Government, Business, Technology, Equipment, Fuel

Industry Leaders Raise Concern About Proposed EPA NOx Rule

Cummins hydrogen tractor Most OEMs, like Cummins, support stronger NOx requirements and efforts to reduce emissions eventually down to zero. (Cummins Inc.)

The Environmental Protection Agency is proposing its first new rules governing heavy-truck nitrogen oxide emissions in two decades, but engine manufacturers say the proposals would be difficult to meet and counterproductive because they could slow the move to cleaner technology.

Steve Brawner | Special to Transport Topics
May 9, 2022
Government, Business, Technology, Equipment, Fuel

Diesel Engine Makers Need to Innovate to Meet Stricter NOx Emission Standards

truck getting EPA test A truck is being readied for testing of its emissions levels at the EPA emissions laboratory in Ann Arbor, Mich. (Environmental Protection Agency)

As state and federal clean-air regulators move forward with plans to further reduce nitrogen oxide and particulate matter emissions from commercial trucks, diesel engine makers are exploring new technologies to meet those targets in the coming years.

John Baxter | Special to Transport Topics
May 10, 2021
Government, Business, Technology, Fuel

Have EPA, CARB Reached Détente Over Emission Policy?

truck exhaust Getty Images

Almost since Donald Trump moved into the White House, the Environmental Protection Agency and California Air Resources Board have been in a political war over the direction of U.S. environmental policy. Can there be a thaw in the works now that EPA has announced plans to begin an “environmental review” to reduce nitrogen oxide emissions for heavy trucks?

Eric Miller | Senior Reporter
November 29, 2018
Government, Fuel

State, Local Agencies Petition EPA for National Truck Rule on NOx


With publication of the Phase 2 federal greenhouse-gas final rule for trucks expected soon, 12 agencies from state and local government have petitioned the Environmental Protection Agency to quickly produce a national rule that would tighten nitrogen-oxide emissions from trucks.

Jonathan S. Reiskin | Associate News Editor
July 11, 2016
Government, Fuel

California Pushes EPA to Lower NOx Limit as Part of GHG Rule for Heavy Trucks

Jamie Rector/Bloomberg News

California environmental regulators said they plan to begin development of tougher nitrogen oxide standards for heavy trucks, possibly as early as 2017.

Eric Miller | Senior Reporter
October 12, 2015