LogoLogo
OS Docs HomeOS NGDOS APIsOS Download ProductsMore than MapsContact Us
  • More than Maps
  • Geographic Data Visualisation
    • Guide to cartography
      • Introduction to cartography
      • Types of maps
      • Symbology
      • Colour
      • Text on maps
      • Generalisation
      • Coordinate reference systems
      • Projections
      • Scale
      • Map legends
      • Map layout
      • Relief representation
      • North arrows
    • Guide to data visualisation
      • Introduction to data visualisation
      • GeoDataViz design principles
      • Types of visualisation
      • Thematic mapping techniques
      • Data visualisation critique
      • Accessible data visualisation
      • Ethical data visualisation
      • Software
      • Data
    • GeoDataViz assets
      • GeoDataViz basemaps
      • Stylesheets
      • GeoDataViz virtual gallery
      • Equal area cartograms
      • How did I make that?
        • Apollo 11 Landing
        • North York Moors National Park, 70 years
        • Snowdonia National Park, 70 years
        • Great Britain's National Parks
        • Great Britain's Islands
        • Great Britain's AONB's and National Scenic Areas
        • Famous shipwrecks of Pembrokeshire
        • Trig pillars today
        • Britain's most complex motorway junctions
      • #30DayMapChallenge
  • Data in Action
    • Examples
  • Demonstrators
    • 🆕Product Viewer
    • Addressing & location demonstrators
      • Address Portfolio overview
      • Which address product should you use?
      • AddressBase
      • AddressBase Core
      • AddressBase Plus
      • AddressBase Premium
      • Address Classifications
      • Addressing Lifecycle
      • OS Emergency Services Gazetteer
      • What are Vertical Streets?
      • Why are there differences in boundaries?
    • Contextual demonstrators
    • Customer best practice
      • Channel Shift
      • Data Management and OS Data Hub
      • End User Licence vs Contractor Licence
      • 🆕 IDs vs Spatial Relationships
      • Why we should capture good quality addresses at source
      • Why we Snap and Trace
    • Network Demonstrators
      • OS Detailed Path Network
      • OS Multi Modal Routing Network
        • OS Multi Modal Routing Network
      • Water Networks overview
      • OS MasterMap Highways Network and OS NGD Speeds
      • OS MasterMap® Highways Network and OS Open Roadsâ„¢
    • OS MasterMap Generation APIs
      • Using the OS Features API
      • Using the OS Features API Archive
      • Using the OS Downloads API
      • Using OS APIs in ESRI Software
    • 🆕OS NGD (National Geographic Database)
      • OS NGD Address
      • OS NGD Boundaries
      • 🆕OS NGD Buildings
        • 🆕Building and Building Access Feature Types
        • Building Part and Building Line Feature Types
      • 🆕OS NGD Geographical Names
      • OS NGD Land
      • OS NGD Land Cover enhancements
      • 🆕OS NGD Land Use
      • OS NGD Land Use enhancements
      • 🆕OS NGD Structures
        • 🆕OS NGD Structures
        • Field Boundaries
      • 🆕OS NGD Transport Features
      • 🆕OS NGD Transport Network
      • OS NGD Transport RAMI
      • OS NGD Water Features
      • OS NGD Water Network
      • OS NGD API - Features
      • Ordering OS NGD data
      • Change only updates
      • OS NGD Versioning
      • Creating a topographic map from OS NGD Data
      • Analytical styling for OS NGD data
    • OS MasterMap® demonstrators
    • 🆕Product & API Comparisons
      • 🆕Comparison of Water Network Products
  • Tutorials
    • GeoDataViz
      • Thematic Mapping Techniques
      • Downloading and using data from the OS Data Hub
      • How to download and use OS stylesheets
      • How to use the OS Maps API
      • Creating a bespoke style in Maputnik
    • GIS
      • Analysing pavement widths
      • Basic routing with OS Open Data and QGIS
      • Walktime analysis using OS Multi-modal Routing Network and QGIS
      • Creating 3D Symbols for GIS Applications
      • Constructing a Single Line Address using a Geographic Address
      • Creating a Digital Terrain Model (DTM)
      • Visualising a road gradient using a Digital Terrain Model
      • Visualising a road gradient using OSMM Highways
    • 🆕APIs
      • 🆕Using OS APIs with EPC API
      • 🆕OS APIs and ArcGIS
  • Deep Dive
    • Introduction to address matching
    • Guide to routing for the Public Sector
      • Part 1: Guide to routing
      • Part 2: Routing software and data options
      • Part 3: Building a routable network
    • Unlocking the Power of Geospatial Data
    • Using Blender for Geospatial Projects
    • A Guide to Coordinate Systems in Great Britain
      • Myths about coordinate systems
      • The shape of the Earth
      • What is position?
        • Types of coordinates
        • We need a datum
        • Position summary
      • Modern GNSS coordinate systems
        • Realising WGS84 with a TRF
        • The WGS84 broadcast TRF
        • The International Terrestrial Reference Frame (ITRF)
        • The International GNSS Service (IGS)
        • European Terrestrial Reference System 1989 (ETRS89)
      • Ordnance Survey coordinate systems
        • ETRS89 realised through OS Net
        • National Grid and the OSGB36 TRF
        • Ordnance Datum Newlyn
        • The future of British mapping coordinate systems
        • The future of British mapping coordinate systems
      • From one coordinate system to another: geodetic transformations
        • What is a geodetic transformation?
        • Helmert datum transformations
        • National Grid Transformation OSTN15 (ETRS89–OSGB36)
        • National Geoid Model OSGM15 (ETRS89-Orthometric height)
        • ETRS89 to and from ITRS
        • Approximate WGS84 to OSGB36/ODN transformation
        • Transformation between OS Net v2001 and v2009 realisations
      • Transverse Mercator map projections
        • The National Grid reference convention
      • Datum, ellipsoid and projection information
      • Converting between 3D Cartesian and ellipsoidal latitude, longitude and height coordinates
      • Converting between grid eastings and northings and ellipsoidal latitude and longitude
      • Helmert transformation worked example
      • Further information
  • Code
    • Ordnance Survey APIs
    • Mapping
    • Routing with pgRouting
      • Getting started with OS MasterMap Highways and pgRouting
      • Getting started with OS MasterMap Highways Network - Paths and pgRouting
      • Getting started with OS NGD Transport Theme and pgRouting
      • Getting started with OS NGD Transport Path features and pgRouting
  • RESOURCES
    • 🆕Data Visualisation External Resources
Powered by GitBook

Website

  • Ordnance Survey

Data

  • OS Data Hub
On this page
  • What are the layers in OS NGD Transport Features?
  • Road Track Path feature type
  • Road Line feature type​
  • Street Light feature type
  • Associated Structure​
  • What formats does the ​ OS NGD data come in?​
  • What is the attribution?​
  • Source of the new attribution

Was this helpful?

  1. Demonstrators
  2. OS NGD (National Geographic Database)

OS NGD Transport Features

A Lightning Talk

PreviousField BoundariesNextOS NGD Transport Network

Last updated 2 months ago

Was this helpful?

What are the layers in OS NGD Transport Features?

There are five layers in OS NGD Transport Features, all of which share geometry with OSMM Topography Layer

Polygon features that include Roads, Paths, Central Reservations, Pavements, Traffic Calming and Curtilage (taken from OS MasterMap Topography Layer Roads Tracks and Paths theme)

Line features that represent road traffic calming features ​ not captured as polygons (taken from OSMM Topography Layer topographic lines)​

Line geometry that represent the actual rails of the railway lines and railway buffers (taken from OSMM Topography Layer topographic lines)​

Polygons covering land used for railways (from OSMM Topography Layer Rail theme). The attribution now includes land cover information that gives further detail on the make up of the railway land

Point features that represent street light locations. The attribution includes a link to an associated transport link

Road Track Path feature type

There are now 4 different attributes in this data that allow the user to classify the polygons in the layer​

  • Description: Similar to the description field in OS MasterMap Topography Layer but with expanded range of values​

  • Land Cover Tier A: Gives a high-level land cover attribute, e.g. Trees​

  • Land Cover Tier B: Gives a more detailed level of land cover information,​ e.g. Non-Coniferous Trees​

  • Land Use Tier A: Gives a value for the use of the land, e.g. non-​coniferous trees that are on land used for ​Transport: Road, Track or Path​

The same principles also apply to Rail Feature Type.

Road Line feature type​

​Currently contains traffic calming information in a linear form, representing two types of features. ​ This data should be used in conjunction with the Traffic Calming data from the road Track Path Feature Type​

Street Light feature type

The location of streetlights are represented by a point geometry.

Each street light point has been matched to the nearest roadlink or pathlink. The street light feature includes the following attribution about the match:

  • The id of the matched link

  • The feature type that it has been linked to

  • The confidence of this match

Street light locations have been captured and extracted from aerial imagery.

Associated Structure​

The Transport Features include information about structures that the roads and rail are associated to such as a Bridge, Footbridge, Viaduct, Swing Bridge, Underpass and so on.​

  • Physical Level​: There is also information on what Level the road or rail feature is on, such as Level 1 for a bridge over another road where the lower road would be at Surface Level​

  • Data in other themes​: However, some features that comprise the Transport Infrastructure are stored in other themes. In the case of the Viaduct on the image this is in the Land theme for the polygon ‘on the ground’ and in the Compound Structure feature type.

What formats does the ​ OS NGD data come in?​

The OS NGD Transport Features data comes in two formats, Geopackage and CSV​

  • Geopackage comes ready to load into a GIS package, with different .gpkg files for each layer.​

  • CSV is more suited for loading into a database. It has the same layers and attribution as Geopackage but the geometry is stored as a POLYGON or LINESTRING attribute with vertices stored as co-ordinate pairs in the text.​

What is the attribution?​

  • All OS NGD data has an OSID​

  • The features have a TOID, version, version date and changetype

  • Polygons feature Land Cover and Land Use as well as the evidence dates and update dates​

  • Rail layers have Operational Status allowing users to identify ‘Active’ or ‘Inactive’ railway​

Source of the new attribution

Ordnance Survey surveyors and remote sensing teams have been capturing and maintaining information on land cover, land use and a more detailed level of description for over 10 years. ​

  • In the case of Land Use, several classifications of Land Use have been captured but had not made it into the existing products​

  • This data has been transformed to match attribution for existing products, such as OS MasterMap Topography Layer ​

However, in the OS NGD data it is being published at the original, more granular level


Links that may be useful:

More information on Land Cover enhancements can be found in the

This content has been developed from what was originally a Lightning Talk PowerPoint slide set. These slides are available to PSGA members to view and download from the

Land Cover Enhancements Lightning Talk
PSGA members area of the OS website
🆕
🆕
OS NGD Documentation Platform | osngd
Logo
OS Data HubOrdnanceSurvey
OS Select+Build | OS productsOrdnance Survey
Logo
Road, Track Path
Road Line
Cartographic Rail Detail
Rail
Street Light Points
Transport Feature Type styled by Description
Street Light features with attribution
Associated structure examples
Transport Feature attribution
Page cover image
Logo