CARB’s Clean Truck Check: What It Means for Dairy Farms

CARB’s Clean Truck Check: What It Means for Dairy Farms

November 10, 2025 · 11 min

About this episode

Paul Sousa discusses California's new Clean Truck Check rule and its implications for dairy farms.

This week on Seen & Herd , Western United Dairies’ Paul Sousa joins the show to unpack California’s new Clean Truck Check rule — a regulation catching many dairy producers by surprise. The program, managed by the California Air Resources Board (CARB), now requires most heavy-duty diesel trucks to complete regular emissions testing to stay registered with the DMV. Paul walks listeners through what the rule means for farm-owned trucks, how to register in the CARB database, and how to avoid common mistakes — like using unofficial websites or missing renewal deadlines. He also explains how the rules apply to trucks with special equipment plates and shares insights on how WUD is helping members navigate these changes. For more information, visit cleantruckcheck.arb.ca.gov or contact Paul Sousa at (209) 556-2490 or paul@wudairies.com .

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