initiatives / Clean Air


Motor vehicle emissions harm public health and the environment. The ICCT estimates that exposure to vehicle emissions in the year 2005 produced at least 242,000 global early deaths. Emissions of fine particulate matter, ozone-precursors, air toxics and other harmful pollutants also produce environmental damage in the form of crop fertility losses and near-term climate warming.

Featured Work



Recently Released

Low-carbon technology pathways for soot-free urban bus fleets in 20 megacities
Evaluates well-to-wheel greenhouse gas emissions from soot-free urban transit bus types in 20 megacities.
Working paper
Status of policies for clean vehicles and fuels in select G20 countries
Reveals that the efforts made by multiple Transport Task Group (TTG) countries to promote and support policies and programs—including stringent tailpipe emissions standards, fuel economy standards, low sulfur fuels, and green...
Impacts and mitigation of excess diesel NOx emissions in 11 major vehicle markets
Diesel vehicles in major markets produce over 50% more NOx than official certification limits indicate. Study links these excess NOx emissions to ~38,000 premature deaths worldwide in 2015—mostly in the EU, China, and India. 

From the ICCT Blogs

Italy’s car market needs to make a U-turn
Between minuscule electric vehicle (EV) sales, growing diesel shares, and Italian carmakers’ struggle to curb carbon dioxide (CO2) and nitrogen oxide (NOx) emissions, there is no doubt that Italy is heading in the wrong direction, but it’s not too late for a U-turn.
Staff Blog
Why (Run on) Less is more…
Run on Less is more evidence that cost-effective, high-efficiency trucks are on the road today and only getting better.
Staff Blog
Will the future RDE regulation be enough to restore trust in diesel technology?
The success of the RDE regulation will depend on the will of manufacturers to prove that they have learned a lesson from Dieselgate by beginning to focus on reducing real-world emissions, not just on passing a particular test.
Staff Blog