In Russia, some segments of major highways are of mediocre quality:
Russia road M53 / Baikal Highway, near Taishet. Source: Wikimedia
Russian Trans-Siberian highway near Cheremshanka, Krasnoyarsk Kray. Source. (NB: Old photo; this section of road has since been surfaced with tarmac)
For planning purposes it can be useful to know if roads have tarmac or not. Even better is to know the quality of the tarmac. Are there any maps for Russia that show now only where the highways are, but also contain information about the road surface?