Quality Assurance of OpenStreetMap using Open USRN dataset

Roads not in Open USRN

Highlighted are roads within OpenStreetMap which could not be matched to a feature within Ordnance Survey Open USRN

Classification examples

Roads which are longer than the corresponding USRN line

Dressington Avenue with USRN 22005438 does not extend up to the Ladywell Center building.

Roads which do not exist within USRN

Roads which are the combination of multiple USRN geometries

Queen Anne's Gate is the combination of USRNs 8401504 and 8400950.

Cleveland Square and Cleveland Gardens are the combination of USRNs 8400938, 8400935 and 8400440.

Roads which were not automatically matched

Parliament Square should be matched to USRN 8400751, but is traced with more precision within OpenStreetMap.

Ways that are considered a road

Any highway value listed below

USRNs not matched in OSM

Highlighted are features within Ordnance Survey Open USRN which could not be matched to any highway within OpenStreetMap.