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TRAFFIC ACCIDENTS THEIR CAUSES AND REMEDIES
ROAD BUILDING BOND ASSUMPTION AND RELATED
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50 mesh Agricultural air voids curve amount asphalt assumed design speed Austin B. K. Coghlan Bell County broken stripe capillary action cent College of Texas collisions concrete construction cost cubic foot developed driver E. W. Steel economic embankment Engineering Experiment Station engineering research engineering staff factor of safety four lane gap graded Gibb Gilchrist highway classification highway design Highway Engineering improvement Land Grant Land Grant Colleges material ment miles per hour mineral filler minimum mix number mortar obtained optimum moisture content P. J. A. Zeller pavement pedestrian policies problem R. L. Morrison roadbed safe sand factor Santa Fe Trail sections self-improvement shearing strength side slopes sight distance soil specific gravity specimens molded Steel and P. J. A. structure surface Texas Engineering Experiment Texas Highway Department three lane highways tion traffic density trucks vehicles per hour water-cement ratio wetter workability zero air voids