Results of a 1973-74 evaluation of Stimsonite Model 99 raised markers, intended for use with tungsten-carbide snowplow blades, are reported and experience with earlier versions of this marker are summarized. It was found that (1) present castings may be suitable for use with steel blades, (2) extensive casting damage occurred when plowed by tungsten-carbide blades, (3) casting shape allows the snowplow nose-shoe and cutting edge to contact and damage the reflector, (4) some snowplow blade damage will occur its extent and effect on plow serviceability cannot now be predicted, (5) the reflector retention method was unsatisfactory at the start of the test (indications are that a modification to the spring clip retention method or use of adhesives may prove satisfactory), (6) markers should not be installed where the possibility of wrong-way plowing exists, and (7) in several early installations some failures observed were due to improper installation practices.

Media Info

  • Pagination: 29 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00130540
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: NYSDOT-ERD-75-RR-34 Intrm Rpt.
  • Contract Numbers: 22-1
  • Created Date: Mar 29 1976 12:00AM