The U.S. EPA has accused Fiat Chrysler of failing to disclose engine management software that increased air pollution in 104,000 diesel-powered Ram 1500...

A local rule requires warehouse operators in Southern California to track truck trips to their facility and prepare to pay hefty annual fees for total...

Unlike passenger vehicles, which require biennial smog checks in California, heavy-duty diesel trucks are not currently required to undergo regular...

The new California Air Resources Board standard mandates that by 2045, every new truck sold in California will be zero-emission.

Several members of Congress have asked the inspector general of the Environmental Protection Agency to look into allegations that there was improper contact...

Diesel-powered trucks appear to be in the crosshairs once again as California legislators, citing overwhelming public support, call for even tougher...

The California Air Resources Board has penalized LKQ Corporation for selling used diesel particulate filters, which is illegal in the State of California.

EPA's proposal would reduce heavy-duty engine emissions during a broader range of operating conditions that span nearly all in-use operations, such as...

Oregon's new rules will speed the transition to electric and lower-emissions trucks, buses, and vans, and likely will inspire other states to also adopt the...

Pennsylvania is accepting grant applications to replace, repower, or retrofit fleet diesel-powered trucks, buses, and other vehicles and equipment.

Cummins showed off an emissions reduction concept that promises drastic reductions to NOx and particulate matter emissions in future diesel engines.

The EPA is looking to establish more stringent heavy-duty diesel truck emission standards for oxides of nitrogen (NOx) and other pollutants. The exact rule...

The South Coast AQMD released Program Announcements for the 2020 Carl Moyer Program, including the SOON (Surplus Off-Road Opt-In for NOx) Provision....

The mayors of Paris, Mexico City, Madrid, and Athens have pledged to ban diesel vehicles from their cities by 2025 in an effort to improve air quality.

Denso announced it has expanded its PowerEdge diesel aftertreatment products line to include light- and medium-duty trucks and vans.

The U.S. Environmental Protection Agency (EPA) announced that $26 million in grant funding will be made available to establish clean diesel projects with...

U.S. Senator Tom Carper (D-Del.) has introduced a bill to extend the Diesel Emissions Reduction Act (DERA) through 2021 to continue to provide EPA grants to...

Southern California Gas and Western Milling unveiled the first of a planned 30 new ultra-low emissions trucks the company will deploy at its operations in...

Seemingly acting out of character, the Environmental Protection Agency on Nov. 13 announced it will launch a rulemaking to further cut the emission of...

A large group representing manufacturers, transportation associations, and clean air and health advocates sent a letter to the House of Representatives...

After a court challenge stymied its efforts to give makers of glider kits a reprieve from challenged provisions of its greenhouse gas regulations, the...

The U.S. Environmental Protection Agency has fined Premier Performance of Rexburg, Idaho, one of the nation’s largest sellers of aftermarket automotive...

Millions of dollars in settlements from the VW diesel emissions cheating scandal will be made available for clean vehicle technology in California and...

Two Democratic senators who oversee environmental issues sent a letter on March 12 to Environmental Protection Agency Administrator Scott Pruitt, urging him...

The EPA is serious about further reducing exhaust emissions and boosting vehicle fuel economy. But the agency official’s remarks suggested that it intends...

Volvo Group stock fell after the Sweden-based truck and engine maker announced it was investigating the potential failure of a critical emissions control...

The California Air Resources Board has announced a public hearing on a proposed rule change that would extend maintenance support for faulty emissions...

Ontario will increase its focus on truck emissions in 2020 as the Canadian province prepares to crack down on anyone that bypasses emissions controls – and...

As part of a broad-reaching clean air program, California has proposed a low-NOx engine standard for heavy trucks. Truck and engine makers have said in the...

Four Republican lawmakers are spearheading an effort to audit a 2017 EPA study that found that glider kits emit substantially more harmful pollutants than...