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speed_camera
==============
< img src = 'https://mapcomplete.osm.be/square:white;./assets/layers/speed_camera/speed_camera.svg' height = "100px" >
Layer showing speed cameras
- This layer is shown at zoomlevel **12** and higher
- This layer will automatically load [maxspeed ](./maxspeed.md ) into the layout as it depends on it: a preset snaps to this layer (presets[0])
#### Themes using this layer
- [maxspeed ](https://mapcomplete.osm.be/maxspeed )
- [personal ](https://mapcomplete.osm.be/personal )
Basic tags for this layer
---------------------------
Elements must have the all of following tags to be shown on this layer:
- < a href = 'https://wiki.openstreetmap.org/wiki/Key:highway' target = '_blank' > highway</ a > =< a href = 'https://wiki.openstreetmap.org/wiki/Tag:highway%3Dspeed_camera' target = '_blank' > speed_camera</ a >
[Execute on overpass ](http://overpass-turbo.eu/?Q=%5Bout%3Ajson%5D%5Btimeout%3A90%5D%3B(%20%20%20%20nwr%5B%22highway%22%3D%22speed_camera%22%5D(%7B%7Bbbox%7D%7D )%3B%0A)%3Bout%20body%3B%3E%3Bout%20skel%20qt%3B)
Supported attributes
----------------------
Warning:
this quick overview is incomplete
attribute | type | values which are supported by this layer
----------- | ------ | ------------------------------------------
[<img src='https://mapcomplete.osm.be/assets/svg/statistics.svg' height='18px'> ](https://taginfo.openstreetmap.org/keys/maxspeed#values ) [maxspeed ](https://wiki.openstreetmap.org/wiki/Key:maxspeed ) | [pnat ](../SpecialInputElements.md#pnat ) |
### maxspeed
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The question is *What is the maximum speed allowed at this speed camera?*
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This rendering asks information about the property [maxspeed ](https://wiki.openstreetmap.org/wiki/Key:maxspeed )
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This is rendered with `The maximum speed allowed is {canonical(maxspeed)}`
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### ref
This tagrendering has no question and is thus read-only
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This tagrendering is only visible in the popup if the following condition is met: `ref~.+`
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This document is autogenerated from [assets/layers/speed_camera/speed_camera.json ](https://github.com/pietervdvn/MapComplete/blob/develop/assets/layers/speed_camera/speed_camera.json )