LOW PROFILE MARKERS FOR WET/NIGHT VISIBILITY
The feasibility of using a high efficiency retroreflector as a low profile highway marker to resolve the problem of wet night lane and edge delineation problems on highways was determined. Although the placing of delineation devices flush to the road surface solves the problem of snow plow damage, the tremendous loss of light and the inability to collect and reflect adequate light with retroreflective principles, other methods of achieving the objective must be considered. The costs involved in procuring and placing the devices is also a limiting factor. Details of the implementation, including placing and subsequent testing in 10 states, are described. The evaluation of aluminized-backed markers and Lucite-backed markers are detailed.
- Prepared for the FHWA Office of Research and Development.
Washington, DC USA 20590
- Publication Date: 1978-11
- Features: Appendices; Photos;
- Pagination: 18 p.
- TRT Terms: Aluminum; Edge lines; Highway delineators; Loss and damage; Moisture content; Night visibility; Retroreflectors; Road markings; Snowplows
- Uncontrolled Terms: Wet conditions
- Old TRIS Terms: Delineators (Traffic); Traffic marking
- Subject Areas: Geotechnology; Highways; Materials; Vehicles and Equipment;
- Accession Number: 00194193
- Record Type: Publication
- Report/Paper Numbers: FHWA-TS-79-205 Final Rpt.
- Files: TRIS, USDOT
- Created Date: Jun 30 1979 12:00AM