The lowest CoF value that will prevent a slipping accident is not known because it depends on the method of measurement and the precise conditions. In this project all variables that could in#uence CoF were controlled except for the thickness of the #uid "lm and the foot movements of the test subject. It is believed that the thickness of the "lm was consistent as a result of many years of practice in experimentation but there is no practical method of measuring it. Similarly, the variation in footsteps is probably small due to much conscientious practice. Experiments with Rig 3 cannot place a value on the degree of risk, but risk of slipping decreases as the CoF rises. At a CoF value of 0.4 as measured by this method, slipping appears to be extremely unlikely, and at a level of 0.3 there is a feeling of a substantial and safe grip. Nevertheless, the objective was achieved of designing experiments to evaluate the slip resistance of a wide range of soling materials on representative commercial #oors, either clean or when coated with polish, water or oil and on ice.