service=yard is widely considered as to be used to tag tracks in "complex series of railroad tracks for storing, sorting, or loading/unloading, railroad cars and/or locomotives".
But Wiki currently defines service=yard to be used only for marshaling yards ( http://wiki.openstreetmap.org/wiki/Tag:service%3Dyard ) - narrower term. Marshaling yard is a type/part of railway yard - used to separate railroad freight cars on to one of several tracks Maybe that was initial tagging and it would probably stay this way with self-documenting tag (service=marshaling_yard) but as tag was much more general than its definition it is now used to tag any kind of railway yard (up to and including tram depots). I propose to change on http://wiki.openstreetmap.org/wiki/Tag:service%3Dyard "marshaling yard" to "railway yard" to document current tagging. Overpass query, starts centered on tram depot with service=yard: http://overpass-turbo.eu/s/9p8 _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging