A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Experimental Pavement Delineation Treatments
In 1975, 43 test sections of various delineation treatments were installed in an attempt to develop treatments with better visibility and durability than the color-contrast and synthetic-binder-concrete then used in New York State to delineate shoulders and medians adjacent to asphalt pavements. Materials evaluated were polysulfide and coal-tar epoxies, one- and two-component polyesters, portland cement, acrylic paints, modified-alkyd traffic paint, preformed plastic tape, and thermoplastic markings. Neat applications, sand mortars, and surface treatments were installed in several geometric patterns including cross-hatches, solid median treatments, and various widths of edge lines. Although several materials provided good daytime visibility and durability, most did not provide good night and wet-weather visibility. Thermoplastic pavement markings generally performed very well, providing good visibility under adverse viewing conditions for at least 4 years. Thermoplastic 4-in. wide edge lines appear to provide adequate visibility for most conditions. Wider lines or cross-hatching provide greater visibility where increased emphasis of the shoulder or median is desirable.
Experimental Pavement Delineation Treatments
In 1975, 43 test sections of various delineation treatments were installed in an attempt to develop treatments with better visibility and durability than the color-contrast and synthetic-binder-concrete then used in New York State to delineate shoulders and medians adjacent to asphalt pavements. Materials evaluated were polysulfide and coal-tar epoxies, one- and two-component polyesters, portland cement, acrylic paints, modified-alkyd traffic paint, preformed plastic tape, and thermoplastic markings. Neat applications, sand mortars, and surface treatments were installed in several geometric patterns including cross-hatches, solid median treatments, and various widths of edge lines. Although several materials provided good daytime visibility and durability, most did not provide good night and wet-weather visibility. Thermoplastic pavement markings generally performed very well, providing good visibility under adverse viewing conditions for at least 4 years. Thermoplastic 4-in. wide edge lines appear to provide adequate visibility for most conditions. Wider lines or cross-hatching provide greater visibility where increased emphasis of the shoulder or median is desirable.
Experimental Pavement Delineation Treatments
J. E. Bryden (author) / R. A. Lorini (author)
1981
44 pages
Report
No indication
English
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