Data creation and provenance

The OS MasterMap Highways Network with Speed Limits product contains detailed speed limit information based upon traffic signage. Many other speed datasets are built by sending vehicles around the UK; however, this product captures speed limit information and validates it more frequently through the following sources:

  • Accident information

  • Telematics data

  • FOI requests

  • Road layout logic

  • Local Authorities

  • An online visual tool that is used to manage the updates which is accessed by numerous trusted users

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