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Just one more diesel car?

As the debate over local air quality intensifies in Delhi, the Supreme Court of India is considering whether to continue the restriction on sale of diesel cars with engines larger than two liters in...Another possible option beyond levying a punitive fee on diesel vehicles or banning their sale would be for diesel vehicle manufacturers to voluntarily agree to equip all new diesel vehicles sold in...
Published 2016.05.27: Blog Post

Should Delhi ban diesels?

Next week the verdict will be in on whether Delhi Chief Minister Arvind Kejriwal achieved any meaningful reductions in vehicle emissions with his “odd-even” scheme to cut down on the number of...The health evidence on diesels justifies actions that extend restrictions on diesels until they are cleaner. The court should consider a new tax scheme on diesels to pay for their health damages or...
Published 2016.04.29: Blog Post

First look: Results of the German transport ministry's post-VW vehicle testing

In September 2015, shortly after it became known that Volkswagen applied illegal defeat devices in some of its diesel vehicles, the German Ministry for Transport (BMVI) commissioned a series of...Germany, the UK, and France last week released results of testing they commenced after VW admitted to using defeat devices to circumvent emissions tests. The situation seems even worse than expected...
Published 2016.04.25: Blog Post

Technical background on India BS VI fuel specifications

The proposed Bharat Stage (BS) VI regulation for on-road vehicles in India includes contains both emission standards for new vehicles as well as specifications for reference and commercial gasoline...
Published 2016.04.22: Publication

India Bharat Stage VI emission standards

On February 19, 2016, the Indian Ministry of Road Transport and Highways (MoRTH) issued a draft notification of Bharat Stage (BS) VI emission standards for all major on-road vehicle categories in...
Published 2016.04.22: Publication

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

Deficiencies in the Brazilian PROCONVE P-7 and the case for P-8 standards

DOWNLOAD PORTUGUESE VERSION (PDF) In January 2012, Brazil implemented the PROCONVE P-7 emission standards for heavy-duty vehicles (HDVs) to replace the previous P-5 standards (Euro III-equivalent)....
Published 2016.03.11: Publication

Environmental risks of diesel passenger vehicles in Brazil

DOWNLOAD PORTUGUESE VERSION (PDF)   Although Brazil has restricted the sale of diesel passenger cars since the 1970s, an auto industry lobby has been pressuring the government to lift the...
Published 2016.03.11: Publication

Cost-benefit analysis of Brazil's heavy-duty emission standards (P-8)

DOWNLOAD PORTUGUESE VERSION (PDF) Brazil has controlled heavy-duty vehicle (HDV) emissions through the Programa de Controle da Poluição do Ar por Veículos Automotores (PROCONVE) since 1990,...
Published 2016.03.01: 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

Review of Beijing's comprehensive motor vehicle emission control programs

Transportation is a key contributor to air pollution in urban areas. Beijing, a city with historically poor air quality, has implemented new standards and programs to combat vehicular emissions....
Published 2015.11.05: Publication

The miseducation of the diesel car

I recently read an open letter in the Corriere della Sera by a VW engineer working on engine development and emissions (that’s what I call a hot seat!). The letter contains some pretty remarkable...The preliminary agreement on the EU's Real-Driving Emissions regulation is a missed opportunity to address the air-quality problem by forcing the technological adjustments required to bring real...
Published 2015.11.04: Blog Post

What EU cars’ CO2 emissions have in common with supermarket prices

When you think back to your most recent stop at the supermarket, you will probably recall that most of the price tags you saw ended with the digit "9". Maybe 99 cents for a chocolate bar and 49 cents...It’s about 15 times more likely that the official CO2 emission level of a new car sold in the EU is something-"9" g/km than something-"1”. And there’s a remarkable correlation between that phenomenon...
Published 2015.10.14: Blog Post

Policy solutions to reduce vehicle exhaust emissions under real-world driving conditions

Policymakers worldwide are looking for ways to address the challenge of controlling real-world emissions brought to forefront by the Volkswagen case. In this position brief, we propose a rapid and...
Published 2015.10.01: Publication

Dispelling some myths about the gap between test-lab and real-world vehicle CO2 emissions

We've just released the annual update to our From Laboratory to Road series, which documents the growing gap between official, or type-approval, CO2 emissions from passenger cars in Europe and their...An explanation of what has and has not caused the gap between test-lab and real-world vehicle CO2 emissions to increase by over 30 percentage points in just over a decade.
Published 2015.09.30: Blog Post

Brazil is not ready for diesel cars

The Portuguese version of this blog was developed by Instituto de Energia e Meio Ambiente (IEMA). Sales of diesel passenger cars and commercial vehicles with capacity inferior to 1,000 kg have been...Brazil should hold the line and continue to ban sales of diesel passenger cars.
Published 2015.09.28: Blog Post

Testing the dirty diesels too

The new head of Secretariat of the Environment and Natural Resources (SEMARNAT), Rafeal Pacchiano Alamán, has announced that Mexico will undertake a real-world, in-use testing program for diesel...Mexico's newly announced real-world testing program for diesel vehicles is a great step. Unfortunately, we already know they won’t be clean. So there are other steps to take.
Published 2015.09.28: Blog Post

China's commitment to improving heavy-duty vehicle efficiency [Press statement]

Last Friday, during President Xi Jinping’s visit to Washington, DC, China announced further significant steps to limit greenhouse gas emissions. Among the important elements of China’s strategy is a...
Published 2015.09.28: News

FAQ: In-use NOx emissions from diesel passenger cars

As the story concerning in-use NOx emissions from diesel passenger vehicles continues to unfold, a number of questions concerning the ICCT's past and on-going research into discrepancies between...
Published 2015.09.25: News

Why heavy-duty engine standards put India on the best path forward

Last week, my colleague Anup Bandivadekar and I held a webinar to discuss the heavy-duty truck and bus market in India and considerations for an upcoming regulatory program to improve the fuel...Efficiency standards for engines are the most advantageous regulatory design option for India to maximize near-term fuel savings and emission reduction benefits from new heavy-duty vehicles. Engine...
Published 2015.08.25: Blog Post