The Relationship object is used to identify both sequential and hierarchical relationships between a road events and other entities. For example, a relationship can be used to link multiple road events to a common "parent", such as a project or phase, or identify a sequence of road events that make up a larger work zone.
| Name | Type | Description | Conformance | Notes |
|---|---|---|---|---|
first |
Array; [String] | Indicates the first (can be multiple) road event in a sequence of road events. All values in this array should be a road event ID—they should match the id property on a RoadEventFeature within the same WZDx GeoJSON document. |
Optional | |
next |
Array; [String] | Indicates the next (can be multiple) road event in a sequence of road events. All values in this array should be a road event ID—they should match the id property on a RoadEventFeature within the same WZDx GeoJSON document. |
Optional | |
parents |
Array; [String] | Indicates entities that the road event with this relationship is a part of, such as a work zone project or phase. Values can but do not have to correspond to a WZDx entity. | Optional | |
children |
Array; [String] | Indicates entities that are part of the road event with this relationship, such as a detour or piece of equipment. Values can but do not have to correspond to a WZDx entity. | Optional |
| Property | Object |
|---|---|
relationship |
RoadEvent |
The value of all elements in the Relationship's first or next properties must match the value of the id property of a RoadEventFeature that is included in the same WZDx GeoJSON document.