingress
Many truck drivers are injured each year due to falls while getting into and out of their vehicles. Design guidelines for steps and handholds are not based on biomechanical data and do not reflect a systems approach to design. As part of a broader effort to improve ingress/egress safety, a...
Measurement of the contour and deflection of vehicle seats for comparison with the FMVSS 213 dynamic test bench
Federal Motor Vehicle Safety Standard (FMVSS) 213 specifies a bench seat that is used in dynamic testing of child restraint systems. To assess the representativeness of the FMVSS 213 bench, data from 54 passenger cars, minivans, and SUVs were analyzed to quantify the side-view profile of the seat...
An eyellipse for rear seats with fixed seat back angles
This paper describes the development of the fixed seat eyellipse in the October 2008 revision of SAE Recommended Practice J941. The eye locations of 23 men and women with a wide range of stature were recorded as they sat in each of three second-row bench seats in a laboratory mockup. Testing was...
Sitter-selected postures in an office chair with minimal task constraints
Studies of office workers- postures indicate that reclined postures are less common than upright or forward-leaning postures. Laboratory studies have shown that back extensor activity and internal pressure in the lumbar intervertebral disks are lower in reclined postures. Given these advantages,...