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The reductions in passenger vehicle emissions that have been achieved since the mid-twentieth century are a great environmental success story. Government regulation of tailpipe emissions and private investments in breakthrough technologies such as the three-way catalytic converter have reduced emissions of nitrogen oxides, carbon monoxide, and hydrocarbons by 75 to 90 percent at a relatively small cost to consumers. Since California first established emission standards for passenger vehicles in the 1960s, different regulatory approaches have been adopted by the United States, Japan, and Europe, and each has been emulated to some degree in other parts of the world. Significant work remains to replicate these successes throughout the rest of the global fleet.

The massive impact of passenger vehicles on climate also remains to be addressed. The transportation sector is responsible for about one-quarter of energy-related greenhouse gas emissions worldwide. Passenger vehicles account for just under half of this total, and will remain the predominant source of these emissions for the foreseeable future.

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Proposed new type-approval system for motor vehicles in the European Union
Summary of proposal to overhaul the legal framework for ensuring that vehicles meet all environmental and other regulatory requirements, with a focus on market surveillance, better enforcement practices, and vehicle recalls.
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Oil market futures: Effects of low-carbon transport policies on long-term oil prices
Oil prices will be lower in the future if low-carbon transport technologies are mass deployed, as these technologies will drive a significant reduction in global demand for oil.
Consulting report
Technical background on India BS VI fuel specifications
This working paper details the differences in fuel specifications for commercial gasoline and diesel fuels in India and the EU, and assesses potential air pollutant emission impacts of these differences.
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From the ICCT Blogs

Should Delhi ban diesels?
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 implement a restriction similar to German law, which permits only BS VI engines.
Staff Blog
Defeat device testing in the EU: So far, not so good
The post-VW vehicle testing by Germany, the UK, and France suggest that defeat devices are being employed in Europe that have yet to be detected. But further testing is needed if the goal is to independently determine the actual cause of the high emissions.
Staff Blog
First look: Results of post-VW diesel vehicle testing in France, UK
Further summary of initial results of diesel emissions screening tests being conducted in Europe in the wake of last year's revelations about VW's use of defeat devices.
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The Staff

Anup Bandivadekar
Anup Bandivadekar
Program Director / India Lead
Vicente Franco
Vicente Franco
Senior Researcher
John German
John German
Senior Fellow / US Co-Lead
Hui He
Hui He
Senior Policy Analyst / China Co-Lead
Fanta Kamakaté
Fanta Kamakaté
Chief Program Officer
Peter Mock
Peter Mock
Europe Managing Director / EU Lead
Peter Slowik
Peter Slowik
Associate Researcher