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This paper describes the philosophy and development of several functional anthropometric tools currently proposed for use in heavy truck workspace design. These functional tools are statistical models which describe the probabilistic location in heavy truck space of the body landmarks of populations of truck drivers with various percentages of males and females as a function of vehicle packaging parameters. Such tools provide the manufacturer with design flexibility to develop workspaces that maximize accommodation rather than restricting all manufacturers to one cab design dictated by design standards. Models in this paper were developed for truck driver populations with 50%/50%, 75%/25%, 90%/10%, and 95%/5% male to female ratios to enable design for a specific user group.

A small car packaging study investigated the effects of the wheel to pedal relationship on driver selected seat position. The horizontal seat positions of sixty subjects stratified by stature and sex to represent the general driving population were recorded in package configurations with three pedal to wheel distances and three pedal-wheel relationships to the interior surface of the vehicle (windshield header, pillar, glass and instrument panel surface). Subjects utilized comparable amounts of seat travel in all configurations. Pedal to wheel distance and pedal-wheel relationship to the interior surface of the vehicle affected seat position independently. When the heel point location was held constant and horizontal wheel location was moved forward in 45mm increments, the seat position distributions shifted forward 5 to 10mm.