Driver Hand Control Reach
|Publication Date:||1 March 2016|
This recommended practice describes boundaries of hand control locations that can be reached by a percentage of different US driver populations in passenger cars, multi-purpose passenger vehicles, and light trucks (Class A vehicles). This practice is not applicable to heavy trucks (Class B vehicles).
The description of driver hand control reach envelopes was developed using data acquired from test subjects performing reach tasks in test fixtures simulating a range of actual vehicle configurations [Hammond and Roe, 1972; Hammond, et al, 1975]. The test subjects included equal numbers of men and women selected to represent the (United States) driving population on the basis of stature and age, and were tested both with and without an upper torso three-point restraint (the torso restraint was a diagonal non-extending shoulder strap attached separately to the lap belt; it was not a continuous loop system). The envelopes constructed using the non-extending shoulder and lap belt are meant to define a restrained hand reach, and the envelopes constructed using the lap belt only describe an unrestrained hand reach. The hand reach envelopes are three-dimensional surfaces described in table form and can be referenced to a particular vehicle seating configuration as described in Sections 5 and 6. The tables contained in this practice describe the boundaries to which at least 95% of US drivers can reach, based on the underlying data.