The DeviceFeed object is the root (highest level) object of a WZDx Device Feed. There is one DeviceFeed object per feed GeoJSON document. The DeviceFeed is a GeoJSON FeatureCollection object.
The DeviceFeed contains information (location, status, live data) about field devices deployed on the roadway in work zones.
| Name | Type | Description | Conformance | Notes |
|---|---|---|---|---|
feed_info |
FeedInfo | Information about the data feed. | Required | This is a WZDx-specific foreign member and is not part of the GeoJSON specification. |
type |
String; "FeatureCollection" |
The GeoJSON object type. For WZDx, this must be the string FeatureCollection. |
Required | This is a GeoJSON property. |
features |
Array; [FieldDeviceFeature] | An array of GeoJSON Feature objects which each represent a field device deployed in a work zone. | Required | This is a GeoJSON property. |
bbox |
GeoJSON Bounding Box | Information on the coordinate range for all FieldDeviceFeatures in the feed. The value must be an array of length 2n where n is the number of dimensions represented in the contained geometries, with all axes of the most southwesterly point followed by all axes of the more northeasterly point. The axes order of a bbox follows the axes order of geometries. |
Optional | This is a GeoJSON property. |
DeviceFeed GeoJSON document (one DeviceFeed object per file).