Nothing I see is marked for off road use only...What exactly do you mean would be marked? the FloriDUH statute reads..."...and in such manner as to prevent the plates from swinging, and all letters, numerals, printing, writing, the registration decal, and the alphanumeric designation shall be clear and distinct and free from defacement, mutilation, grease, and other obscuring matter, so that they will be plainly visible and legible at all times 100 feet from the rear or front.... Do not have anything obstructed, can be visible 100 + feet and toll cameras..