Or. Rev. Stat. § 319.600
Except as provided in ORS 319.550, a user of fuel in a motor vehicle shall display an emblem in a conspicuous place on each motor vehicle in connection with which fuel is used. Each such emblem shall be issued without charge by the Department of Transportation upon application by a person holding an uncanceled or unrevoked user’s license and shall be displayed only upon the motor vehicle with respect to which it is issued.
[Amended by 1959 c.188 §6]