In 2019, London implemented something known as an Ultra-Low Emission Zone (or ULEZ). The intent was to reduce the number of older and higher-polluting vehicles entering and driving around the city.
It works like this: If you have a vehicle that does not meet the ULEZ emission standards, you need to pay a daily charge of £12.50. This applies all day every day (except Christmas) and it is in addition to London's congestion charge.
It's also done entirely through license plate cameras. If you enter the zone, don't have an approved plate, and don't pay the charge within a few days, you get sent a fine. The result is that London's ULEZ is now the largest clean air zone in the world (at least according to London).
It also achieved its intended purpose. In 2017, only 39% of cars entering London would have met the ULEZ emission standards. Today the number is over 95%. Meaning, most people don't actually pay the charge.
At the same time, nitrogen dioxide levels in the zone have more than halved, improving overall health outcomes. It's a perfect example of taxing the things you want less of. What's also interesting is that there were positive second-order consequences.
Vehicle traffic as a whole declined by about 9% in the first year, with no evidence of displacement to other areas. And according to this research study, it actually encouraged more kids to walk and take other forms of "active transport" to and from school.
Seems like a no brainer to me.
A draft version of the new London Plan was released today for public consultation. It is “the spatial development strategy for Greater London”. And you can download all 524 pages of it, here. A final copy of the Plan is expected to be published by fall 2019.
Here is what mayor Sadiq Khan had to say about the Plan (quote from The Guardian):
“I am using all of the powers at my disposal to tackle the housing crisis head on, removing ineffective constraints on homebuilders so we make the most of precious land in our capital.”
And that tone comes through in the document. Here is an excerpt from the “optimising housing density” policy section:
“For London to accommodate growth in an inclusive and responsible way every new development needs to make the most efficient use of land. This will mean developing at densities above those of the surrounding area on most sites. The design of the development must optimise housing density.” (Section 3.6.1)
The Plan also contains a set of clear performance indicators. They cover things like the supply of new homes, the supply of affordable homes, modal share in the capital, and so on.
The ambition is 66,000 net additional homes each year. And by 2041, the goal is that 80% of all trips in London will be by foot, cycle, or public transport. There simply isn’t road the capacity.
Which is why the plan also specifies parking maximums, as opposed to parking minimums. The Plan wants the starting point for any development that is well-connected to transit – or to future transit – to be “car-free”.
If you have a chance, the new London Plan is worth a scan. Maybe you don’t want to print it though.