"WASHINGTON - The U.S. Environmental Protection Agency will announce plans to propose new rules to significantly decrease emissions of smog-forming nitrogen oxide from diesel-powered heavy-duty trucks, an agency official said.
Industry groups and state environmental officials have urged the EPA to set new nationwide rules as the state of California has been moving forward with plans to set new state emissions limits. California also wants nationwide rules, in part because more than half of all trucks delivering goods in the state are registered in other states.
The EPA said in a statement it had scheduled a formal announcement on Tuesday with industry executives and state environmental officials regarding its “Cleaner Trucks Initiative,” but did not immediately disclose details. The effort to impose a new regulatory limit by the EPA comes as the Trump administration has generally touted its efforts to eliminate regulations. But the effort on nitrogen oxide (NOx) is backed by industry, which wants to avoid a patchwork of federal and state standards, the official said."
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