London's new Mayor, Sadiq Khan, was elected on 9 May and although his manifesto showed no interest in changing the congestion charge, he has made one of his top priorities addressing air quality in the city.
The Transport for London website claims that London breaches EU legal limits on Nitrogen Dioxide (which may not necessarily be a legal matter once the UK leaves the EU, but that doesn't mean there isn't a problem!), and that pollutants "cause" the equivalent of 9,400 deaths in London per annum. I'm always a little wary of statistical correlations between alleged causes and effects when the actual affects are more likely to be discreet, cumulative and one of multiple factors in accelerating deaths. It is always a good headline, but there is little sense of the historic state of air quality. London has come a long way from pea-soup smog (it wasn't fog) due to coal being burnt to heat households, businesses and generate electricity in the 1950s, with gas heating, energy efficiency, the demise of steam locomotives, relocation of port activities to Tilbury and beyond. Road vehicles are cleaner burning than they have ever have been, although the misguided fiscal encouragement towards purchases of light diesel vehicles in the 2000s (to reduce CO2 emissions) has not helped as low CO2 has come at the price of particulate emissions, which are one of the most serious contributors to respiratory diseases.
London has severe congestion, which is a contributor to pollution, because the idling times and low traffic speeds mean emissions per vehicle mile are higher than they would be if congestion were lower.
The Mayor of London has decided to consult on using charging as part of a programme to reduce emissions.
London's existing Low Emission Zone
London already has a Low Emission Zone (LEZ), which was introduced in 2008. It applies to all roads in London, excluding the motorways (which of course only serve destinations that are on local roads). It requires the following vehicle standards:
- All trucks, buses and coaches must meet at least the Euro IV standard for emissions;
- All larger vans and minibuses must meet at least the Euro III standard for emissions.
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| All of Greater London is the area of the Low Emission Zone |
The LEZ does not apply to smaller vehicles. Vehicles that do not meet those standards either must be retrofitted to do so, or be subject to a daily charge for driving in London of £100 or £200. It is intended to ensure commercial vehicles in London meet fairly average emission standards. Euro 3 came into force in 2000 and Euro 4 in 2005, so it is not a significant burden to expect most such vehicles to meet those standards. It wouldn't be unreasonable to uplift that to Euro 4 for light commercial and Euro 5 for heavy vehicles by 2020.
Yet there is no evidence that the LEZ has had any measurable impact. According to Citylab, a study from two years ago indicates the LEZ has had NO impact. There are some guesses made as to why, such as how newer vehicles may be reducing NOx by less than forecast (and one may also surmise that if there has been extensive fraud in emissions testing by manufacturers, that they are somewhat to blame. Another is that the growth in the number of diesel cars has offset the improvements in heavy vehicles. Of course the LEZ has no impact on that, and the UK Government has only reformed Vehicle Excise Duty (annual registration fees) to remove the advantage low CO2 (diesel) vehicles get from that tax.
Mayor's proposals
What the Mayor is proposing is as follows:
- bring the implementation of the central London Ultra Low Emission Zone (ULEZ) forward by one year to 2019;
- expanding the ULEZ beyond central London in 2020;
- introducing a new Emissions Surcharge from 2017 for the most polluting vehicles entering central London;
- giving TfL the go-ahead to start looking at a diesel scrappage scheme as part of a wider national scheme run by the government;
- keeping Londoners better informed and alerted when pollution is at its worst;
- making sure TfL leads by example by cleaning up its bus fleet and buying only hybrid or zero emission double-decker buses from 2018.
The fourth, fifth and sixth proposals are nothing to do with road charging, but the other three are, and could have quite a significant impact on the cost of driving in London for vehicles that are not eligible.









