We asked if departments had considered revisiting the assumption of a clean air zone as the baseline for judging local authority plans, given that there have been delays to implementation. DfT told us that the evidence from the latest annual assessment is that the clean air zone is the fastest way to achieve compliance, but that they are open to other approaches if local authorities can put together a package of measures that would achieve compliance faster.33

We asked if departments had considered revisiting the assumption of a clean air zone as the baseline for judging local authority plans, given that there have been delays to implementation. DfT told us that the evidence from the latest annual assessment is that the clean air zone is the fastest way to achieve compliance, but that they are open to other approaches if local authorities can put together a package of measures that would achieve compliance faster.33 Type: conclusion | Number: 22 | Response status: not_addressed Government response: Under the NO programme, local authorities are responsible for developing their own 2 Clean Air Plans. Throughout plan development, local authorities are supported by a dedicated account manager. Following a Clean Air Zone launch, the government carries out lessons learned exercises which include see