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

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
Impacts of world class vehicle efficiency and emissions regulations in select G20 countries
Characterizes the climate and health benefits of adopting world-class standards for new vehicle efficiency/CO2 and conventional pollutant emissions in all members of the G20 Transport Task Group.



From the ICCT Blogs

Germany's G20 leadership could expand international cooperation on vehicle efficiency
At the next G20 Summit in July in Hamburg, Germany can lay the groundwork to achieve substantial energy savings and environmental benefits in three important ways.
Staff Blog
Cities driving diesel out of the European car market
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 cities are moving fast to phase out diesel cars, which account for 80% of all NOx emissions from vehicles in Europe.
Staff Blog
Shell game? Debating real-world fuel consumption trends for heavy-duty vehicles in Europe
The EU is about to propose new standards to limit CO2 emissions from heavy-duty vehicles. Some manufacturers are still trying to persuade policy makers that regs aren't necessary because truck fuel-efficiency really is improving significantly on its own. Don't be fooled; on average, it isn't.
Staff Blog