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Regulation & law · 10/11/2011

California Air Resources Board Requests EPA Confirmation on Heavy-Duty Engine On-Board Diagnostic Regulation Amendments

The California Air Resources Board (CARB) has requested EPA confirmation on amendments to its heavy-duty engine on-board diagnostic (HD OBD) regulation, which relax and clarify existing rules, and is tentatively scheduling a public hearing on the matter.

Original source language: Federal Register — All DocumentsOpen original release →

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