Biden’s push to slash truck pollution has a hidden loophole
When engines come off the assembly line, they’ll have to meet emissions limits more than 80% stronger than current standards. The provisions will drive a nearly 50% drop in nitrogen oxide emissions from heavy-duty trucks on the road in 2045, the EPA estimates. Additional on-road tests are supposed to ensure that pollution doesn’t creep up when the engines are used in the real world.
The exemption came at the behest of the Truck and Engine Manufacturers Association, a small-but-mighty trade group. Laboratory tests commissioned by the group used cold air blown over a sample engine to show that emissions increased below 77F. Tightening pollution controls would require more heat, using more fuel and boosting greenhouse gas emissions, the association said.
CARB was already doing real-world emissions monitoring on trucks in operation — but in contrast to the industry-sponsored lab tests, California’s data showed pollution controls still worked when temperatures dipped.
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