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It makes absolute sense to put that in the planning regulations for new builds. I do not want to commit other cabinet secretaries to policy, but the more we can do to make that natural and encourage it from the start, the better. There is the issue of conversion for existing properties and the question of new builds. I am not familiar with the planning regulations for new builds, but we may be able to come back to you on that because it is a good point that has been well made.

We will come back in writing, but we will check the 2023 regulations to see if they are compatible with what Sarah Boyack is saying.

It is £30 million.

That is a requirement of all grants that come from the Government, so that we can identify what goes into local supply chains. Measuring that is an aspect of the general procurement condition of grants.

I think that Morna Cannon previously helped to explain what targets we will set. There will be a 16 per cent emissions reduction target, but we are also setting a 4 per cent car mile reduction target.

There are challenges around whether that is enough and whether we should encourage a greater reduction; I know from the committee’s evidence sessions that some people think that it should be greater. It is not only about emissions reduction as there are other reasons as to why we would want to consider that. Road safety is one, and, given that there are particulates that people are still concerned about, health and wellbeing is another.

I know that the issue of where we are now and where we might move to is up for public discussion. I also suspect that political points will be made by different political parties.

We have ensured that rail prices, particularly for commuters, are cheaper with the removal of peak rail fares. The average saving is 17 per cent, while in the Glasgow to Edinburgh corridor, it is 48 per cent—

I understand. All I am saying is that, if you reduce the cost, you will increase the number of people who want to use the service, which is a good thing. I see that regularly on the Glasgow to Edinburgh line. However, there are limits to the number of carriages that any particular train or, indeed, station—the issue actually tends to arise more with stations—can take.

The extensive investment that we are making in rail electrification and the new fleet is also about making improvements. As far as capacity is concerned, you have talked about the length of trains and the number of carriages, but the fact is that different carriages will have different numbers of seats. I want to be careful not to get this wrong, because it is getting into a certain level of detail, but it is likely that the replacement fleet, which we are also procuring for the Fife and Borders lines, will have more seats in the carriages. The issue is the number of carriages that will be available, but improvements in frequency as well as the improvements that electrification can bring—and which we are already seeing on the East Kilbride line, which has just been electrified—will help in that area.

There is a general challenge in the south-east of Scotland, though, as a result of population increases and the major housing developments that are being approved right across Midlothian, East Lothian and in my own constituency in West Lothian.

Do you mean the 4 per cent car mileage reduction? I do not know. We would need to look at the projections for individual cities. There are other reasons to do it, however, such as improving quality of life and dealing with particulates. We know from international information that reducing car usage in a city enhances economic growth and footfall in hospitality, leisure and so on. There are costs and benefits in all of these policies. We should not underestimate the benefits of doing these things for reasons other than reducing emissions.

The biggest reliance is on people switching to EV cars, which is still car use. We are not saying that people cannot use cars. As the previous and current UK Governments have said, we are saying that we need to make the switch to EVs in order to tackle climate change and reduce vehicle emissions. However, it is not the only tool. Obviously, it is quite controversial. In the debate that we had on congestion charges, just about every party, including the Labour Party, were agin it at that point. There is a question about how we can take people with us on challenging things.

A national body such as ESS may want centralised national enforcement and national leadership and so on. However, if everything was done centrally, we would not take people with us, which we will have to do. The best way to do that is in partnership. I have had quite good and challenging discussions with local authorities through the Convention of Scottish Local Authorities and regional transport partnerships. You should not think that local authorities do not want leadership in this area; many of them want support with what they are doing. Some of the active travel infrastructure that has been built is extremely popular and local authorities are pleased with and proud of how they are delivering that. Local authorities have been crying out for the bus infrastructure fund for some time. Obviously, financial pressures and the cut in our capital budget generally meant that there was a real challenge with that, but we are now back on track, which is very good.

From all my time in government, I know that, if we can do things in partnership with people, we are more likely to achieve an effective result. I would rather do things with, rather than to, local authorities.

I think that the people you are talking about are the haulage companies, and we are talking directly with haulage companies and hauliers. The Road Haulage Association attended the session that we had here in Edinburgh just a few months ago, along with major haulage companies that are interested in the area. It is about how to get the finances to stack up, which is one of the interesting lessons from the timber pilot that is operating in Inverness. We need to know what the sweet spot is that makes it make sense. You are right that, until electric HGVs make sense financially, people will not do it. That is why we are engaging, putting in resources, time and effort, and working with the sector to help convince people that it is possible.

However, it is not just a case of convincing people—they are interested and they know that there will be a requirement. We should remember that the UK Government will be looking at mandates in relation to HGVs, and it is starting progress on that. I suppose that it is a pincer movement—it is about demand but also other areas.

You talked about biofuels, which are important. Obviously, we want aviation as the key market for that. However, there are challenges in a country such as Scotland with regard to where the main focus of that should be. There is also potential for rail, relating to some of the lines that will not be electrified any time soon.