These problems are best studied through aĬoordinated program of cooperative research. Transportation results in increasingly complex problems of wide interest to highway authorities. However, the accelerating growth of highway State DOTs individually or in cooperation with their state universities and others. Often, highway problems are of local or regional interest and can best be studied by Transportation (DOTs) administrators and engineers. Systematic, well-designed, and implementable research is the most effective way to solve many problems facing state departments of NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM Roadside Barrier Systems Placed on MechanicallyĬonduct of Research Report for NCHRP Project 22-20(02) Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.ĭesign Guidelines for Test Level 3 through Test Level 5 Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book.
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