This is the layer for labelling the highways. Only highways that are named
name=* and are long enough
to place text upon appear. The OSM roads are stitched together if they contain the same name
to have better label placement than having many small linestrings.
For motorways you should use the
ref field to label them while for other roads you should use
name:de if available, otherwise
name value of the highway.
ref tag of the motorway or its network.
name:en if available, otherwise
Length of the
ref field. Useful for having a shield icon as background for labeling motorways.
Distinguish between more and less important roads.