Minnesota Department of Transportation

511 Travel Info

Approved/Qualified Products

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Reflective elements for pavement markings

Temporary Raised Pavement Markers

TRPM usage information (PDF)

Type 1

Manufacturer Approval Date Provisional Letter
8/1/2003 -
8/1/2003 -
8/1/2003 -
8/1/2003 -
Temporary Raised Pavement Markers

Type 2

Manufacturer Approval Date Provisional Letter
8/1/2003 -
Temporary Raised Pavement Markers

Type 3

Manufacturer Approval Date Provisional Letter
Ray-O-Lite Model Round Shoulder 8800 Series Pac-Tec, Inc. 8/1/2003 -
Temporary Raised Pavement Markers

Type 4

Manufacturer Approval Date Provisional Letter
Davidson Model TRPM Davidson Plastics 8/1/2003 -
Glass Beads

Product

Manufacturer Approval Date Provisional Letter
8/1/2003 -
Standard Highway Safety Marking Spheres Potter's Industries 8/1/2003 -
Standard Reflex Beads Swarco Industries, Inc. Provisional until 12/31/2015 attached