Policies formulated by American Assn of State Highway Officials for guide purposes concerning permissibility of crossings or entrances at grade, safety rest areas, frontage roads, service stations, signing, police and maintenance facilities, lighting, and fencing.
Policies affecting interstate design
Traffic Eng
Traffic Engineering ; 28 , n 8 ; p 14-17 + 33
1958
Aufsatz (Zeitschrift)
Englisch
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