This study presents novel methods for evaluating a vehicle interior design’s ability to accommodate drivers’ preferences. The methods are based on the consideration of a driver’s intra-individual variability in the preferred settings of adjustable vehicle interior elements. A numerical index, named the Q index, quantifies a given vehicle interior design’s ability to accommodate a single driver’s preference. The Q index can also be used to quantify and visualize a design’s ability to accommodate a group of drivers. Illustrative examples on the use of the methods are presented.
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