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Anthropometry, the Measure of Man, is an old and well established branch of Anthropology. The present report deals with the identification and application of the pertinent dimension of the driving population and the use of these data in the design of the driver's workspace. The statistical nature of the information is emphasized. The devices used to gather data (anthropometers) and their statistical evaluation and analysis are discussed and illustrated. The concept and application of the SAE manikins and the driver's eye ellipses are presented.

Results of previous SAE drivers' eye-location studies have been used to develop a fixed seat eyellipse and contours that describe drivers' head locations. Centroid data from these and other eye-location studies are used as a means of locating the SAE eyellipse according to seat back angle. Part I comprises the discussion of these data. Studies recently completed provided data on drivers' eye locations for varied vehicle packages ranging from sports cars to heavy trucks. The results are summarized in Part II as a series of tables, which include statistical definitions of tangent cutoff eyellipses. Part III of this report describes a method for positioning a fixed seat eyellipse according to seat back angle. A method is also shown for measuring headroom relative to seat back angle.

This report presents the results of the SAE Human Factor Committee Driver Control Reach Study conducted in June-August 1971. Over 100 test subjects were measured on three test fixtures representing a sports car, a typical passenger car, and a heavy truck. Finger grasp reach was recorded to 40 locations in front of the driver. The report presents the background information for a forthcoming SAE Recommended Practice on Driver Arm Reach.

Data from fourteen driver workspace studies have been used to develop a two dimensional model which defines driver selected horizontal seat position as a function of chair height for various percentile accomodation levels. The tool is referenced to a manikin ball of foot point and can be used for design and/or checking purposes.

The SAE Controls Reach Study provided the opportunity to obtain a considerable amount of driver work space data in addition to hand and foot reach. A side-view film recording was made of each test subject assuming a driving attitude and looking straight ahead. Of concern were locations for the driver's eyes, top of head, back of head, knee, and seat. These data were combined with other data previously reported to develop tools that will aid the designer in describing space and comfort requirements for seated drivers and passengers in automotive packages. Fixed-seat eye ellipses, head locations, shin-knee locations, and preferred seat positions are described.