I tried to explain our approach to air quality monitoring in response to the noble Lord, Lord Whitty, but the noble Baroness has taken up the issue as well. There is a network of monitoring across the UK. It is not complete or perfect, but we keep it permanently under review and have committed increased investment both to fill in the gaps and to upgrade and update the infrastructure, just to make sure that the network is doing what it is supposed to.
The noble Baroness asked where the responsibility lies. While the responsibility for meeting the national target that we will set as a consequence of the Bill, the PM2.5 target, will clearly be with national government, there is a huge role for local authorities when it comes to delivering those reductions. This will happen only as a result of partnerships. There are things that local authorities can do to tackle air pollution, but there are things that they cannot do and areas in which they rely on national government. For example, the initiative on cars—the transition to electric vehicles—can be helped by local authorities via charging networks, but fundamentally it will result from national policy.
The noble Baroness mentioned idling. Ultimately, that will have to be enforced by local authorities. I was involved in campaigns of that sort, specifically on idling, as the Member of Parliament for Richmond Park. It was extraordinary how many people would unthinkingly leave their engines on at a level crossing that would sometimes be down for nearly 10 minutes. Once they were politely asked to turn their engines off,
they always did—not surprisingly—and we found that behaviour improved dramatically over just a few months. The local authority became better at issuing fines for repeat offenders. That was not the objective—no one wanted to see an increase in fines—but it was effective as a deterrent.
It is a complicated answer because ultimately, if we are to get where we need to go, it will be through collaboration between local, regional and national government.