[Tagging] Linking Sidewalks to Highways

[Martin Koppenhoefer]

isn’t this all centered on motorists‘ point of view? 
What do people think about seeing it from other perspectives, e.g. highway=cycleway and adding tags like primary=track (means there is an implied primary road, physically separated, which is running along this cycleway).
Can also be done for sidewalks:
highway=footway
footway=sidewalk
name=Highstreet
has_road=primary

is there interest in developing such complementary tagging ?

Cheers Martin 

;-)