Fifty-six 30-mph frontal dummy sled tests were conducted with dummies of three different manufacturers to determine the repeatability and reproducibility of their performance in three point restraint systems. Repeatability of impact acceleration response for any of the three dummy makes tested in longitudinal collision shows a coefficient of variation from 1.8% to 2.6% for the head and 2.4% to 5.8% for the thorax. Reproducibility of the impact responses have a coefficient of variability of 4% and 6% respectively.

Eleven 30-mph sled tests of a three point belt restrained dummy were performed to study the shoulder rotation and acceleration responses as a function of shoulder belt height location on the dummy's torso. Test results indicate that shoulder rotation is highly affected by placement of the belt on the thorax. Its high location minimizes shoulder rotation whereas the placement below the CG maximizes it. The acceleration responses of the dummy are at minimum with the belt placement at the CG of the thorax.

Ten frontal impact tests were conducted to study the effects of obliquely oriented acceleration vector on the repeatability of dummy response. In 12 deg. oblique impacts, with only one dummy make tested, the coefficient of variation had the same general dispersion as those found in frontal impacts.