A Policy on Arterial Highways in Urban Area
Amer. Assoc. of State Highway Officials, 1957 - Roads - 558 pages
The Committee on Planning and Design Policies was organized in 1937 upon authority of the Executive Committee of the Association. The purpose of the committee is the formulation of administrative policies looking toward the incorporation in practice of highway design features which will result in maximum safety and utility.
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INTRODUCTION AND SUMMARY
Pattern of Urban Arterial Highways
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accommodate adjacent arrangement at-grade expressways auxiliary lanes barrier curbs bus stops bus turnout buses central business district chapter clearance cloverleaf cloverleaf interchange collector-distributor roads connections construction cross section cross slope cross streets crosswalks curve depressed freeways design capacity design speed desirable desire lines diamond interchange direction drivers edge elevated freeway existing streets exit expressways at grade facility feasible feet wide Geometric Design Policy grade separation improvement intersections lateral ramps layout length major streets maneuver median lane ment minimum narrow necessary normally number of lanes offset outer separation overcrossing parallel ramps parking lanes passenger pattern pavement peak hours percent permit preferably radii ramp terminals right turns route running speed shown in figure side sight distance signal control space speed-change lanes structure superelevation tion traffic lanes traffic signals traffic volumes trucks turning traffic turnout U-turns urban areas urban arterial highways viaduct weaving