Hello mos_next_door, 

I was unaware that residential highway features are named streets in Yerevan. Is this noted on OSM Wiki anywhere? The current tagging in the area was a bit inconsistent. For example: https://www.openstreetmap.org/way/173489561 is residential but has no name and https://www.openstreetmap.org/way/449256583 is service but has a name. My intention for https://www.openstreetmap.org/way/174303420 and https://www.openstreetmap.org/way/214411508 was to unify the classifications and residential seemed appropriate. 

If the highway is not intended for general public use, I agree that the features would be appropriate as service. If you would prefer these roads to be service, I will defer to your edits. Thank you for the information and have a great day! 