Raised reflective pavement markers are currently being used in a number of States as a supplement to painted lines. In areas of little or no snow, these markers provide excellent wet-night delineation. However, in areas of heavy snowplowing the markers are easily removed from the pavement by the plows. In an effort to provide markers in the snow belt areas, two different approaches have been followed. One is to protect the marker by means of a casing and allow the snowplow to either ride up over the marker or to depress the reflector into the casing. The second method is to place the marker in a groove so that the top of the reflector is below the pavement surface. This report summarizes the work that has been completed on the installation and evaluation of the recessed snowplowable markers. The evaluation indicates that the recessed reflector marker system is a feasible method of protecting the reflector from snowplow damage. After 4 years of service, this system has continued to provide a useable degree of wet-night delineation.

  • Corporate Authors:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Niessner, C W
  • Publication Date: 1980-3

Media Info

  • Pagination: 28 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00318174
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FHWA-TS-80-225
  • Files: NTIS, TRIS, USDOT
  • Created Date: Sep 16 1981 12:00AM