> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-downloads/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-downloads/products/transport-network-portfolio/os-mastermap-highways-network-fundamentals/release-notes/april-2025.md).

# April 2025

## Source data currency

The following information relates to the currency of the source data used in the creation of this release of OS MasterMap Highways Network:

| Data Source                        | Date          |
| ---------------------------------- | ------------- |
| GeoPlace Streets Data              | 07 March 2025 |
| Improvement Service Streets Data   | 06 March 2025 |
| OS Road, Path, and Routing Content | 05 March 2025 |

## OS MasterMap Highways Network feature counts

| Roads’ Feature         | Count     |
| ---------------------- | --------- |
| AccessRestriction      | 35 635    |
| FerryLink              | 102       |
| FerryNode              | 132       |
| FerryTerminal          | 132       |
| Hazard                 | 41 988    |
| HighwayDedication      | 3 603 887 |
| Maintenance            | 1 318 056 |
| Reinstatement          | 1 527 138 |
| RestrictionForVehicles | 12 119    |
| Road                   | 854 328   |
| RoadLink               | 8 507 463 |
| RoadNode               | 7 538 618 |
| RoadJunction           | 6 883     |
| SpecialDesignation     | 789 381   |
| Street                 | 1 490 806 |
| Structure              | 1 385 341 |
| TurnRestriction        | 1 047 714 |

| Paths’ Feature     | Count     |
| ------------------ | --------- |
| ConnectingLink     | 1 996 794 |
| ConnectingNode     | 1 853 848 |
| FerryLink          | 112       |
| FerryNode          | 200       |
| FerryTerminal      | 200       |
| HighwayDedication  | 404 637   |
| Maintenance        | 204 954   |
| Path               | 25 348    |
| PathLink           | 3 334 078 |
| PathNode           | 3 936 187 |
| Reinstatement      | 210 137   |
| SpecialDesignation | 12 840    |
| Street             | 256 900   |

## Data issues

We aim to publish a refreshed OS Open Roads Lookup table with OS MasterMap Highways Network – Roads and OS MasterMap Highways Network– RAMI orders twice a year in line with OS Open Roads publication (April and October). The refreshed lookup table will be published in the May OS MasterMap Highways Network publication, but will reflect April 2025 data for both OS MasterMap Highways Network and OS Open Roads.

Please see the [OS MasterMap Highways Network Known Data Issues page](/os-downloads/products/transport-network-portfolio/os-mastermap-highways-network-fundamentals/os-mastermap-highways-network-known-data-issues.md) for details of live and resolved data issues for the products.

### Product Updates

The Silvertown Tunnel, London will be open from 07 April 2025 and will be available in the May 2025 release of OS MasterMap Highways Network.

## Next release

The next release of OS MasterMap Highways Network is scheduled for May 2025.


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