I have now checked in a village I know. The road directory lists roads without names with the settlement name. The best indication is to look at adresses of nearby houses, they will have addr:place instead of addr:street.

In iD you can set the background layer "basemap.at", which will give you road names. These names are not 100% accurate, as in this example. Also, they may deviate from the street signs and there can be a fair amount of confusion in areas where streets are being renamed (which happens as settlements grow).

Best practice I can think of is to tag such roads with noname=yes and no name. In any case, I would recommend to be very careful when editing names. Better inform the community, even we struggle at times when names are only known to locals.