The gradual improvement in slip resistance of floor finishes is the result of several years of slip measurements taken with various instruments. Some of these instruments can be used to measure slip resistance for shoe sole and heel materials. Abrasive floor surfaces provide traps for the presence of foreign materials. Portable non-self-supporting ladders should be erected more in conformance with anthropometric measurements. Vehicle access systems should be designed utilizing a concept of three-point suspension and established techniques for good step placement.
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