

There isn’t a federal law on turn signal use that I can find and it’s left up to the individual states. Every law I looked at said you have to have a continuous signal before the turn and when turning into a different lane. I did not see any exceptions listed anywhere, including turn lanes.
When turning from a turn lane, to a different lane, that is a change of lane and therefore falls under the law. If you have any other evidence to the contrary or happen to live in a state that I didn’t check where that is an exception, I and the others here would love if you’d source that. If you can’t, then you’re just making shit up and should just take the “L”.
You conveniently left out the rest of the law…