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

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. 
Alternatives to heavy fuel oil use in the Arctic: Economic and environmental tradeoffs
Compares the economic and environmental tradeoffs of switching from HFO to two alternative fuels, distillate fuel and liquefied natural gas (LNG), in the IMO Arctic, as defined in the IMO Polar Code.
Working paper

From the ICCT Blogs

Maximizing aircraft fuel efficiency: Don’t skimp on R&D
An interview with Dr. Fay Collier, Associate Director for Flight Strategy, Integrated Aviation Systems Program at NASA Aeronautics and a former Project Manager at NASA Environmentally Responsible Aviation (ERA), on NASA’s contribution to technologies already in use on aircraft flying now, the ERA project, and a new NASA initiative to demonstrate these environmentally responsible aviation technologies. 
Staff Blog
New energy efficiency target for cars could help Brazil compete in international markets
Aligning Brazil's new-car efficiency target with the European Union’s target would have substantial benefits for consumers. Compared to a car meeting Inovar-Auto's 2017 target, the average new car sold in 2023 could reduce fuel costs more than 4,000 USD over the lifetime of the vehicle, equivalent to 2.4 times the cost of additional vehicle technology.
Staff Blog
Maximizing aircraft fuel efficiency: Engines matter
A conversation with Dr. Meyer (Mike) J. Benzakein on the importance of developing fuel efficient engines.
Staff Blog