ROADWAY MARKERS WHICH REFLECT LIGHT

Brand	Owner	Address	Description
PARKWAY	MINNESOTA MINING AND MANUFACTURINGCOMPANY	900 FAUQUIER AVENUE ST. PAUL MN	Roadway Markers which Reflect Light Visually;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A system for the automated determination of retroreflectivity values for reflective surfaces disposed along a roadway repeatedly illuminates an area along the roadway that includes at least one reflective surface using a strobing light source. Multiple light intensity values are measured over a field of view which includes at least a portion of the area illuminated by the light source. A computer processing system is used to identifying a portion of the light intensity values associated with a reflective surface and analyze the portion of the light intensity values to determine at least one retroreflectivity value for that reflective surface.