Versioning information

This page highlights the changes which have been introduced when releasing a new data schema version within the OS NGD Transport Theme.

The 'Data schema versioning' page in the Core Principles section has more in-depth information about how data schema versioning works in the OS NGD.

September 2023 release of data schema version 2.0

The following feature type in the Transport Network Collection is now available as data schema version 2.0:

• Road Link

The following new attributes have been added to the Road Link feature type:

Attribute name	Data type
presenceofpavement_overall_m	numeric
presenceofpavement_overallpercentage	numeric
presenceofpavement_left_m	numeric
presenceofpavement_leftpercentage	numeric
presenceofpavement_right_m	numeric
presenceofpavement_rightpercentage	numeric
presenceofpavement_minimumwidth_m	numeric
presenceofpavement_averagewidth_m	numeric
presenceofpavement_evidencedate	string
presenceofpavement_updatedate	string
presenceofpavement_source	string
presenceofpavement_capturemethod	string

More information on the new attributes is available on the individual feature type pages – the new attributes are easy to spot as they have a blue square 'NEW' emoji next to them and a note saying: 'This is a new attribute in data schema version 2.0, available from the end of September 2023.' For example:

Example of one of the new attributes available for the Road Link Feature Type in data schema version 2.0.