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sustainable-freight-transportation-california-takes-the-lead
sustainable-freight-transportation-california-takes-the-lead

Sustainable freight transportation: California takes the lead

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According to the US Environmental Protection Agency (EPA), the transportation sector is one of the largest contributors to anthropogenic US greenhouse gas (GHG) emissions, accounting for 28% of total GHG emissions in 2016. Cars and light duty vehicles lead the pack of polluters, but trucking is the second leading source of transportation end-use sector emissions. Light and heavy duty trucks represent 23% of emissions in the transportation sector.

EPA and the National Highway Traffic Safety Administration (NHTSA) are taking coordinated steps to enable the production of a new generation of clean vehicles. While much has improved over the years with clean air regulations, EPA still expects that heavy-duty trucks will be responsible for one-third of nitrogen oxide (NOx) from transportation in 2025 and recently announced the Cleaner Trucks Initiative (CTI) to update standards for NOx emissions from highway heavy-duty trucks and engines.

In 2011, EPA in coordination with NHSTA, issued greenhouse gas emissions and fuel economy standards for medium and heavy duty trucks manufactured in model years 2014-2018. The agencies estimate that the combined standards will reduce CO2 emissions by about 270 million metric tons.

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