Green Car Congress

AUGUST 15, 2019

Long-term exposure to ambient air pollutants, especially O 3 (ozone), is significantly associated with increasing emphysema, according to a new study led by the University of Washington, Columbia University and the University at Buffalo. The annual averages of ozone levels in study areas were between about 10 and 25 ppb.

Pollution 223

Pollution Ozone Washington Universal 223

Green Car Congress

JANUARY 7, 2020

From 2007 to 2017, US NO x emissions dropped by more than 40%. The EPA Administrator announced in November 2018 that EPA would pursue the Cleaner Trucks Initiative (CTI) to update NO x emissions standards for heavy-duty trucks. EPA last revised NO x standards for on-highway heavy-duty trucks and engines in January 2001.

EPA 150

EPA Ozone Clean Cleaning 150

Green Car Congress

SEPTEMBER 19, 2019

The action finalizes parts of the SAFE Vehicles Rule that was first proposed on 2 August 2018. The California waiver authority exists because California has uniquely difficult problems with ozone-forming pollutants. Earlier post.)

Fuel Economy 220

Fuel Economy EPA Economy Fuel 220