Meh, looks like half the roads in Canada.
Road quality is going to be (semi) directly proportional to climate. Significant temperature fluctuations (especially when they go below freezing) and rain/snow cause major damage to road surfaces, not to mention frost heave in places with more than surface frosts.
Mountain roads and roads in places like much of Canada and the North east USA, colder parts of Eastern Europe and Russia are going to take a pounding, far more so than roads through warm, dry deserts (the UAE/SW USA). Places with mixed weather like the UK have a reasonable chance of keeping roads in good condition, but then population density and use make a major impact.
In my experience major roads can usually be better in poorer countries, because they’re newer and used less (alongside usually having more benign climates), but on the flip side the side roads are usually (a lot) worse. More developed countries have more consistent road quality as the state is usually paying for all the roads, whereas the major roads in many poorer countries are in part funded by other countries/organizations (like the EU).
Spain is a reasonable example. It’s got a benign climate in much of it, and most of the main roads are beautiful. Many side roads not so much, with a lot more chance of hitting gravel roads than the UK for example. Look at more extreme examples, Romania is one, and going to even more extreme examples, many African countries have beautiful main roads, but as soon as you leave that main road (paid for by international aid and development funds in most cases) you’re down dirt alley.
Edit: And in response to your suggestion of a universal standard for road, that just wouldn’t work.
Roads are constructed differently in different parts of the world for a reason. Take asphalt for example. It’s composition is very different in a hot area of the world like the UAE/Australia than that used in the UK and parts of Europe. Not just because of local availability of materials (you don’t want to be carting hundreds of tones of granite around the world when there’s a metamorphic rock or limestone that’s just as good nearby for example) but because it needs cope with different environments. Asphalt used in the UK and Europe would melt and buckle in temperatures as high as those seen in the desert, but equally asphalt used in hot deserts wouldn’t last anywhere as long as asphalt currently used in the UK, which is designed for colder climates.
That’s just the surface layer. Again, discounting access to materials road construction in a hot, dry desert needs to be different to road construction in an area with a three foot deep freeze level, or in an area with significant rainfall. Realistically each country, and each project needs to be considered as separate entities because of the variability in climate, environment, load and what it’s being laid on.