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Highways with SingleLane Surfaces
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12 feet 2-lane surface 3-lane highways 30 feet 4-lane divided highway acceleration and deceleration accommodate Assumed Design Speed cost cross traffic crossroad curbs deceleration lanes Design for Left design passenger vehicle design truck design vehicle desirable dividing strip drivers edge of pavement effected Feet Feet Feet feet in width feet wide grade crossings grade separation guardrail hazard inner lane inside lanes intersecting road Intersections at Grade lanes in width left turns left-turning vehicles lengths of opening locations long openings Median Strip Designs middle lane miles per hour minimum width narrow median strips parking lanes paths protected position semicircular ends semitrailer service roads shoulders shown in figure sight distance slopes stopped position strips at intersections superelevation tractor-trailers traffic density classification traffic lanes type of highway type of traffic ultimate development urban areas vehicle turning left vehicles making left vehicles per hour wide median strip widening width of median