Subcompact vehicle energy absorbing steering column evaluation and improvement : final report.

Testing was conducted for the purpose of analysing the interrelationships between and the effects of automobile interior surfaces on driver injury. Testing was limited to frontal impacts of subcompact vehicles. At velocities near 20 mph variations in steering wheels, steering columns and knee restraints did not substantially affect the driver's injury severity. At velocities near 25 mph these effects became evident.