Documentation is made of various structures and mechanical devices for promoting highway safety. Reports pertain to highway signs and displays, barriers, medians, breakaway poles and supports, crash cushions, parapets, guard rails, curbs, and fences. Discussions are presented of impact attenuators, diagrammatic signs, glare screens, high intensity sheeting, and arrester beds. Also noted are retroreflective color coded signs, median grates, louvered signs, redirecting curbs, and other installations. Some attention is given to tests and methodology. (Contains 142 abstracts)


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