Retroreflective sign sheeting and pavement marking paints degrade with effects of weather and traffic. In a highway environment, retroreflectivity is important because it promotes efficient traffic … [Read more...] about Retroreflectivity: Raising the Nighttime Brightness of Traffic Signs and Markings
Retroreflectivity
New Retroreflectivity Requirements for Signs and Pavement Markings
Section 406(a) of the 1993 DOT Appropriations act required the Secretary of Transportation the insert language into the Manual on Uniform Traffic Control Devices (MUTCD) to include a standard for a … [Read more...] about New Retroreflectivity Requirements for Signs and Pavement Markings
Updated Minimum Retroreflectivity Levels for Traffic Signs
The development of minimum retroreflectivity (MR) levels for traffic signs has been going on for more than two decades, but it was significantly accelerated in 1984 when the Center for Auto Safety … [Read more...] about Updated Minimum Retroreflectivity Levels for Traffic Signs
Status of Rulemaking for Minimum Retroreflectivity Guidelines
The Federal Highway Administration (FHWA) has worked to develop minimum levels of retroreflectivity for traffic signs and pavement markings that would enhance mobility and increase safety for the … [Read more...] about Status of Rulemaking for Minimum Retroreflectivity Guidelines