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Public-images-osm logo.svg usage = main
Krakow Nowa Huta Polnoc train station, Splawy street, Nowa Huta, Krakow, Poland.jpg
Specifies that a railway is a main line, presumably heavy traffic, often double tracked and/or electrified, may be high speed. Edit or translate this description.
Group: Railways
Used on these elements
should not be used on nodesmay be used on waysshould not be used on areasshould not be used on relations
See also
Status: in use

The tag usage=main is used together with railway=* to map a main line: a railway with higher traffic and higher speed than branch lines, often double tracked and/or electrified, may be high speed, usually longer than a branch line.

Often, main lines are described as such in the official name, however, sometimes rail is named "XYZ Main Line" even though it is more appropriately tagged usage=branch.

This tag can be used for several kinds of railway, but it is most often used with railway=rail and railway=narrow_gauge.

Inside a railway station area, use usage=main only for the main tracks (not for siding, yard tracks etc.). That also applies for crossover or overtaking tracks outside of the railway stations, which are mapped with service=*


Other values of usage=*:

Tag Comment
usage=branch Branch line, less traffic and lower speed than main lines, often single tracked and/or not electrified, may be constructed to lower specifications than main line. May connect a place to a mainline or serve to connect mainlines, typically a few dozen miles in length.
usage=industrial Tracks in private use that serve only freight transport inside ports, industrial complexes or mining areas, and for connecting these to the public network
usage=military Tracks for military use, mainly on military areas, munitions storage areas or connections to the public railroad network.
usage=test Tracks used for testing of new vehicles or new rail transport technologies.
usage=tourism Tracks for tourists, around museums, historic or "heritage" trains, often only on weekends and holidays and/or seasonally, most preserved railways (railway=preserved and railway:preserved=yes)

See also