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The role of standards in reducing CO2 emissions of passenger cars in the EU

The origin of the EU vehicle CO2 regulation is by now a well-known story. European car manufacturers promised to voluntarily reduce average CO2 emissions of new cars to 140 g/km by 2008, starting in...
Published 2018.02.12: Publication

Real-world emissions in China: A meta-study of PEMS data

Vehicle emissions control programs in China have made considerable progress, mainly attributed to the uptake of emissions control technologies driven by increasingly stringent standards and improved...
Published 2018.02.12: Publication

Remote sensing of motor vehicle exhaust emissions

This report provides a comprehensive overview of vehicle remote sensing, an emissions measurement technique which has been used for more than 25 years to evaluate emissions from passing motor...
Published 2018.02.01: Publication

U.S. and Canada: On vehicle emissions compliance and enforcement, two feds are better than one

It’s hard to overstate the importance of the Volkswagen Dieselgate scandal in terms of raising international awareness around the critical importance of having robust provisions in place to monitor...As both U.S. and Canada work to improve their C&E programs, we applaud their team effort to tackle air quality challenges, encourage them to continue to strengthen this partnership, and hope to...
Published 2018.01.22: Blog Post

Naming and shaming manufacturers only works if you have a strong regulator

Defeat devices, airbags that spray metal shards when they deploy, malfunctioning exhaust catalysts . . . what next will cause car manufacturers to recall hundreds of thousands of vehicles? Nissan,...Even though Japan’s compliance and enforcement program is one of the most comprehensive, it could still be improved. Japan has an outsize influence on compliance and enforcement worldwide because it...
Published 2018.01.17: Blog Post

VW defeat devices: A comparison of U.S. and EU required fixes

Following the revelations that Volkswagen had embedded defeat devices in its software calibrations for all of its 2009–2014 diesels in Europe and 2009–2015 diesels in the US, regulatory agencies have...
Published 2017.12.14: Publication

How well are governments enforcing vehicle emissions standards? Worldwide, the answer is: Not as well as they could be

New survey-based study shows notable disparities in compliance activities, accomplishments among most important global vehicle markets Washington DC—A new study cataloging and evaluating the efforts...
Published 2017.11.14: News

Umsetzung der Abgasgesetzgebung für Fahrzeuge weltweit oft unzureichend, insbesondere in der EU bislang ineffektive Umsetzung und Nachkontrolle

Eine neue Studie der unabhängigen Forschungsorganisation International Council on Clean Transportation (ICCT) untersucht, wie effektiv die verantwortlichen Behörden der wichtigsten Fahrzeugmärkte...
Published 2017.11.14: News

Global baseline assessment of compliance and enforcement programs for vehicle emissions and energy efficiency

As vehicle pollution and fuel efficiency regulations have become more stringent, the technologies required to mitigate emissions and reduce fuel consumption become increasingly complex. One...
Published 2017.11.14: Publication

ICCT wins 2017 Climate and Clean Air Award for Transformative Action

Bonn, November 12, 2017: The 2017 Climate and Clean Air Award for Transformative Action has gone to the International Council on Clean Transportation (ICCT), for its initiative to conduct checks of...
Published 2017.11.12: News

A step forward in Europe on measuring in-use vehicle emissions

[This post originally appeared on the TRUE initiative website,, 16 Oct 2017] On 28 September 2017 three Members of the European Parliament, Kathleen Van Brempt (Beligum),...In September three MEPs convened a fruitful discussion on using remote sensing technology to measure pollutant emissions in vehicle exhaust in Europe’s cities.
Published 2017.10.23: Blog Post

London’s Clean Car Checker enables consumers to buy the cleanest vehicles

[This post originally appeared on the TRUE initiative website,, on 17 Oct 2017] Last week the city of London released its Clean Car Checker that provides consumers with real-...The city is taking a big step forward in fighting air pollution, and other cities would benefit from doing the same.
Published 2017.10.23: 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

Road tested: Comparative overview of real-world versus type-approval NOX and CO2 emissions from diesel cars in Europe

In September 2015, when the news broke about the illegal defeat device used by Volkswagen in the United States, no systematic overview of real-world NOx emission levels by vehicle manufacturer and...
Published 2017.09.03: Publication

Market surveillance of vehicle emissions: Best-practice examples with respect to the European Commission's proposed type-approval framework regulation

On January 27, 2016, the European Commission (EC) proposed a new motor vehicle type-approval framework that will, if adopted, make fundamental and far-reaching changes to the existing Framework...
Published 2017.07.13: Publication

Like magic! How to make high vehicle CO2 emissions simply disappear

Ask people on the streets in Germany who they think is the most famous magician ever, and the name you would probably hear most is David Copperfield. Almost everyone knows him and is fascinated by...On June 26, the BMVI finally published the CO2 measurement results we had been waiting for. But in the interim the Ministry re-tested 29 of the original vehicle models. Only a subset of those results...
Published 2017.07.03: Blog Post

Compliance and enforcement

ICCT research and analyses have played crucial roles in illuminating the scale and scope of disparities between vehicle-efficiency targets or pollutant emissions standards and “real-world”...
Published 2017.06.23: Landing Page

Subsidy fraud leads to reforms for China’s EV market

As the largest auto market in the world, China has been committed to promoting electric vehicles (EVs) since 2009; the country aims to have 5 million EVs on Chinese roads by 2020. To reach this...Policy adjustments, created largely in response to the high-profile subsidy fraud scandal, mark major reforms for China’s EV market. As an old Chinese saying goes, “A loss may turn out to be a gain...
Published 2017.05.30: Blog Post

Impacts and mitigation of excess diesel NOx emissions in 11 major vehicle markets

A new study published online May 15 in the journal Nature quantifies the global health and environmental burden of real-world diesel NOx emissions in 11 major vehicle markets. The study found that...
Published 2017.05.22: Event

Cities driving diesel out of the European car market

Diesel car registrations are down in Europe: March 2017 saw a 5-year low in France, Germany, Spain, and the UK, which together make up almost 60% of the European new car market. Dieselgate sparked...European governments have strong incentives to discourage diesel technology and national governments could face fines for failing to meet ambient air quality standards for NOx. As a result, several...
Published 2017.05.16: Blog Post