U-Turn on a Red Light Not Allowed

[Davidjess]

My question involves a traffic ticket from the state of: Az
Let's be clear first about what I know. A u-turn on red light is always illegal. The only turns you can make on a red light have several requirements: stop first, yield, turn from rightmost lane to rightmost lane or leftmost to leftmost.

People who support u-turns on red lights are using the language badly. However, that is part of the problem. So my questions are about the officer interpretations and laws that have come up centered around the confusion.

Is it legal to do a u-turn if a no u-turn sign appears in the intersection in front of you?
I say no if you enter that intersection, and no if you pass the sign, but not prohibited by the sign otherwise.

Is it legal to cross a double yellow line?
I say yes.

Is it legal to cross 2 double yellow lines? I do not know, but I would guess yes.

Is it legal to cross the stop line or enter the crosswalk.
I say yes, yielding and waiting for clear. Also, I saw a law in some state specifically prohibiting this. It said you have to stop before the stop line and then cannot cross that stop line (for ANY) reason until the lite turns green (they might have other exceptions like turns but not u-turns).

Is it legal to cross a raised island? I do not know. I doubt it. However, I did it often anyway in an ambulance, and we are supposed to follow all traffic laws.

[Mr. Knowitall]

You can look up Arizona's statutes here, and see what they have to say about your various hypotheticals and suppositions.

[Davidjess]

I am pretty clear on the statutes that I know, such as not entering an intersection on a red light. If necessary, I can find them and post them for clarity for other readers. However, what I am worried about is statutes or legal theory or interpretations that I do NOT know. I do not know of any statute prohibiting any of the u-turns that I mentioned, except for the ones that I stated ate illegal, which is going thru a red light, into an intersection wit a no turn sign or passing a no turn sign. Do YOU know of any statutes prohibiting those other u-turn cases?