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London and Paris launch car scoring initiative based on real-world emissions; ICCT the technical lead

Mayor of Paris and Chair of C40 Cities Anne Hidalgo and Mayor of London Sadiq Khan announced they are working together to create schemes to score new cars based on their real-world emissions and their impact on air quality and to provide that data in an accurate and accessible form to the public. Other cities have committed to work with the C40 Cities toward adoption of similar schemes.

The initiative announced today by Paris and London is supported by The Real Urban Emissions (TRUE) Project, funded by Bloomberg Philanthropies, the FIA Foundation, and the Joshua and Anita Bekenstein Charitable Fund. This new undertaking will capture detailed information on pollutants from vehicle exhaust using remote-sensing equipment and portable emissions monitoring systems. The ICCT will be the lead technical organizational partner managing vehicle testing and data analysis in the TRUE Project.

The new initiatives will award each car model a score based on all of the air pollutants they release during real-world, on-road conditions. The scores will be made easily available to citizens through dedicated websites. Consumers will therefore enjoy a far more accurate understanding of how polluting that car will be when driven on urban streets. Paris and London have committed to launch their data online by the end of 2017.

Several other C40 cities, including Seoul, Madrid, Mexico City, Milan, Moscow, Oslo and Tokyo have committed to work with C40 to develop a global scoring system relevant and accessible to all citizens, and will explore how to provide this accurate and transparent information to the public.

The existing EU labeling scheme only rates vehicles for fuel efficiency and CO2 emissions, and are based on laboratory tests. Research has shown that current testing schemes conceal the real-world levels of toxic emissions. Some diesel cars that meet the latest Euro 6 standards in reality release more NOx than a modern heavy duty truck. (Earlier post.)

Zurich remote sensing data shows a wide disparity between petrol and diesel car NOx emissions, and substantial noncompliance by diesel cars. Source: The ICCT. Click to enlarge.

Although the upcoming Real Driving Emissions (RDE) regulation will address the issue of excessive NOx emissions, phase in will be slow and effectiveness limited, the ICCT observed. The RDE will only be fully in place by January 2021, and in its likely final version, real world NOx emissions are still expected to be more than twice the regulatory limit, and three times higher than for gasoline vehicles, the ICCT said.

Other labeling schemes, such as the Crit’Air program, certify vehicles’ environmental class based on pollutant emissions, and may distinguish diesel from gasoline powertrains. The City of Paris uses the Crit’Air program to incentivize the cleanest vehicles and ban older vehicles that emit more air pollutants.

Independent real-world emissions testing by the ICCT and others confirms the effectiveness of this approach for certain pollutants, which are emitted in greater quantity by older vehicles: hydrocarbons, which are ozone precursors; carbon monoxide; and fine particles, which are important causes cardiopulmonary disease.

However, the ICCT notes, labeling by itself in insufficient to address the problem of diesel vehicles. On average, European passenger diesel cars emit NOx emissions under real world driving conditions that are seven times the regulatory limit. (Earlier post.)

Even vehicles that meet the latest (Euro 6) emission standard in most cases (but not all) emit excessive amounts of NOx in real-world operation. Real world testing data from testing campaigns in German, the UK, France, and other Member States shows that the majority of Euro 6 vehicles are still emitting NOx at several times legal limits.

The mayoral announcement was made following a closed-door meeting between mayors, senior city officials and representatives of several major car manufacturers, designed to find ways to accelerate the transition to low-emission and electric cars. The meeting, was the first such effort by city leaders and car manufacturers to work together in planning for a sustainable future.



Interesting how diesel got worse from 1990 to 2000 before getting marginally better to 2005.

If this is taken seriously, "they" will have to give up diesel in cities, and probably switch to gasoline hybrids or diesel PHEVs (or full EVs).

I suppose the question is how to get the most polluting vehicles out without bankrupting loads of small businesses and individuals.

One approach would be to look at the emissions / mile and the number of miles, rather than just the per mile rate. Some old guy who does 3000 miles / year is not as big a problem as a delivery van doing 20K / year.


Bankrupting business and individuals?

7 year old EURO5 petrol car will get you CRIT'air 1 sticker, only EVs get better green sticker.

If ICCT will test individual models, they will have a lot of work to do, what will happen with older models not tested? Who will test Prius from 2005? Will older Prius be baned because of this?


So, looks like the diesel emissions scam started in '96. I think all parties knew the score and decided to look the other way. To much money and influence aka crony capitalism.

I did read the petrol industry is now spending millions for anyone who has technology to can clean up the exhaust. I guess only lately did the accountants calculate it was cheaper to conform to the law. The problem is the current processing of crude oil is limited to percentages of final product. They can marginally flex outputs, but the ratio of gasoline to diesel is important. The industry needs a market place that will balance the equation. What will they do if diesel fuel sales drop? Ship more to foreign countries less stringent on air quality? Maybe subsidize diesel sales? I think this is one reason petrol hates ethanol as the fuel messes up their equation. The market place is currently sweet for maximum profit. Also, nice not to have any competition at the pump in which will work to dampen price spikes.


They are only a gang trying to put new and excessive taxs on old and new cars and trucks. These mayors invade the automotive industry to grab the money of car owners. They probably post here to spread lies and fuds. It's easy to see that this site is rule by the political mob and half the posters are paid to raise taxs everywhere by any means.

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