Tag:usage=test
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 usage = test
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Specifies that a railway is a test line: tracks used for testing of new vehicles or new rail transport technologies. 
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| Group: properties |
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| Status: in use |
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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:
Other values of usage=*:
| Tag | Comment |
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| 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) |