

There has been some confusion about this question: https://www.thewisedrive.com/turn-signals-in-dedicated-turn-lanes/ https://www.thewisedrive.com/yes-you-have-to-use-your-turn-signal/ https://www.clickorlando.com/news/local/2023/12/26/watch-live-trooper-steve-explains-whether-you-need-to-use-turn-signals-in-turn-only-lanes/
I think the idea of a “direct course” is useful:
I do pay extra attention to giving a signal when I intend to make a U-turn rather than a typical left turn.
Having a mistake in this situation makes it less clear whether other messages are legitimate or not, so we might see more cases like those described around https://www.yahoo.com/news/black-people-receiving-racist-text-012451742.html