Minnesota Department of Transportation

511 Travel Info

Approved/Qualified Products

Reflective elements for pavement markings

Glass Beads

Product Manufacturer Approval Date
Ozark Type 1 Glass Beads Ozark Materials, LLC Ozark Type 1 Glass Beads Provisional Letter (PDF)
Standard Highway Safety Marking Spheres Potter's Industries 8/1/2003
Standard Reflex Beads Swarco Industries, Inc. 6/17/2016