Based on available literature and a survey of state highway agencies, the spacing of raised reflectorized pavement markers (RRPM) were reviewed. The District of Columbia and the Commonwealth of Puerto Rico were also included in the survey. This review found that there is variation in the spacing of RRPM use. Policies varied concerning use based on volume, artificial lighting conditions, accident rates and type of road. A few states do not use RRPM and cite snow removal as the reason. Most states use RRPM and consider them to be very effective in traffic control and accident reduction. Several cost analyses were reviewed and these studies concluded that RRPM are cost effective in accident reductions. Recommendations for further research are included.
Spacing of Raised Reflective Pavement Markers. State of the Art
1988
67 pages
Report
No indication
English
Highway Engineering , Road Transportation , Transportation & Traffic Planning , Transportation , Raised pavement markings , Reflectorized pavement markings , Highway design , Spacing , Reviews , Highway maintenance , Traffic control devices , Surveys , Pavement markings , Delineators(Traffic) , Visibility , Accidents