Cs:Key:hazard
 hazard
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A hazardous or dangerous feature. 
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| Skupina: hazards |
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Status: schváleno
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Nebezpečí je potencionální zdroj újmy na zdraví, života, majetku nebo jakéhokoliv zájmu. Nebezpečí zahrnuje přírodní vlivy, taktéž i lidského původu.
Hodnoty
Následující tabulka označuje Taggování různorodých typů nabezpečí.
Zóna Nebezpečí
Tato tabulka označuje různé hodnoty Nebezpečí=* pro oblasti otaggované jako plocha=nebezpečí.
Schválené hodnoty
Further ad-hoc values
Dopravní nebezpečí
Následující hodnoty hazard=* jsou použity k označení úseků cest které jsou označeny dopravní značkou nebezpečí na cestě.
Pokud nebezpečí hrozí pouze podél jednoho směru jízdy na cestě tak jej označ následovně hazard:forward=* (dopředu) nebo hazard:backward=* (zpátky), dále na Forward & backward, left & right (dopředu a zpátky, vlevo a vpravo).
Approved values
Further ad-hoc values
Tagging guidelines
The hazard=* tag is intended to tag hazards that are explicitly declared by posted signage and/or government declaration. Consistent with OSM conventions, mappers should only tag hazard features that are permanent or recurring, rather than temporary.
Roadside signage
For tagging roadside signs, there are multiple possible approaches:
- Place a node adjacent to the roadway, and tag it with
traffic_sign=hazardand the appropriatehazard=*tag. - Tag a node in the roadway, with
traffic_sign=hazard+hazard=*at the location adjacent to where the sign is located. If known, mappers might instead usetraffic_sign=*with the specific traffic sign ID, also combined withhazard=*. - For hazardous curves, apply
hazard=curveto the
starting from the signed location and extending through the curve. - For hazards that occur along a defined stretch of roadway, apply the appropriate
hazard=*to the representing the portion of the road for which the hazard applies. This should only be done where there is adequate data available to apply the hazard tagging to a stretch of roadway, such as in cases where the start and end of the hazard are signed, or when a sign indicates the oncoming distance over which the hazard occurs. - Some combination of the above, in which both the sign and the actual hazard are tagged.
Verifiability guidelines
As with all objects and tags in the OSM database, verifiability is a prime concern. Mappers should not tag subjective hazard features that cannot be confirmed by other mappers. Hazards present an especially difficult case, since normal methods of verification (visiting the site in person) may present danger. However, there are still resources available. Examples of how hazards can be verified include:
- Hazards to drivers and pedestrians indicated by signage, including
roadside signs. - Hazards to health and safety indicated by fences or other barriers with posted signs.
- Hazardous areas as demarcated by reliable and authoritative sources.
- For example, government maps or GIS systems.
Software support
OSMAnd warns when the route traverses certain hazards.
OSRM does not yet support this key. [1]
See also
flood_prone=*– Indicates that the feature is likely to flood after very heavy rain.sign=hazard– a hazard sign- Forward & backward, left & right – Used to describe position or direction relative to a way