Question Taillights are not required to be illuminated after dark. Answers True False Explanation A vehicle's headlights must be on from sunset to sunrise. Vehicles must also have two red taillights visible for 500 feet from behind. Only one taillight is needed for mopeds and motorcycles. Pass your DMV Written Test with flying colors Take me to the cheat sheet Illinois This questions appears in the following tests: Illinois Practice Test 2 Illinois Practice Test 8