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Occupant Positioning and Accommodation

<p>Occupant positioning research addresses specific issues related to occupant accommodation and safety. In-vehicle and in-laboratory testing involves measuring subject positioning and posture for a wide range of subject and vehicle characteristics to determine the relationship between driver-preferred positioning and vehicle factors, such as seat height, wheel-to-pedal distance, and seatpan angle. The results have been used to develop an improved seating accommodation model and a new H-point manikin for use in measuring and calibrating vehicle interiors and seats.</p> <p>Other studies include:<ul> <li>Quantifying seat and seatback pressure distributions produced by children and small adults for use in the development of occupant classification anthropomorphic test devices (OCATDs) for evaluating pressure-based airbag suppression systems <li>Investigating the relationships between occupant stature and age to ease of ingress and egress as functions of vehicle seat-to-ground height, doorway dimensions, and rocker-panel width <li>Investigating the relationships between driver stature, roof height, windshield header location, and roof siderail positioning to the driver perception of, and satisfaction with, headroom and vision <li>Studying belt fit of older children with and without booster seats <li>Investigating the ability of the elderly to don seat belts</ul></p>

Recent Publications

Effects of driver characteristics on seat belt fit
Matthew P. Reed, Sheila M. Ebert, Jason J. Hallman

conference paper IN: Stapp car crash journal. Vol. 57 (Nov. 2013), p. 43-57

Effects of obesity on seat belt fit
Matthew P. Reed, Sheila M. Ebert-Hamilton, Jonathan D. Rupp.

journal article UMTRI-2011-27
IN: Traffic Injury Prevention. Vol. 13, no. 4 (2012), p. 364-372.

Introduction: Obesity has been shown to increase the risks of some types of injury in crashes. One way in which obesity may increase...

An eyellipse for rear seats with fixed seat back angles
Matthew Reed.

conference paper SAE 2011-01-0596

This paper describes the development of the fixed seat eyellipse in the October 2008 revision of SAE Recommended Practice J941. The eye...

Assessing the effects of the design population on seat dimensions
Matthew P. Reed.

report UMTRI-2011-39

Dimensional recommendations for automotive seat design are often based on populations different from the intended user population....

Measurement of the contour and deflection of vehicle seats for comparison with the FMVSS 213 dynamic test bench
Matthew P. Reed.

conference paper SAE 2011-01-0265

Federal Motor Vehicle Safety Standard (FMVSS) 213 specifies a bench seat that is used in dynamic testing of child restraint systems. To...