I learned a long time ago, from riding my regular mountain bike around Phoenix, that it doesn't matter what the rules are and that you will NEVER teach other drivers to watch out for your invisible bicycle. I ride the sidewalks near busy roads, and slow down at the T sections, and still kick myself for ever going in front of a car, even if they wave me on, if there's traffic on the main road. I'm not in such a hurry that I can't have fun on the sidewalks. I'm on a fun bicycle, and not a part of the rat race of the main road. Grant it Phoenix has a lot of available sidewalks, where other places may not.