I tend to ignore "legal" threads myself
Things are locale dependant anyway and it gets tiresome explaining to "armchair cops" who think they know what is "best" for the world. Not many of those here today.
I will look at my local/state/federal regulations and If I don't find something specifically prohibiting what I want to do then it is fair game. Even if it is called out, I do have a "that is way out of touch and unenforceable" filter.
You are of course always responsible for the safe operation of your vehicle, and make sure you can control it with the engine off (lose power steering and brakes if you had them, and don't lock the steering column (see "kill switch")) or for whatever mod/technique you are trying. I have practised in deserted areas prior to joining traffic, and continue to test my ability to stop and turn without power assist when traffic is light.
I also don't talk on the cellphone while driving or engage in other distractions. I do take my role and responsibility to be a safe driver very seriously.