Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
"Invisible track" type of highway
Experimental section being constructed in Kentucky; two reinforced-concrete beams are constructed at approximately 5 ft. from center to center, and 18 in. wide, and are covered with 1 1/2 in. of rock asphalt; to assist traffic in following trackways a rise of 3 in. is made between tracks, just enough to indicate where they are.
"Invisible track" type of highway
Experimental section being constructed in Kentucky; two reinforced-concrete beams are constructed at approximately 5 ft. from center to center, and 18 in. wide, and are covered with 1 1/2 in. of rock asphalt; to assist traffic in following trackways a rise of 3 in. is made between tracks, just enough to indicate where they are.
"Invisible track" type of highway
Eng. Contracting (Roads Streets)
1923
2 pages
1 Fig.
Aufsatz (Zeitschrift)
Englisch
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