双黄线可以U-turn

You may legally make a U-turn: Across a double yellow line, as long as it is safe and there are no signs prohibiting it. No doing that across a triple yellow line though.Ohio DMV: U-Turns

https://www.shmoop.com/drivers-ed/ohio/u-turns.html#:~:text=You%20may%20legally%20make%20a,a%20triple%20yellow%20line%20though.