Steering Wheel:
There will be required consideration of steering wheel diameter, as well as grip diameter to accommodate the range of the population. Acknowledged within the seat adjustment section, the reach range must be evaluated. Reach was defined as the horizontal distance from the back of the seat to the steering wheel with a specified angle between the bicep area and torso of the body and a specified angle between the bicep and the forearm when the subject is positioned within the driver's seat of the vehicle.
The reach distance should enable the person with the smallest reach to be able to firmly grip the steering wheel and the largest person to sit comfortably without being restricted (designed for minimum and maximum). All should be able to adhere to the ergonomic angles already discussed. These specifications permit the user to be ergonomically placed in the vehicle, without putting unnecessary stress and strain on different areas of the arms, back, and shoulders. The steering wheel should also be made of a sweat-resistant, wear-resistant material(s) common across the automobile industry.
In addition, the ability to utilize a modified shape can be feasible so as to allow for the better utilization of space so long as there is no interference or stress placed on the user.