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From laboratory to road: A 2018 update

This 2018 update of the From Laboratory to Road series covers approximately 1.3 million passenger cars from 15 data sources and eight European countries. The update shows that in 2017, for the first...
Published 2019.01.10: Publication

Market analysis of heavy-duty commercial trailers in Europe

Heavy-duty vehicles (HDVs) are currently responsible for about one-fourth of fuel consumption and greenhouse gas emissions from the transport sector in the European Union. Within the HDV sector in...
Published 2018.09.24: Publication

Transatlantic airline fuel efficiency ranking, 2017

This report compares the fuel efficiency of 20 airlines operating nonstop flights between the mainland United States and Europe. It uses the same methodology as in the 2016 transpacific fuel...
Published 2018.09.11: Publication

Evaluation of real-world fuel consumption of light-duty vehicles in China

There is growing evidence globally and in China of the gap between laboratory test findings and real-world carbon dioxide (CO2) emissions and fuel consumption. Building on previous work, this project...
Published 2018.06.21: Publication

Fuel consumption simulation of HDVs in the EU: Comparisons and limitations

The CO2 certification procedures for HDVs in the EU and the United Stated use a combination of component testing and vehicle simulation to assign official CO2 emission and fuel consumption values....
Published 2018.03.06: Publication

EU HDVs: Cost effectiveness of fuel efficiency technologies for long‑haul tractor‑trailers in the 2025‑2030 timeframe

In the European Union, CO2 emissions from commercial vehicles grew much faster than from passenger vehicles from 1990 to 2014. Trucks and buses now produce about a quarter of CO2 emissions from road...
Published 2018.01.16: Publication

From laboratory to road: A 2017 update

This 2017 update of the From Laboratory to Road series covers 1.1 million passenger cars from 14 data sources and eight European countries. The analysis shows that the gap between official and real-...
Published 2017.11.05: Publication

From laboratory to road international: A comparison of official and real-world fuel consumption and CO2 values for passenger cars in Europe, the United States, China, and Japan

This study investigates the gap between real-world and official CO2 emission values in the four largest vehicle markets in the world: China, the EU, Japan, and the United States. The analysis shows...
Published 2017.11.05: Publication

Fuel efficiency technology in European heavy-duty vehicles: Baseline and potential for the 2020–2030 timeframe

Heavy-duty vehicles produce about a quarter of all carbon dioxide (CO2) emissions from road transport in the European Union (EU), and some 5% of the EU’s total greenhouse gas emissions. Their share...
Published 2017.07.16: Publication

Light-commercial vehicles in India, 2014-15: Technology assessment and international comparisons

The fleet average CO2 emissions for LCVs were 157.6 g/km in FY 2014-15. For the M2 category, the fleet average emissions were 238.1 g/km. Our analysis shows that even though the EU’s LCVs have higher...
Published 2016.12.23: Publication

Driving resistances of light-duty vehicles in Europe: Present situation, trends, and scenarios for 2025

The driving resistances—mass, aerodynamic drag, and rolling resistance—of a vehicle directly affect fuel consumption and CO2 emissions. Reducing driving resistances can significantly aid...
Published 2016.12.15: Publication

From laboratory to road: A 2016 update

This 2016 update to a series begun in 2013 analyzes 13 data sources covering 15 years, six countries, and approximately 1 million cars. The analysis shows that, in the EU, the gap between official...
Published 2016.11.16: Publication

U.S. domestic airline fuel efficiency ranking, 2014

This study, the fourth in a series of yearly analyses of U.S. airlines on domestic operations, arrives as we near a potential turning point for public policy concerning aviation and the environment....
Published 2015.10.22: Publication

From laboratory to road: A 2015 update

This 2015 update to a series begun in 2013 analyzes eleven data sources covering fourteen years, six countries, and almost 600,000 vehicles. The analysis shows that in the EU the gap between official...
Published 2015.09.24: Publication

Literature review: Real-world fuel consumption of heavy-duty vehicles in the United States, China, and the European Union

In contrast to passenger cars, data on HDV fuel efficiency are not readily available. That is the primary motivation for this literature review, which provides a summary of recent data on real-world...
Published 2015.02.09: Publication

Development of test cycle conversion factors among worldwide light-duty vehicle CO2 emission standards

Comparing the light-duty vehicle fuel efficiency standards in effect in the world's largest auto markets is not a simple, straightforward process, because any fair, apples-to-apples comparison must...
Published 2014.12.03: Publication

New light commercial vehicles in China, 2010: Technology assessment and international comparisons

This paper assesses fuel consumption and fuel-efficiency technology adoption in China’s light commercial vehicle (LCV) market in 2010, focusing on the differences among vehicle sub-categories and...
Published 2014.10.21: Publication

Integrating trailers into HDV regulation: Benefit-cost analysis

The United States Environmental Protection Agency and the Department of Transportation are deliberating on a second phase of regulations to increase the efficiency of heavy-duty vehicles. One of the...
Published 2014.07.17: Publication