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How truck and engine OEs might approach EPA's new DEF-derate guidance
EPA's new guidance relaxing sudden 5-mph derates after aftertreament-system faults makes clear that existing derate procedures remain A-OK through at least the 2026 model year -- if manufacturers and their customers want them to be. Here's what a few truck and engine makers, and maintenance pros, are saying.
August 13, 2025
Regulations
Top truck makers sue CARB/California over enforcement of Clean Truck Partnership
Daimler Trucks, International, Paccar and Volvo said in the lawsuit they are "caught in the crossfire" between federal lawmakers and state regulators and are seeking clarification of their legal obligations, as well as an injunction blocking California from enforcing preempted emissions regs.
August 12, 2025
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June 16, 2025
Equipment
EPA announces end to 5-mph DEF derates for new and existing trucks
The EPA on Tuesday said new trucks won't derate due to running out of DEF or other system faults nearly as quickly or severely, and announced plans to modify software on all existing trucks to extend the timing for derates.
August 12, 2025
Equipment
Cummins delays new X15 diesel amid regulatory and demand uncertainty
With the proposed rollback of EPA's Greenhouse Gas emissions regulations, among other uncertainties, Cummins announced it will delay the debut of the diesel-powered engine in its X15 fuel-agnostic engine platform until late 2026.
August 8, 2025
Regulations
Pennsylvania mechanic charged for falsifying truck inspections, issuing fake stickers
The mechanic, who had been suspended as a certified inspection mechanic, continued to provide inspections in which he falsely certified the trucks were safe to operate and provided carriers with counterfeit inspection stickers. Also: DOT wants public feedback on next Strategic Plan; new truck show in New Jersey; Harbor Trucking Association names next CEO.
August 7, 2025
Custom Rigs
Wisconsin fleet owner's 1998 Freightliner cabover 'Never Finished'
After catching the show-truck fever at MATS almost a decade ago, small fleet owner Kevin Voigt bought this impressive Freightliner FLB and has been adding to it since the 2016 purchase. Even with all the work put in it over the nine years, "it's never been finished," he said.
August 7, 2025
Regulations
Truck aftertreatment systems are here to stay
What does the Trump administration's pending repeal of GHG regulations mean for SCR, your DPF and DEF?
August 6, 2025
Equipment
Honor CARB emissions deal: Environmentalists to truck makers | HOS fire waiver extended
A group of 17 businesses and organizations sent a letter to the manufacturers calling for them to remain committed to the Clean Truck Partnership with CARB following regulatory revocations by Congress. Also: FMCSA's Sue Lawless to join Scopelitis law firm; Oregon's wildfire HOS waiver extended; new T680 on the line for one of 12 military vets.
August 5, 2025
Overdrive Extra
LED lamps: In Canada, 25% of diodes dark can in fact net a violation
Standards specific to LEDs' individual diodes in the U.S. may not be available today, but CVSA inspection specialist John Sova makes it clear that "if 25% or more of the diodes are inoperative, the light would fail inspection" in the nation to our North.
August 5, 2025
Maintenance
LED failures: How many individual diodes going dark will net a violation?
The question is a tricky one to answer, and will vary by light position and design. Additionally, as any working owner-operator knows, no two truck inspectors are the same. Diodes do fail, though, and Overdrive sister publication TPS outlined the reasons here with experts.
August 1, 2025
Electronic Logging Devices
Walker, SR ELDs latest to land on FMCSA’s ‘revoked devices’ list
Motor carriers must stop using the revoked devices and replace them with a certified device by Sept. 29.
July 31, 2025
Custom Rigs
23-year-old Cameron Bagley's 1999 Pete 379 carries on father's legacy
Sometimes a family's legacy takes the form of a chromed-out, reefer-hauling 1999 Peterbilt 379 with a brother, sister, and mother owner-operator team.
July 31, 2025
Regulations
EPA set to unravel 'disastrous' federal trucking emissions regulations
The proposal would remove all greenhouse gas standards for heavy-duty vehicles and heavy-duty engines.
July 29, 2025
Overdrive Radio
OOIDA, ATA, Teamsters scrum in Senate hearing: 'Driver shortage,' ELP, CDL fraud, driverless trucks, more
In this Overdrive Radio, Track back through last week’s trucking-issues Senate hearing ahead of the 2026 highway bill. From cargo theft to fraud to driverless truck regs, hours of service and non-domiciled CDLs, a lot of ground was covered.
July 28, 2025
Voices
Driverless-truck tech: Owner-ops worry over cyberattacks, crashes, competition
Nearly a fourth of respondents to a recent survey felt driverless trucks were "one big accident away from being banned" from public roads. But current small-business truckers didn't have their heads in sand about the tech's progress. Most saw driverless competition less than a decade away.
July 25, 2025
Overdrive Extra
Weigh in: How far do you extend your oil drain interval?
A 100,000-mile change interval is possible -- our 2023 Trucker of the Year proved it. Yet conservative approaches to engine-oil drains have long been the rule of the day for most owners. What's your approach? Weigh in via this brief survey.
July 24, 2025
Custom Rigs
'Black Widow' '86 GMC General: 'Poor man's Peterbilt' for owner
Indiana-based Stuart Geltmaker bought the truck mostly for its two-stroke V8 Detroit engine and has since built it into a chromed-out showpiece.
July 24, 2025
Custom Rigs
Heavy machinery-hauling 2023 Peterbilt 589 shows strong at Gear Jammer
With a few custom touches, this Pete 589 really shines hauling big machines on low boys up and down the East Coast.
July 22, 2025
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Regulations
Top truck makers sue CARB/California over enforcement of Clean Truck Partnership
Daimler Trucks, International, Paccar and Volvo said in the lawsuit they are "caught in the crossfire" between federal lawmakers and state regulators and are seeking clarification of their legal obligations, as well as an injunction blocking California from enforcing preempted emissions regs.
Equipment
EPA announces end to 5-mph DEF derates for new and existing trucks
Overdrive Radio
What freight recession? Trucker of the Month insulates biz with direct customers
Equipment
Cummins delays new X15 diesel amid regulatory and demand uncertainty
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