The traffic in the blackout areas of Manhattan is lawless in the most literal sense: the traffic lights aren’t working, so the law cannot be applied as usual. But “lawless” doesn’t seem to be a fitting description; the driving seems better-behaved than usual. We’re so used to seeing people act under a system of government rules that it’s easy to assume that without the rules, everything would descend into chaos. But perhaps free people are generally capable of acting decently on their own. Of course, that’s never going to be universal; but then, people break the law too. In fact, a dense set of rules tempts people to see how close to (or how far across) the borderline of legality they can go without being penalized. In the absence of governmental laws, people might focus more on other kinds of laws: social norms and ethics.
Actually, there’s a fair amount of research indicating that too many traffic rules can make us less safe, by causing drivers to think and communicate less.