Tag: DEF rule 2026

End of the 5-MPH Crawl: Heavy-Duty Truck and Engine OEMs Unify Around Relaxed DEF Derate Rules

(CVBN: Chico, CA) -- North America’s leading Class 8 truck OEMs and heavy-duty engine manufacturers have aligned behind a sweeping, industry-wide software overhaul that...

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CALSTART Rebrands as Catalyst Mobility Ahead of 2027 Merger with Forth

Clean transportation organization CALSTART has rebranded as Catalyst Mobility as part of a strategic initiative that includes a planned combination with Forth in 2027 to support zero-emission commercial fleet adoption.