The size must be as shown in part 7440.9920. Backing material for portable SMV emblems must have the same geometric shape as the emblem and may be slightly larger in order to provide a margin of not more than one-fourth inch.
The design standards and specifications for color and reflectivity are:
The fluorescent, dull black, and reflective material must show no appreciable discoloration, cracking, crazing, blistering, loss of durable bond, or dimensional change after exposure to the sun at an angle of 45 degrees to horizontal and facing south per ASTM Standard D1014, Method of Conducting Exterior Exposure Tests of Paints on Steel, for a test period of 12 months in southern Florida.
The backing material for portable SMV emblems must be 0.040 inch minimum thickness aluminum sheet, 0.08 inch or 2.0 millimeters minimum thickness rigid acrylonitrile butadiene styrene (ABS) plastic, 22 gauge (0.030 inch or 0.8 millimeter) minimum thickness mill-galvanized or coated sheet steel, or other material of equal strength, with the application surface clean and free of oil, grease, etc., so as to be receptive to a durable bond of the fluorescent and reflective materials. The backing material must be free of burrs and corners must be slightly rounded.
The manufacturer of SMV emblems shall supply certified test reports showing compliance with the design standards and specifications upon request by the commissioner of public safety.
Minn. R. agency 171, ch. 7440, pt. 7440.0400
Statutory Authority: MS s 169.522