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Emissions

Emissions
House passes bill to reauthorize Diesel Emissions Reduction Act
The U.S. House of Representatives overwhelmingly approved legislation to reauthorize the Diesel Emissions Reduction Act through 2029, securing $100 million annually to replace and retrofit aging commercial vehicle engines.
September 16, 2026
Brown semi-truck with exposed diesel engine and chrome exhaust pipes displayed against corrugated metal backdrop
Battery electric
California finalizes repeal of zero-emission truck rules
California has officially finalized the repeal of its zero-emission truck mandates for High Priority and Drayage fleets following a legal challenge by the California Trucking Association.
September 14, 2026
Worker refueling a commercial truck with teal livery at an industrial facility
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Michelin North America
September 1, 2026
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Emissions
House committee advances Diesel Emissions Reduction Act
The House Energy and Commerce Committee unanimously passed a bipartisan bill to reauthorize the Diesel Emissions Reduction Act (DERA) with $100 million in annual funding through 2029 to help modernize heavy-duty trucking and reduce emissions.
September 3, 2026
Close-up of a silver metal pipe with circular opening against blurred green foliage background
Emissions
Comment period for EPA 2027 emissions policy changes ends
Read what the heavy-duty industry told the EPA about proposed amendments to its emissions regulations.
September 1, 2026
Truck exhaust pipe emitting dark smoke against cloudy sky
Battery electric
California eyes bill targeting zero-emission truck prices
California legislators are considering SB 1213, a measure aimed at driving down commercial electric truck prices by requiring manufacturers to disclose pricing data to qualify for state incentive programs.
August 28, 2026
Blue NFIV zero emissions electric truck with charging cable and organizational logos including JETS, AQMD, and Long Beach Port Authority
Battery electric
Five Pacific governments partner on Canada-to-Mexico zero-emission freight network
Government leaders from California, Oregon, Washington, British Columbia, and Baja California have launched the BC2BC Corridor initiative to build a continuous zero-emission charging and hydrogen fueling network for commercial trucks along Interstate 5.
August 27, 2026
White Volvo truck with red Canadian maple leaf graphics parked at an ABB electric vehicle charging station
Battery electric
Is it almost Tesla time? Aftermarket challenge facing Tesla Semi and EV fleets
The success of heavy-duty models like the Tesla Semi will ultimately hinge on aftermarket support, uptime, and grid infrastructure rather than range alone.
August 11, 2026
White Tesla Cybertruck electric truck displayed outdoors with industrial building and blue sky background
Indicators
EPA rules, sold-out build slots slow surging Class 8 truck orders
Preliminary July North American Class 8 net orders surged up to 75% year over year as near-capacity 2026 build slots and pending EPA regulations constrained new order volume.
August 7, 2026
Industrial truck engine assembly in manufacturing facility with blue piping and radiator components
Emissions
Why DEF derating happens and what we learn from it
From space shuttle disasters to truck DEF derates, engineering failures build necessary safeguards in a complex, unpredictable world.
August 6, 2026
DEF highway service sign with trucks parked along a road under blue sky
Components
Mack, Volvo expand DEF software updates
Following updated EPA guidelines, Mack and Volvo are expanding DEF software patches across post-2010 models to give truck drivers up to 160 hours to address emissions issues before performance is restricted.
July 28, 2026
Mack Trucks technician using tablet computer in service bay with truck in background
Outlook and Benchmarking
A strategic inflection point for shippers: Why now is the time to rethink private fleets and lock in current transportation economics
New EPA emissions regulations will increase the cost and complexity of private truck fleets, making this a critical window for U.S. shippers to lock in predictable transportation economics.
July 15, 2026
Semi-truck parked at industrial warehouse facility at dusk with wet pavement and illuminated building windows
Emissions
Not all stakeholders onboard with EPA's DEF derate rules, warranty easement
EPA's proposed revisions to heavy-duty truck emissions rules have drawn widespread criticism from fuel marketers, small-business truckers, and environmental advocates.
July 10, 2026
Blue DEF fuel pump sign at gas station with diesel exhaust fluid icon and drop symbol
Emissions
EPA proposes to end DEF derates for good, scale back warranty requirements
If finalized, the EPA believes its proposal will save American truckers and farmers as much as $12 billion by eliminating burdensome Biden-era regulations
July 9, 2026
Blue DEF cap on diesel vehicle fuel tank opening
Components
No CARB required: SEMA certification gives fleets nationwide aftermarket options
In a federal rebalancing of emissions authority, EPA designates SEMA as national certifier.
July 9, 2026
Mechanic in red jacket working on engine of bright red commercial truck with open hood in industrial yard
Maintenance
Cummins, PACCAR issue software fix for DEF derates
Cummins and PACCAR’s new factory and dealer software updates change DEF inducement rules, timelines, and final vehicle speeds for truckers.
July 6, 2026
Two automotive engines side by side: gray diesel engine on left, red gasoline engine on right with finned valve cover
Components
EPA mandate: Fleets gain equal access to OEM diagnostic tools
New EPA guidance mandates that vehicle manufacturers share diagnostic tools and repair data for DEF and emissions systems with independent shops and drivers.
July 2, 2026
Close-up of a metal pipe with circular opening against blurred natural background
Battery electric
ATA's Spear: Strict EV mandates would 'implode' the economy
ATA chief blasts California's now-defunct EV truck mandates as "dumbest idea."
June 10, 2026
Two blue oval 'Certified Clean Idle' certification stickers on red vehicle door
Emissions
Trucking fleets exempt from proposed EV fee that would prop up Highway Trust Fund
An annual registration fee of $100 for battery electrics would help offset losses to the Highway Trust Fund caused by vehicles that bypass gas pumps.
May 18, 2026
Black electric vehicle charging cable and connector mounted on white wall with dark green vehicle visible in background showroom
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Top Stories
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CCJ Top 250
Schneider slashes 76% of carriers from its brokerage network
Schneider National drastically reduced its third-party brokerage carrier network from 60,000 to 14,000 partners.
White refrigerated semi-truck with Thermo King cooling unit parked on roadside with trees and red car visible
Maintenance
Managing older trucks amid rising costs and regulatory shifts
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Safety & Compliance
Was FMCSA's Motus site vibe coded?
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Economic trends
Supply constraints drive freight rate surge
Hand stacking wooden blocks labeled 'SAFE' and 'UNSAFE' against a blue background, representing decision-making and risk assessment.
Safety & Compliance
Why the C.H. Robinson fallout and broker liability shift matter to every motor carrier
CCJ Top 250
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