Question Posters, signs, and stickers on the windshield and windows: Answers Are a fun way to personalize your vehicle. Are permitted if they allow the driver at least a little visibility. Are prohibited, unless they are otherwise specifically required by law. Explanation Obstructions on windows are prohibited. No sign, poster, or sticker may be placed on any window of any vehicle, unless it is specifically required by law to be on the vehicle's window. Pass your DMV Written Test with flying colors Take me to the cheat sheet Kentucky This questions appears in the following tests: Kentucky Practice Test 36 Kentucky Practice Test 32