Interesting. In Russia roads are entirely covered by thick layer of hardened snow for 4+ months (intercity often more, especially up north) so I'm not even sure markings are normative but signs have to be visible. They tell you changes in the number of lanes and directions etc (something like https://www.drom.ru/pdd/pdd/sign_5_15_2/). At first it was unusual to see such reliance on road markings in other countries