Question to the Home Office:

To ask Her Majesty's Government who is responsible for ensuring the (1) accuracy, and (2) reliability, of electronic devices used to measure the speed of vehicles on (a) motorways, and (b) other major highways; and whether they have any plans to amend these arrangements.

The Government’s Home Office Type Approval (HOTA) process oversees the accuracy and reliability of vehicle speed measurement devices to ensure they meet the specified requirements.

Manufacturers work with Road Safety Support to test the accuracy of speed cameras and provide test reports as part of the HOTA submission process. These reports are reviewed by scientific colleagues at the Defence, Science and Technology Laboratory (DSTL) who will then make a recommendation on a device’s suitability for Type Approval.