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35 lines
1.3 KiB
Markdown
35 lines
1.3 KiB
Markdown
# OSM tag mapping
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This page is intended to give an overview of which OpenStreetMap(OSM) tags OTP uses to evaluate its
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walking and bicycling instructions. If a tag is not part of the documentation on this page
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then this tag mapper (profile) does not use it.
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The exception are access permissions and wheelchair accessibility tags like
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- `access=no`
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- `wheelchair=no`
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- `oneway=yes`
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These are identical for all mappers and not separately listed on this page.
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### Way properties
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Way properties set a way's permission and optionally influences its walk and bicycle safety factors.
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These factors determine how desirable an OSM way is when routing for cyclists and pedestrians.
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Lower safety values make an OSM way more desirable and higher values less desirable.
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<!-- INSERT: props -->
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### Safety mixins
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Mixins are selectors that have an effect on the bicycle and walk safety factors.
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Their safety values are multiplied with the base values from the selected way properties.
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Mixins can also add or remove permissions on an OSM way, which will be further overridden with
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explicitly set permission tags. If two mixins add and remove the same permission on the same way,
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the behavior is unspecified which usually indicates a tagging error on the way.
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Multiple mixins can apply to the same way and their effects compound.
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<!-- INSERT: mixins -->
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