Hi!
thanks for specifying the access more restrictively.  When mapping in this area, I was not sure which one of the then existing tags motor_vehicle=designated or vehicle=no takes precedence.
  The general situation is pretty clear (taxi lane only for taxis, bus lane only for (public) busses).  However there might be exceptions:
 mapillary images from 2015 show a sign listing several allowed services, in addition to busses of public transport: "Ausgenommen Linienbusse, Fahrzeuge des diplomatischen Corps, [disabled symbol], Fahrzeuge der Ver- und Entsorgung und Kofferkulitransporte" - which translates to "except public busses,
 vehicles of diplomatic corps, disabled, service vehicles for supply and disposal, transport of luggage trolleys", see 
https://www.mapillary.com/app/?pKey=2975928129361427&focus=photo&lat=48.120823865788&lng=16.563354302139032&z=1.5&x=0.4829595139575155&y=0.6135187761866085&zoom=0

I cannot remember if that sign still exists 9 years later (and I have meanwhile deleted the photos taken otg), but this rather complex situation may have contributed to me not having edited the tagging much further.