EPA Vehicle-Emissions Rollback: What’s Final and What’s Next
EPA’s greenhouse-gas vehicle rollback is final, but a separate heavy-truck proposal remains unresolved amid court challenges and a California emissions fight.
Vehicle Emissions
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Washington proposes Clean Vehicles rule changes as Aug. 13 comment deadline nears
Ecology is proposing updated emissions standards, fallback rules and fleet-reporting authority. Virtual public hearings are Aug. 4 and 5, and written comments are due Aug. 13.
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EPA proposes shifting Tier 4 vehicle pollution to MY 2029; comments due July 6
EPA’s proposed “Part 1” would stretch Tier 3 for certain new vehicles through 2027–2028 and start Tier 4 criteria pollution controls in MY 2029. Comments due July 6.