Download or read book Retroreflective Borders on Traffic Signal Backplates written by United States. Federal Highway Administration and published by . This book was released on 2010 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The ... case study showcases a successful and effective low-cost treatment that measurably improved safety at three signalized intersections in Columbia, South Carolina (SC). The treatment consisted of adding a retroreflective border to the existing signal backplates."--Web site.