programs / Heavy-duty vehicles


The steady growth in freight transport by truck presents a challenge to efforts at reducing hazardous air pollution and greenhouse gas emissions. Though most countries have fuel economy standards for passenger vehicles, as of 2011 only Japan and the United States have set efficiency and GHG emission standards for heavy-duty vehicles.

Most heavy-duty vehicles are powered by diesel engines that, without pollution controls, can emit high levels of other pollutants that contribute to global warming  and local air pollution.  For example, uncontrolled diesel vehicles produce high levels of particulate matter, a fraction of which has a warming effect, and nitrogen oxides, which are an ingredient of ozone (also known as smog), an important greenhouse gas. These pollutants are associated with bronchitis, asthma, and other lung diseases, and are responsible for millions of premature deaths worldwide. In 2013, the World Health Organization classified diesel exhaust as carcinogenic to humans, based on evidence of an increase in lung cancer after long-term exposure.

Featured Work



Recently Released

Stakeholder workshop report on tractor-trailer efficiency technology, 2015-2030
Reports on the workshop “Emerging Technologies for Heavy-Duty Vehicle Fuel Efficiency” convened in July 2014 by the American Council for an Energy-Efficient Economy and the International Council on Clean Transportation.
Workshop report
Cost-Benefit Analysis of Mexico’s Heavy-duty Emission Standards (NOM 044)
Results, methods, and underlying assumptions of an ICCT analysis conducted to support the decision-making process for updating NOM 044, demonstrating the cost-effectiveness of matching EPA 2010 or Euro VI requirements to reduce...
Working paper
Integrating trailers into HDV regulation: Benefit-cost analysis
Builds on recent research on the integration of trailers into HDV fuel consumption and GHG emissions regulations to conclude that the U.S. Phase 2 rule presents an opportunity to capture substantial and highly cost-effective...
White paper



Global Sales of Medium and Heavy Duty Vehicles Are Expected to Reach 7.1 Million by 2035 <b>...</b>
... fuel and energy consumed in the road transportation sector...

VW eco-run yields impressive results
Fuel economy run or eco-run as Filipinos know it is a series of...

Five top tips for improving your fleet's <b>fuel economy</b>
Measuring your drivers' fuel economy – the distance they...

Hybrids not necessarily better than diesels, says Emissions Analytics
The advantage of hybrids over frugal diesels is often illusory,...

From the ICCT Blogs

Will a new test procedure solve the problem? Latest developments on EU vehicle testing
Two recent ICCT reports clearly demonstrate the serious on-road problem for CO2 and NOx emissions in Europe. The European Commission is working on it, but the approaches chosen to address the real-world CO2 and NOx problems differ substantially.
Staff Blog
Will GDI engines mean higher particulate emissions? Thanks to already-enacted Tier 3 standards, no
Concerns that engines using gasoline direct injection produce higher particulate emissions overlook two things: the engineering solutions to the problem are already known, and EPA's Tier 3 regulation, which takes effect in 2017, will require them.
Staff Blog
What Paul Krugman gets right, and not quite right, on slow steaming
Slow steaming works: Taking into account longer time at sea and extra ships to cover the lost frequency, slowing down a ship 10% from the design speed means a 9% energy savings. But below a certain speed, tradeoffs begin.
Staff Blog

The Staff

Fanta Kamakaté
Fanta Kamakaté
Chief Program Officer
Nic Lutsey
Nic Lutsey
Program Director / US Co-Lead
Rachel Muncrief
Rachel Muncrief
Heavy-Duty Vehicles Lead
Benjamin Sharpe
Benjamin Sharpe
Senior Researcher / Canada Lead