Driver sitting comfort and discomfort (part I): Use of subjective ratings in discriminating car seats and correspondence among ratings
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- Driver sitting comfort and discomfort (part I): Use of subjective ratings in discriminating car seats and correspondence among ratings
- Kyung, Gyouhyung; Nussbaum, Maury A.; Babski-Reeves, Kari
- Comfort; Discomfort; Driving posture; Packaging; Sitting
- Issue Date
- ELSEVIER SCIENCE BV
- INTERNATIONAL JOURNAL OF INDUSTRIAL ERGONOMICS, v.38, no.5-6, pp.516 - 525
- Several subjective rating schemes were investigated to determine which might be the most effective for use in designing and evaluating car seats, and what relationships exist among these schemes. Participants (n=27) completed short-term driving sessions, in six combinations of seats (from vehicles ranked high and low on overall comfort), vehicle class (sedan and SUV), and driving venue (lab-based and field). Overall ratings were obtained, as well as separate measures of comfort and discomfort of the whole body and local body parts. No association was found between subjective ratings and a publicly available overall vehicle comfort score (J.D. Power and Associates' Comfort Score), implying that other factors besides sitting comfort/discomfort (and car seats) account for overall vehicle comfort. Other major results were that contemporary car seats appear to best accommodate those of middle stature, that packages/seats of sedans were preferred over those of SUVs, that separate processes appeared to be involved in determining whole body comfort and discomfort, and that ratings of comfort were most effective at differentiating among the car seats. Finally, a scheme for the use of subjective ratings was suggested: discomfort ratings for ensuring basic seat requirements (pain prevention-oriented) and comfort ratings for promoting advanced seat requirements (pleasure promotion-oriented). Relevance to industry: Evidence regarding the advantages and disadvantages of different subjective rating schemes can facilitate future design and evaluation of automotive seats.
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