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Use of remote-sensing technology for vehicle emissions monitoring and control

Measurement of exhaust emissions from in-use vehicles is key to any effective system for controlling air pollution in the transportation sector. The best-known method of in-use vehicle emissions...
Published 2018.12.17: Publication

China’s Stage VI emissions standard for heavy-duty vehicles (final rule)

On June 28, 2018, the Ministry of Ecology and Environment (MEE) of the People’s Republic of China released the final rule for the China VI emission standard for heavy-duty vehicles. The China VI...
Published 2018.07.20: Publication

Laboratory and on-road testing of exhaust emissions of two modern China 5 light-duty gasoline vehicles

There is growing evidence that vehicle emissions under real-world driving conditions can be significantly higher than certified emissions values as tested in the laboratory. As part of China’s...
Published 2018.07.13: Publication

How to think about vehicle bans: An update after two major European judicial decisions

In August and again in December of last year, I was asked to speak about the implications of the surprising surge in public announcements of future bans on certain types of vehicles. At the time, I...There has been a surprising surge in announcements by cities and national governments of future bans on certain types of vehicles. These bans are a signal of growing political will, impatience with...
Published 2018.05.02: Blog Post

Transparency of data in the regulation of vehicle emissions in the European Union and United States

Third-party, confirmatory testing is an important source of credibility in the vehicle type approval process. Access to the vehicle testing data needed to conduct confirmatory testing, however, is...
Published 2017.09.05: Publication

Opel's admissions of defeat device calibrations

A little while ago I blogged about the widespread practice by automakers in the EU of reducing nitrogen oxide (NOx) emission controls at ambient temperatures below 10 °C–17 °C and after a hot restart...Opel admits to reducing vehicle emission controls based on conditions other than ambient temperature or restart. Opel says its “engines are in compliance” in Europe. But, once again, they would not...
Published 2016.06.15: Blog Post

Briefing on the EU Vehicle Emissions Testing Scheme

ICCT organized this briefing in collaboration with Daniel Dalton, MEP, in view of the ongoing discussions over the type-approval framework regulation, to provide Members of the European Parliament...
Published 2016.06.04: Event

Defeat devices under the U.S. and EU passenger vehicle emissions testing regulations

The paper aims to illuminate a paradox: Volkswagen and other automakers have asserted that software managing the emissions control systems on some of their vehicles, which they acknowledge either is...
Published 2016.03.22: Publication

The future of vehicle emissions testing in Europe (and beyond)

At the ICCT we have been analyzing the growing gap between official and real-world vehicle fuel consumption and CO2 emissions of passenger cars in Europe for a few years now. We showed for the first...To solve the problem underlying the growing gap between certification-test and in-use CO2 and NOx emissions, we will have to go beyond just introducing a new test procedure.
Published 2015.11.23: Blog Post

NOx control technologies for Euro 6 diesel passenger cars

Controlling nitrogen oxide (NOx) emissions from Euro 6 diesel passenger cars is one of the biggest technical challenges facing automakers. Euro 6 limits NOx emissions from diesel passenger cars to 80...
Published 2015.09.03: Publication