speed_camera
==============
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:
- highway=speed_camera
[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
----------- | ------ | ------------------------------------------
[](https://taginfo.openstreetmap.org/keys/maxspeed#values) [maxspeed](https://wiki.openstreetmap.org/wiki/Key:maxspeed) | [pnat](../SpecialInputElements.md#pnat) |
### maxspeed
The question is What is the maximum speed allowed at this speed camera?
This rendering asks information about the property [maxspeed](https://wiki.openstreetmap.org/wiki/Key:maxspeed)
This is rendered with The maximum speed allowed is {canonical(maxspeed)}
### ref
This tagrendering has no question and is thus read-only
Only visible if `ref~.+` is shown
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)