The Department of Transportation shall adopt rules for slow-moving vehicle emblems for purposes of ORS 815.110 and 815.115. The rules adopted under this section shall:
(1) Require a slow-moving vehicle emblem that is reflectorized or fluorescent and that is of a standard type.
(2) Establish design and mounting requirements that the emblem must meet.
(3) Conform to the nationally accepted standards for slow-moving vehicle emblems. [1983 c.338 §444]