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

Review of Current Practices and New Developments in Heavy-Duty Vehicle Inspection and Maintenance Programs
Inspection and maintenance (I/M) programs are key to identifying high-emitting vehicles and mitigating their impact on air quality and climate. This paper assesses best practices for I/M programs targeting heavy-duty vehicles...
White paper
Market analysis of heavy-duty vehicles in India
Comparative analysis of HDV sales in India in terms of manufacturer market share and vehicle characteristics. Additional discussion of engine attributes aimed at developing a categorization scheme.
Working paper
Assessment of Heavy-Duty Natural Gas Vehicle Emissions: Implications and Policy Recommendations
Analyzes the implications of a growing natural gas vehicle fleet on the emission benefits of the U.S. HDV “Phase 2” greenhouse gas rulemaking, synthesizing data on upstream emissions, vehicle emissions, and efficiency technology...
White paper



Obama Takes Climate Message to Alaska, Where Change Is Rapid
On the third day of his visit to Alaska, President Obama...

Obama, Visiting Arctic, Will Pledge Aid to Alaskans Hit by Climate Change
He will step up government aid for Arctic communities whose...

arbcombo -- CARB Diesel and LSI Compliance Training: SEPTEMBER-OCTOBER 2015
The California Air Resources Board is offering the following...

arbcombo -- Thursday ARB Research Seminar: National Bicycle Policy in Germany
Presentation is available for downloading .

Comments on RFS 2014-2016 RVO
ICCT comments to the U.S. EPA on proposed volumes for the...

Press roundup, April 2015

Press roundup, March 2015

Request for Proposals: Fuel and Vehicle Flows in Western and Southern Africa
Summary The ICCT is seeking an experienced consulting group or...

From the ICCT Blogs

Estimating the costs of vehicle efficiency: Will the European Commission incorporate lessons from experience?
Draft vehicle technology cost curves for post-2020 CO2 standard were presented to the European Commission in late July. Here's how they look in light of earlier (not always accurate) estimates.
Staff Blog
Will new U.S. truck standards bring “SuperTrucks” to the market?
Compared with the U.S. Deptarment of Energy SuperTruck demonstrations, just how “Super” are the proposed US tractor-trailer standards for model year 2027? Not very.
Staff Blog
Why heavy-duty engine standards put India on the best path forward
Efficiency standards for engines are the most advantageous regulatory design option for India to maximize near-term fuel savings and emission reduction benefits from new heavy-duty vehicles. Engine standards also pave the way toward more comprehensive, simulation-based full vehicle efficiency standards.
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