A Road Junction feature is a collection of Road Node features that share the same road junction name or number. The collection of Road Nodes will include all Road Nodes that constitute part of a 'slip road' or other link between two or more crossing Road features. A Road Node could be referenced by multiple Road Junction features.
Motorway junctions will be populated completely; other junctions are being supplied as data is improved for future releases.
The earliest date on which you can request a one-off snapshot of a date in the past for data in this feature type is 29 September 2022.
The following sub-sections provide details about the attributes included with this feature type, their data types in the different output formats, and other important metadata about them.
Primary identifier for the feature. The OSID is a Globally Unique Identifier (GUID) and requires no centralised authority to ensure uniqueness. Note that the same OSID can occur in more than one feature type when a single feature is represented multiple times in the OS NGD.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: false
Max Length: 36
OS NGD API – Features Filterable: Yes
OS Select+Build Filterable: No
Data Schema Version: 1.0
Topographic Identifier (TOID) of the feature, as published in the OS MasterMap suite of products.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: true
Max Length: 20
OS NGD API – Features Filterable: Yes
OS Select+Build Filterable: No
Data Schema Version: 1.0
Date when the version was last updated.
Data Types: String (GeoJSON), Date (GPKG), Date (CSV)
Nullable: false
OS NGD API – Features Filterable: No
OS Select+Build Filterable: No
Data Schema Version: 1.0
The date this version of the feature became the latest version.
Data Types: String (GeoJSON), DateTime (GPKG), DateTime (CSV)
Nullable: false
OS NGD API – Features Filterable: No
OS Select+Build Filterable: No
Data Schema Version: 1.0
The date this version of the feature was superseded by an update or ceased to exist.
Data Types: String (GeoJSON), DateTime (GPKG), DateTime (CSV)
Nullable: true
OS NGD API – Features Filterable: No
OS Select+Build Filterable: No
Data Schema Version: 1.0
The type of change that generated a new version of the feature.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: false
Code List Name: changetypevalue
Max Length: 50
OS NGD API – Features Filterable: Yes
OS Select+Build Filterable: No
Data Schema Version: 1.0
Geometry for the feature.
Data Types: Geometry (GeoJSON), Geometry (GPKG), WKT (CSV)
Nullable: false
OS NGD API – Features Filterable: No
OS Select+Build Filterable: No
Data Schema Version: 1.0
Geometry Type: MultiPoint
The OS NGD theme to which this feature belongs.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: false
Code List Name: themevalue
Max Length: 40
OS NGD API – Features Filterable: No
OS Select+Build Filterable: No
Data Schema Version: 1.0
A single descriptive value intended for a quick understanding of what the feature represents.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: false
Code List Name: junctiontypedescriptionvalue
Max Length: 26
OS NGD API – Features Filterable: Yes
OS Select+Build Filterable: Yes
Data Schema Version: 1.0
Name assigned to identify the feature.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: false
Max Length: 254
OS NGD API – Features Filterable: Yes
OS Select+Build Filterable: Yes
Data Schema Version: 1.0
The language of name1, provided as a 3-digit ISO 639-2 code ('eng, 'cym', 'gla').
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: true
Code List Name: languagevalue
Max Length: 3
OS NGD API – Features Filterable: No
OS Select+Build Filterable: No
Data Schema Version: 1.0
The alternative language name assigned to identify the feature.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: true
Max Length: 254
OS NGD API – Features Filterable: Yes
OS Select+Build Filterable: Yes
Data Schema Version: 1.0
The language of name2, provided as a 3-digit ISO 639-2 code ('eng, 'cym', 'gla').
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: true
Code List Name: languagevalue
Max Length: 3
OS NGD API – Features Filterable: No
OS Select+Build Filterable: No
Data Schema Version: 1.0
The official road number assigned by the appropriate authority, for example, M6.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: true
Max Length: 10
OS NGD API – Features Filterable: Yes
OS Select+Build Filterable: Yes
Data Schema Version: 1.0
The number of the junction, for example, 6.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: true
Max Length: 10
OS NGD API – Features Filterable: Yes
OS Select+Build Filterable: Yes
Data Schema Version: 1.0
A cross reference table mapping Road Junction to Road Node. The following sub-sections provide details about the attributes included in this cross reference table, their data types in the different output formats, and other important metadata about them.
The identifier of the Road Node feature.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: false
Max Length: 36
OS NGD API – Features Filterable: No
OS Select+Build Filterable: No
Data Schema Version: 1.0
The identifier for the Road Junction feature.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: false
Max Length: 36
OS NGD API – Features Filterable: No
OS Select+Build Filterable: No
Data Schema Version: 1.0
The date this version of the feature entered the OS National Geographic Database.
Data Types: String (GeoJSON), Date (GPKG), Date (CSV)
Nullable: true
OS NGD API – Features Filterable: No
OS Select+Build Filterable: No
Data Schema Version: 1.0