United States >
All 3M Products >
Safety and Security >
3M Roadway Safety >
Science of Roadway Safety >
Understanding Reflectivity and Sign Performance
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.
Follow us on twitter
© 3M 2014. All Rights Reserved.