Remote sensing of emissions has a number of important characteristics that make it particularly useful for real-world emissions surveillance.

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 transport in the EU, and that share is growing as emissions from cars and vans decline further to meet increasingly tight CO2 standards.

As vehicle pollution and fuel efficiency regulations have become more stringent, the technologies required to mitigate emissions and reduce fuel consumption become increasingly complex.

Analyzes the benefits of establishing separate engine CO2 standards in addition to full-vehicle regulations to specifically drive improvements in heavy-duty engine efficiency.

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 is growing, as emissions from cars and vans decline in response to increasingly stringent CO2 standards for those vehicles.

This briefing paper identifies key differences in the regulations governing certification of NOX emissions from diesel cars (Euro 6) and trucks (Euro VI) that help explain

Heavy-duty vehicles (HDVs) represent only 4% of the on-road fleet in the European Union, but are responsible for 30% of on-road CO 2 emissions. Countries around the world are implementing standards to regulate CO2 emissions from HDVs.

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 and makes recommendations on how to improve HDV I/M programs in the future.

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.

Controlling emissions from the in-use fleet, particularly from high emitters and older vehicles, can immediately alleviate urban air pollution. As pressure to address China's air quality issues builds, Guangdong Province has taken several steps toward that end.