Regulations for Smog, Soot, and Other Air Pollution from Commercial Trucks & Buses
EPA regulates commercial trucks and buses as onroad "heavy-duty." Most of the regulations are related to diesel engines, but there are also regulations that to gasoline-fueled and other spark-ignition engines. The requirements apply to engines installed in all vehicles with Gross Vehicle Weight Rating above 14,000 pounds, and to some engines installed in vehicles with Gross Vehicle Weight Rating between 8,500 and 14,000 pounds.
List of Petitions
On November 13, 2018, EPA announced the Cleaner Trucks Initiative, which will include a future rulemaking to establish updated standards to address nitrogen oxide (NOx) emissions from highway heavy-duty trucks and engines.
Petitions requesting an updated NOx standard for heavy duty trucks and buses are below. For other petitions involving the Office of Air and Radiation, please visit: Petitions to the Office of Air and Radiation.
|Petitions Title||Petitions Date
|Petitions for Revised NOx Standards for On-highway Heavy-duty Engines and Trucks||2016/12|
List of Related Regulations
Below is a list of all regulations related to smog, smoot, and other air pollution from commercial trucks and buses.
- Rule summaries;
- Regulatory impact analyses;
- Comment summaries;
- Rule histories; and
- Fact sheets.*
*Note: Rule-related materials vary by rule.