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Public-images-osm logo.svg usage = test
ULTra PRT cardiff track aerial.jpg
Specifies that a railway is a test line: tracks used for testing of new vehicles or new rail transport technologies. Show/edit corresponding data item.
Group: properties
Used on these elements
should not be used on nodesmay be used on waysshould not be used on areasshould not be used on relations (except multipolygon relations)
Useful combination
See also
Status: in use

The tag usage=test is used together with railway=* to map a test line: railway tracks used for testing of new vehicles or new rail transport technologies. Most often used with railway=rail and railway=narrow_gauge.

service=* is added for sidings, crossovers, and yard tracks: Siding-tagging.svg

Other values of usage=*:

Tag Comment
usage=main Main line, presumably heavy traffic, often double tracked and/or electrified, may be high speed.
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=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