OS MRN Known Data Issues

This page lists known data issues in relation to the OS MRN product. Once resolved, details of a known data issue will be held on the page until the next release of the product.

Live known data issues

Data Issue Name	Data Issue Description
Records with unexpected speed attributes	Some records have a 'maxspeed:foward' or 'maxspeed:backward' value which is not in sympathy with the corresponding OS NGD Average and Indicative Speed information. This issue is being investigated by our development team.
Missing features compared to OS NGD Transport	2 Road Links, 2 Path Nodes, 9 Path Links and 100 Railway Nodes are not present in OS MRN, but are present in the corresponding release of OS NGD Transport Network. This issue is being investigated by our development team.

To report an issue not currently listed here, please visit the 'Contact us' page on the OS website.

Resolved data issues

Data Issue Name	Original Description for Data Issue	Data Issue Resolution Date	Resolution Message
Records with unexpected os_overallpavementpresence.	Some records have an os_overallpavementpresence which is not in sympathy with the corresponding OS NGD Road Link pavement information. This issue is being investigated by our development team.	13/05/2025	This issue was resolved in the May 2025 release of OS MRN.
Records with unexpected 'foot' attribute.	Some records have a 'foot' value which is not in sympathy with the corresponding OS NGD transport link. This issue is being investigated by our development team.	13/05/2025	This issue was resolved in the May 2025 release of OS MRN.