Engine manufacturers using selective catalytic reduction (SCR) emission control technology have new federal guidance allowing them to more gradually “derate” systems when diesel exhaust fluid (DEF) ...

It appears you're visiting this site with a browser that is old and unsupported. To continue using this site and its features, you will need to use a newer browser. EPA Administrator Lee Zeldin, ...

The Environmental Protection Agency (EPA) has issued new guidance regarding diesel exhaust fluid (DEF) systems in diesel engines that cause trucks and tractors to enter “limp mode” when DEF levels are ...

EPA Administrator Lee Zeldin and U.S. Small Business Administration (SBA) Administrator Kelly Loeffler published an op-ed in the Des Moines Register today during their trip to Iowa detailing how the ...

[Stay on top of transportation news: Get TTNews in your inbox.] The Environmental Protection Agency is directing truck manufacturers to revise software in new and existing trucks to prevent engine ...

The Trump administration has issued new guidance on diesel exhaust fluid (DEF) systems aimed at avoiding sudden engine shutdowns that sideline trucks and cost truckers money. U.S. Environmental ...

The United States Environmental Protection Agency is on a roll when it comes to undoing past regulations and directives. Now, EPA Administrator Lee Zeldin is urging truck and engine manufacturers to ...

EPA is rolling out new guidance for manufacturers of farm equipment and other heavy-duty vehicles, removing regulatory red tape requiring diesel-powered farm equipment to reduce engine torque ...

The Environmental Protection Agency announced it is taking actions to ease the frustration and disruptions around sudden “derates” of diesel engines when they run ...

New EPA guidelines aim to prevent sudden engine shutdowns in diesel trucks due to DEF (Diesel Exhaust Fluid) depletion. Starting in 2027, new diesel trucks must be designed to avoid abrupt power loss ...