Cranfield Institute of Technology was contracted by the Transport and Road Research Laboratory (TRRL) to investigate the ranges of forces that disabled drivers can exert on the primary controls of a car, and the forces and movements required to operate the primary controls of some present models. This report describes the work of this study which was undertaken over the period July 1986 to March 1989. The study consisted of three phases; search for existing data in the literature, at the assessment centres, and from car manufacturers; trials of car control characteristics of some current standard models; and trials assessing the strength characteristics of samples of disabled drivers.

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