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RoadLink

The RoadLink feature is a generalised representation of the road network alignment. RoadLink features are split in the following circumstances:

  • Where the classification changes.

  • Where the name changes (or ceases to apply).

Where there is a junction or roundabout at the same physical level.

The following list outlines the attributes a RoadLink feature can have, and details the definition, data type, length (where applicable), and multiplicity of each of these attributes.

RoadLink attributes

A feature which represents a part or all of a named or numbered road.

id

Unique identifier. For RoadLink this is a GUID, which is not persistent.

  • Attribute name: id (GML), identifier (ESRI Shapefile), id (GeoPackage), id (VectorTile)

  • Type: CharacterString

  • Length: 38

  • Multiplicity: [1]

centrelineGeometry

The geometry that represents the centreline of the link.

  • Attribute name: centrelineGeometry

  • Type: GM_Curve

  • Multiplicity: [1]

fictitious

Indicator that the centreline geometry of the link is a straight line with no intermediate control points – unless the straight line represents the geography in the resolution of the data set appropriately.

  • Attribute name: fictitious (GML), fictitious (ESRI Shapefile), fictitious (GeoPackage), Not provided (VectorTile)

  • Type: Boolean

  • Length: 5

  • Multiplicity: [1]

roadClassification

Road classification uses a common system of route numbering, which is centrally administered for England and Wales by the Department for Transport. In all other respects, roads classification is a devolved matter outside of England.

  • Attribute name: roadClassification (GML), class (ESRI Shapefile), road_classification (GeoPackage), road_classification (VectorTile)

  • Type: RoadClassificationValue

  • Length: 22

  • Multiplicity: [1]

roadFunction

A alternative classification of the Road based on its usage.

  • Attribute name: roadFunction

  • Type: RoadFunctionValue

  • Length: 30

  • Multiplicity: [1]

formOfWay

A description of the RoadLink based on its form or function.

  • Attribute name: formOfWay

  • Type: FormOfWayValue

  • Length: 50

  • Multiplicity: [1]

roadClassificationNumber

The official road number assigned by the appropriate authority. Note: This includes at least one letter. For example, ‘A329(M)’.

  • Attribute name: roadClassificationNumber

  • Type: CharacterString

  • Length: 10

  • Multiplicity: [0..1]

name1

The name of the RoadLink. Note 1: Where a road has a name in more than one language, this attribute will be the Welsh or Gaelic version. Note 2: Where a feature has more than one name, the language of each name is provided as a three-digit ISO 639-2 code ('eng', 'cym', 'gla').

  • Attribute name: name1

  • Type: LocalisedCharacterString

  • Length: 150

  • Multiplicity: [0..1]

name2

The alternative name of the RoadLink, if any. Note 1: Where a road has a name in more than one language, this attribute will be the English version. Note 2: Where a feature has more than one name, the language of each name is provided as a three-digit ISO 639-2 code ('eng', 'cym', 'gla').

  • Attribute name: name2

  • Type: LocalisedCharacterString

  • Length: 150

  • Multiplicity: [0..1]

roadStructure

Identifies if this section of road passes through or over a physical structure, such as a tunnel or bridge.

  • Attribute name: roadStructure

  • Type: RoadStructureValue

  • Length: 14

  • Multiplicity: [0..1]

length

The calculated length of the RoadLink in metres.

  • Attribute name: length

  • Type: Measure

  • Length: 10

  • Multiplicity: [1]

loop

Indicates if the RoadLink feature connects back on itself by having the same start and end roadNode.

  • Attribute name: loop

  • Type: Boolean

  • Length: 5

  • Multiplicity: [1]

primaryRoute

States if the RoadLink forms part of the primary route network.

  • Attribute name: primaryRoute

  • Type: Boolean

  • Length: 5

  • Multiplicity: [1]

trunkRoad

States if the RoadLink forms part of the trunk road network.

  • Attribute name: trunkRoad

  • Type: Boolean

  • Length: 5

  • Multiplicity: [1]

startNode

The node coincident with the first vertex of the geometry attribute.

  • Attribute name: startNode

  • Length: 38

  • Multiplicity: [1]

endNode

The node coincident with the last vertex of the geometry attribute.

  • Attribute name: endNode

  • Length: 38

  • Multiplicity: [1]

roadNumberTOID

Identifier of the Road feature that holds the information about the road classification number the RoadLink forms part of in the OS MasterMap Highways Network product.

  • Attribute name: roadNumberTOID

  • Length: 20

  • Multiplicity: [0..1]

roadNameTOID

Identifier of the Road feature that holds the information about the road name the RoadLink forms part of in the OS MasterMap Highways Network product.

  • Attribute name: roadNameTOID

  • Length: 20

  • Multiplicity: [0..1]

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