I've always been fascinated by games that capture the fade of halogen/incandescent bulbs turning on and off and it really adds an aspect of realism. In 2014 a mod called 'more features mod' was able to add this to the game making the turn signals fade on and off (prior to vanilla system), rather than the current lights which all look like LEDs turning on and off instantly. Seeing as the vehicle lights haven't been touched much since the pre race update I would love to see this added when the lights and signals get remastered or updated. As a player who like to cruise around maps driving normally I like to admire the small details.
Same that's what i was suggesting a week ago. It would make the game more realistic with the fade on and off lights.