Find out about the physics of retroreflectivity, why luminance is an important performance measurement for signs, how angularity affects sign visibility, and what defines ASTM sheeting types.
December 1, 1901Understanding Retroreflectivity and Sign PerformanceUnderstanding Retroreflectivity and Sign Performance
Despite improvements in traffic safety over the past decade, several current trends reduce the ability of traffic signs to provide guidance and safety—making signs that return more light to drivers more important than ever.
According to the Federal Highway Administration, (FHWA) fully half of all traffic fatalities occur at night, even though the nighttime hours account for only a quarter of total vehicle miles driven.