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Prepared for the US Congress in 1985. A major conclusion from this critical analysis and synthesis of literature is that the accident benefits of realinement projects are generally insufficient alone to justify the cost of the improvements. Another major conclusion is that because of the high rate of single-vehicle accidents on highway curves, low cost roadside safety improvements on highway curvesmay be one of the most cost-effective kinds of improvements. Book , books,pavement edge drop expert, pavement edge drop off expert, work zone safety expert, construction zone safety expert, roadway hydroplaning expert, traffic engineering expert, traffic sign expert, traffic signal expert, pavement marking expert, highway safety expert