# helsinki

`https://hel.fi/models/helsinki/helsinki/views/wylttuwlfud5yxnwsersbiom4xuhd7jm`

## TrafficSignalJunction

One junction or crossing of the city with traffic lights or warning lights, where it is, the streets that meet there, its installation number and whether it is in service or still being built, as the Smart Data Model extension TrafficSignalJunction \(PointOfInterest base\).

| Slot | Range | Kind | Required | Multivalued | Description |
|---|---|---|---|---|---|
| location | string | GeoProperty | no | no | Where the entity is, as GeoJSON geometry. |
| name | string | LanguageProperty | no | no | The name, per language. |
| signalKind | TrafficSignalKind | Property | yes | no | What the junction's signals are: full traffic lights, or warning lights that only flash to warn of a crossing, a tram or a fire station exit. |
| junctionNumber | string | Property | no | no | The city's own number of the signal installation, as its controller cabinet shows it. |
| status | TrafficSignalStatus | Property | yes | no | inService, or underConstruction while the city still builds the signals \(the layer's Rakenteilla\). |
| description | string | LanguageProperty | no | no | A short description, per language. |
| dateModified | datetime | Property | no | no | When the publisher last changed the record, or the station last reported. |
| dataProvider | string | Property | no | no | Who publishes the data the entity was read from, as an application credits it beside the licence \(CC BY 4.0 for every feed of this space\). |
| source | uri | Property | no | no | The open-data service the entity was read from. |

## TrafficSignalKind (enum)

What signals a TrafficSignalJunction has.

- trafficLights: Traffic lights that control the junction \(liikennevalot\).
- warningLights: Warning lights that flash before a crossing, a tram line or a fire station exit \(varoitusvalot\).

## TrafficSignalStatus (enum)

Whether a TrafficSignalJunction's signals work yet.

- inService: The signals are in service.
- underConstruction: The city is still building the signals \(rakenteilla\).