Adequately maintained retroreflective signs improve nighttime highway navigation and reduce the risk of crashes by bouncing light from vehicle headlights back toward the vehicle and the driver's eyes, … [Read more...] about Sign Retroreflectivity Toolkit
Retroreflectivity
Nighttime Visibility of Prototype Work Zone Markings Under Dry, Wet-Recovery, and Rain Conditions
This paper presents the findings of a dynamic pavement marking visibility study conducted as part of the FHWA Highways for LIFE Technology Partnerships Program Temporary Wet-Weather Pavement Markings … [Read more...] about Nighttime Visibility of Prototype Work Zone Markings Under Dry, Wet-Recovery, and Rain Conditions
Red Retroreflective Raised Pavement Markings: Driver Understanding of Their Purpose
Research was conducted to evaluate drivers' understanding of red retroreflective raised pavement markers (RRPMs) on two-lane and four-lane undivided and divided roadways. The study included 191 … [Read more...] about Red Retroreflective Raised Pavement Markings: Driver Understanding of Their Purpose
Temporary Wet-Weather Pavement Markings for Work Zones
This final report summarizes the work completed during Phase I of the project. The project aims to refine and evaluate a paint and drop-on element-based all-weather pavement marking system customized … [Read more...] about Temporary Wet-Weather Pavement Markings for Work Zones
Guidelines for Evaluating Public Interest Findings and Certifications for Retroreflective Sheeting for Traffic Control Signs
This document provides additional information for Divisions of Federal Highway Administration to assist in decision-making in this specialized technical area. This document was requested by the … [Read more...] about Guidelines for Evaluating Public Interest Findings and Certifications for Retroreflective Sheeting for Traffic Control Signs
Know Your Retro 2007: New MUTCD Sign Retroreflectivity Requirements
The second revision of the 2003 MUTCD introduces new language establishing minimum retroreflectivity levels that must be maintained for traffic signs. This document describes methods that can be used … [Read more...] about Know Your Retro 2007: New MUTCD Sign Retroreflectivity Requirements