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.

At the North American Leaders Summit (NALS) in June 2016, the heads of the governments of Canada, Mexico, and the United States agreed to “commit to reduce air pollutant emissions by aligning air pollutant emission standards for light- and heavy-duty vehicles and corresponding ultralow-sulfur fuel standards by 2018.” To support regulatory effort

In August 2017 the government of India published final fuel-efficiency standards for commercial heavy-duty vehicles. The standards are the government’s response to India’s rapidly growing commercial vehicle sector.

In September 2017, China’s Ministry of Environmental Protection issued the first national standard for portable emission measurement system (PEMS) testing of heavy-duty vehicles (HDVs).