Hi, you've changed a number of roads that I changed from service to residential back to service. This was not correct; I changed them to residential based on City of Waterbury GIS that shows them as  municipally owned on city ROWs, they are publicly accessible, and they have names. These are the criteria for highway=residential. It doesn't matter if they 'feel like driveways.' They are allowable for public use, even if the city or town hasn't built them up to standard highway width or construction. 

Please refer to:

https://wiki.openstreetmap.org/wiki/Connecticut/Highway_classification