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Transportation Research Record 1208, 1989. Summary of the best current thinking on on the development and presentation of design criteria for stopping, passing, intersection, decision, and railroad-highway grade crossing sight distances. Photocopy. Book,expert , 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