I wish the default @openstreetmap or platforms such as @cartes_app or @CoMaps could implement something like this.
Sadly, the default trend, as imposed by Google/Apple maps, is that maps are designed for car users. So you get roads that are more visible if they have more lanes, if they allow cars to drive faster. Highways are big and red. Urban roads are orange or yellow if they allow for more traffic. Bike lanes? Not shown by default.