Signs that seem to glow in the dark can help motorists navigate the roadway safely at night. They are made with retroreflective sheeting materials that return light from headlights back toward the … [Read more...] about How Retroreflectivity Makes Our Roads Safer
Materials
A Determination of the Appropriateness of Virginia’s Retroreflective Sign Sheeting Specification for Flourescent Orange Construction and Maintenance Signs
To ensure the safe and efficient movement of traffic through a highway network during nighttime conditions, traffic signs are either illuminated or made retroreflective. Since illuminating all highway … [Read more...] about A Determination of the Appropriateness of Virginia’s Retroreflective Sign Sheeting Specification for Flourescent Orange Construction and Maintenance Signs
TE-29: Retroreflectivity
Retroreflective paints and coatings degrade with the effects of traffic and weather, and it's difficult to determine the best time to replace retroreflective markings and signs. TE-29 is an effort to … [Read more...] about TE-29: Retroreflectivity
Retroreflectivity: Raising the Nighttime Brightness of Traffic Signs and Markings
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
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