Grading system developed in Portage County, Ohio, makes it possible for engineer to evaluate system of roads; geometric standards, drainage, traffic count, conditions of structures, safe speed and frequency of accidents are among factors considered. Before Ohio Highway Eng Conference.
Chart indicates when road is in tolerable condition
Better Roads
Better Roads ; 23 , n 7
1953
Aufsatz (Zeitschrift)
Englisch
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Thoughts on tolerable pavement wear
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