American truckers are expected to save $12 billion thanks to the Environmental Protection Agency and Administrator Lee Zeldin rolling back Biden-era regulations and addressing what he called a “nationwide disaster.” The administration plans to address manufacturers’ concerns, consumer pricing, and truckers’ safety by addressing system failures. “Americans depend on reliable trucks to move essential goods across the country. If finalized, these changes will help manufacturers keep improving their vehicles without being forced to rush products to market before they’re ready,” Zeldin said. “The Trump EPA is committed to making trucking safe and reliable again while protecting human health and the environment,” he continued. On Thursday, Zeldin announced a proposal estimated to save American truckers $12 billion through “commonsense” revisions. This proposal, to be implemented by 2027, would equal roughly $6,000 per heavy-duty truck and trickle cost savings down to the consumer. The EPA is proposing to roll back 2023 emissions warranty requirements, the largest single cost to the trucking industry. While keeping the underlying emissions standard in place, the agency can preserve nearly 90% of nitrogen oxide reductions. “So, we protect the air and we protect your pocketbook,” Zeldin told a crowd at the Great American State Fair. New Yorkers are showing up for @epaleezeldin at the Great American State Fair this afternoon for an exciting @EPA announcement. The line for the New York booth has looked this long for at least an hour. Tomorrow is the LAST DAY the fair is open! @DailySignal pic.twitter.com/EpVqAV3GLl— Virginia Grace McKinnon (@virginiagmck) July 9, 2026 “Even if you’ve never driven a truck in your life, when it costs less to move goods, it costs less to buy them. Those savings get passed down to you at the grocery store, at the hardware store, on nearly everything a truck delivers,” Zeldin continued. The agency also plans to extend manufacturing lead time. Zeldin said manufacturers will have time to make sure new technology holds up instead of rushing products to market. At the Great American State Fair, I just announced a proposed roll back of the Biden admin's overburdensome truck emission rules. This proposal, which includes a permanent and total elimination of Diesel Exhaust Fluid (DEF) deratements, would save American truckers $12 billion.…— Lee Zeldin (@epaleezeldin) July 9, 2026 The ‘Nationwide Disaster’ of DEF The final point the proposal makes is something many Americans might not know about but that affects the entire supply chain. DEF, or Diesel Exhaust Fluid, is used to cut down on pollution in diesel engines. However, the systems that manage DEF are often unreliable. “When they fail, the engine does something called a derate. In plain English, the truck or tractor slows down or stops running altogether,” Zeldin explained. “The EPA, SBA, and USDA have made steady progress toward ending DEF deratements, removing unreliable sensor requirements, and offering operators more practical compliance options,” U.S. Small Business Administrator Kelly Loeffler said. “Today’s proposed rule is about locking in long-term reform and delivering a diesel framework that lowers costs, restores equipment reliability, and puts the hardest-working Americans first,” she continued. The EPA is opening a 45-day public comment period and will hold a public hearing to gather Americans’ comments on the proposal.