Question to the Department for Transport:

To ask the Secretary of State for Transport, with reference to her Department's reports entitled Roadside Vehicle Noise Measurement - Phase 2 Final Report, published August 2021, and Work Order T0218 Roadside Vehicle Noise Measurement – Phase 3 Parts A to C, published March 2024, what assessment she has made of noise camera trials in (a) controlled and (b) real-world conditions in (i) detecting and (ii) identifying excessively noisy vehicles.

The Department conducted controlled and real-world trials of noise camera technology between April 2022 and February 2023. Reports of these trials, including detailed assessment of the technology’s performance and potential merits, were published on 17 March 2024.

Overall, the trials demonstrated that noise cameras currently have the potential to detect and identify excessively noisy vehicles, but only when accompanied by human review of the recorded evidence, which is likely to lower the cost effectiveness of deploying the technology in many circumstances.