Subpart 1.
Dimensional
requirements.
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.
Subp. 2.
Color
and reflectivity.
The design standards and specifications for color and
reflectivity are:
A. The
spectrophotometric color values of the yellow-orange fluorescent material must
have a dominant wave length of 602-610 millimicrons and a purity of 84 percent
before the exposure test specified in subpart
3. The dominant wave length
of the fluorescent material after the exposure test must not change more than
ten percent.
B. The reflective
material used on SMV and alternate SMV emblems must conform to federal
specification L-S-300C, Table II, "Specific Intensity per unit Area (SIA):
Minimum Reflectivity 1 Sheeting and Tape," of March 20, 1979, approved by the
Commissioner, Federal Supply Service, General Services Administration. Table II
is incorporated by reference, is not subject to frequent change, and is located
and available for copying at the Minnesota State Law Library, 25 Rev. Dr.
Martin Luther King Jr. Blvd., Saint Paul, Minnesota 55155. Federal
Specification L-S-300C is available from the General Services Administration,
Business Service Center, Chicago, Illinois 60604.
C. The size and shape of SMV and alternate
SMV emblems must comply with parts
7440.9920 and
7440.9930, respectively.
Subp. 3.
Exposure.
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.
Subp. 4.
Backing material.
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.
Subp. 5.
Reports.
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.
