You’d be surprised by how widely applicable it is, it works for virtually any road. Small city roads, highways, even residential streets.
There also isn’t a maximum number of lanes for this effect (well, there technically is, but it’s too large to be feasible) because cars are an extremely inefficient way of transportation, so they take up a lot of space.
Roads also become increasingly more expensive with each extra lane added, to the point where it becomes economically impossible to keep adding lanes. You also need to demolish buildings if the road was already too close to them. And the cost of the extra lane isn’t a one off, it also generates a running cost for repairs and inspections.
That money is better spent on making viable alternatives to cars, which actually will help traffic or even fix it.











DNS is such a terrible thing, because, despite being amazing at what it does, and beautifully complex at times, it’s still a massively centralized system that basically controls the internet. Of course it’s based in the US.
It’s also the reason why domain names cost significant money, and they even sell TLDs for insane prices that only megacorporations can afford. They can decide what TLDs get to exist, and ultimately, they have the power to ban domains, whole zones, or even TLDs. They essentially have the power to dismantle the internet as most people know it.
There are some alternative projects that aim to replace ICANN’s root servers, but almost nobody has them set up (and the alternative root servers aren’t even considered “legal” or part of the DNS system by any provider). Which leads to the alternative TLDs being almost useless. It’s still a fun thing to set up, though.