EPA

EPA Questions Need for Diesel DEF De-Rates

EPA Gives Engine Makers 30 Days to Provide DEF System Data

EPA Rejects CARB Plan to Test Out-of-State Truck Emissions

International Lines Up EPA 2027 S13 Powertrain

EPA to Proceed With 2027 NOx Rules Timeline

EPA Proposal May Extend HFC Use in Cold Warehouses

Truckers back Trump’s emissions rollback at EPA

US Farmers, Biofuel Firms Could Win in EPA Proposals

EPA Moves to Block California’s Roadside Emissions Checks

EPA says it will prevent California’s ‘attack on truck drivers’