啥叫跟禁止U-turn没区别啊。你英语是音乐老师教的嘛? 实际上有没有这个牌子是完全一样的,这个牌子就是个提示。 就像很多路口有个牌子说left turn yield on solid circle green一样。 该州的driver's handbook: A green arrow means that you have a “protected” turning movement with no other conflicting traffic in the intersection except U-turn traffic that should yield to all other traffic entering the intersection.