Key:railway:signal:*
(Redirected from Key:railway:signal:prefix)
 Prefix railway:signal:*
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| Description |
|---|
Detailed tagging of railway signals beyond the existence of signals. 
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| Group: railways |
| Used on these elements |
    |
| Requires |
|
| Useful combination |
| Status: de facto |
| taginfo: railway:signal:* |
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This page describes a key prefix rather than a simple key.
Description
The value of this tag is a key prefix (or namespace) for country-specific values of all the railway:signal:* tags that describe the signal.
With this tagging scheme, the prefix is specified only once using this tag and implicitly prepended to any country-specific values, making the describing tags easier to read.
A namespace, like a prefix, is composed of a two-letter country code (ISO_3166-1) optionally followed by some country-specific values (e.g. DE-ESO, AT-V2, FR).
This tagging scheme is optional and does not replace the existing tagging scheme with prefixed values.
It is primarily used by OpenRailwayMap.
Examples
Without using the prefix tag
In Germany:
railway=signalref=51VArailway:signal:direction=forwardrailway:signal:position=rightrailway:signal:distant=DE-ESO:ksrailway:signal:distant:form=lightrailway:signal:distant:height=normalrailway:signal:distant:states=DE-ESO:ks1;DE-ESO:ks2
In Austria:
railway=signalref=H503railway:signal:direction=backwardrailway:signal:position=rightrailway:signal:main=AT-V2:hauptsignalrailway:signal:main:form=lightrailway:signal:main:states=AT-V2:halt;AT-V2:frei;AT-V2:frei_mit_60railway:signal:main:function=exit
Using the prefix tag
In Germany:
railway=signalref=51VArailway:signal:prefix=DE-ESOrailway:signal:direction=forwardrailway:signal:position=rightrailway:signal:distant=ksrailway:signal:distant:form=lightrailway:signal:distant:height=normalrailway:signal:distant:states=ks1;ks2
In Austria:
railway=signalref=H503railway:signal:prefix=AT-V2railway:signal:direction=backwardrailway:signal:position=rightrailway:signal:main=hauptsignalrailway:signal:main:form=lightrailway:signal:main:states=halt;frei;frei_mit_60railway:signal:main:function=exit