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Published: 1972

Total Pages: 36

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The purpose of the diagrammatic signing research project was to develop warrants and standards for the use of diagrammatic guide signs on controlled access highways. Vol. 1 summarizes the entire digrammatic signing research program objectives sponsored by the Federal Highway Administration. It presents the recommended warrants, standards and guidelines for diagrammatic guide signs and the research basis for the recommendations, and suggests techniques and measures for the evaluation of highway signing.