Evaluation of Snowplowable Raised Pavement Markers

In 1992, the Iowa DOT installed 6200 snowplowable Raised Pavement Markers (RPM) in six areas around the state. They were evaluated at six-month intervals until the replacement of the reflective lenses in 1995. During this time, the RPM performed well. The Iowa Department of Transportation uses deicers and sand during the winter to control snow and ice on the pavement. The sand and the chemicals reduced the reflectivity of the reflectors. With minimum or no maintenance the visibility of the RPM is low. Although the RPM appear to present a problem during snow plowing, they are an excellent device for lane delineation at night in adverse weather. Lane delineation during adverse weather is a problem, especially at night. Some raised marking devices have been tried for lane delineation, but they did not withstand the snowplows during snow removal operations. Painted pavement markings are not visible during rainy conditions.

• Record URL:
  • http://publications.iowa.gov/id/eprint/19741
• 
• Corporate Authors:

  Iowa Department of Transportation

  Project Development Division
  Ames, IA  United States  50010

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Reyes, Jaime
• Publication Date: 1995-11

Language

• English

Media Info

• Media Type: Print
• Edition: Final Report
• Features: Maps;
• Pagination: 9p

Subject/Index Terms

• TRT Terms: Deicing; Deicing chemicals; Raised road markings; Reflectivity; Snow removal; Snowplows; Winter maintenance
• Uncontrolled Terms: Adverse weather; Snowplowable markers
• Geographic Terms: Iowa
• Subject Areas: Highways; Maintenance and Preservation; Pavements; Vehicles and Equipment; I62: Winter Maintenance;

Filing Info

• Accession Number: 01079161
• Record Type: Publication
• Report/Paper Numbers: HR-558, IA-93-02
• Files: TRIS, USDOT, STATEDOT
• Created Date: Oct 22 2007 9:58AM