The EPA has announced the launch of the Cleaner Trucks Initiative (CTI) to further decrease nitrogen oxide (NOx) emissions from on-highway heavy-duty trucks and engines.
The CTI will include a future rulemaking that will update the existing NOx standard which was last set in 2001, while also streamlining compliance and certification requirements.
Acting EPA Administrator, Andrew Wheeler, said, “The Cleaner Trucks Initiative will help modernize heavy-duty truck engines, improving their efficiency and providing cleaner air for all Americans”, adding, “The U.S. has made major reductions in NOx emissions, but it’s been nearly 20 years since EPA updated these standards.
Through rulemaking and a comprehensive review of existing requirements, we will capitalize on these gains and incentivize new technologies to ensure our heavy-duty trucks are clean and remain a competitive method of transportation.”
From 2007 to 2017, U.S. NOx emissions dropped by more than 40 percent, but there is more work to be done. It is estimated that heavy-duty trucks will be responsible for one-third of NOx emissions from the transportation sector in 2025.
EPA expects that any update to the standards will result in significant mobile source NOx reductions, which will aid communities across the country in the attainment of ozone and particulate matter standards.