Many years ago I had a driver's ed teacher who told me to always drive defensively not offensively. Having lived and driven in several major cities, I have found the advice to be sound but one which essentially everyone ignores. Speed limits cannot be considered in any way to be self-governance but no intelligent person could argue that traffic would flow more smoothly and be more safe without them. Beyond this, if totally self-governed, no one would pay taxes which build the highways to speed up and down.
And too, a Libertarian government is an enigma to self-governance. Who knows, there may be hundreds of millions of Americans who are Libertarian but who refuse to vote for any government. LOL!