Anyone Successfully Fought or Reduced a "roll through a stop sign" ticket?

There is a no u turn sign at an intersection by a local walmart. It is just like every other spot in town where a u is legal except there is a sign.

They run motorcycle cop stings there all the time. Like shooting fish in a barrel.

I wonder if they didn't post the sign just to make money. There are two righf hand turn lanes adjacent that are no turn on red so that might be the reason, but I never make a u there.