Geometric Design Standards for Highways Other Than Freeways
American Association of State Highway Officials, 1962 - Roads - 12 pages
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2-lane highway varies 2-lane roads 20 percent trucks AASHO alinement Arterial Highways barrier curbs cars per hour central angle clearance coefficient of friction crest vertical curves criteria for measuring cross slope Current ADT degree of curve Design of Rural design standards design volume Distance at Crest divided highway eye height factor of safety feet and preferably foot per foot Geometric Design Policy height of eye height of object highway design highway length hour per lane ideal conditions inches increase length of highway low volume roads measuring sight distance median minimum length minimum sight distance minimum width mountainous terrain multilane highways number of lanes passing sight distance Policy on Geometric right-of-way roadway surface sag vertical curves shown in table side slopes speed the capacity stopping distance stopping sight distance terrain with 20 traffic lane usable shoulder width vehicles per hour vertical curve 28 width of cut widths of surfacing