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22.09.2025

Digital traffic regulation orders D-TRO service - Guidance from the DfT (Department for Transport)

​Access the data from digital versions of traffic regulation orders via an API (application programming interface).

The D-TRO service

The D-TRO service is a centralised repository to hold digital traffic regulation orders. These D-TROs are published to the service by traffic regulation authorities (TRAs) or their digital solution providers (DSPs).

The data, which is accessed via an API, can be used for purposes such as:

  • improving existing services, for example, sat nav routing
  • reducing enforcement and processing costs to highway authorities
  • reducing congestion by providing information on road closures
  • supporting the development of innovative new services
  • providing the digital infrastructure for connected and automated vehicles

Click this link to read the guidance

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