Outdoor testing of reflective sign materials
Most successful combinations of sign materials included Seibulite engineering- grade reflective letters, numerals, symbols, and silk- screened inks. ... Manufacturing and maintenance costs were considered during testing and are reflected in the recommendations. For example, black HDO, which is impervious to moisture, is recommended, reducing maintenance costs; the optional use of group 1 B gradeanbsp;...
| Title | : | Outdoor testing of reflective sign materials |
| Author | : | Thomas J. Nettleton, Equipment Development Center (Missoula, Mont.), United States. Federal Highway Administration |
| Publisher | : | - 1985 |
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