HD I/M Background and Requirements

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Clean Truck Check (HD I/M) & Periodic Smoke Inspection Programs
Heavy-Duty Inspection and Maintenance (HD I/M) Regulation: Background and Program Requirements Starting in 2023

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HD I/M Program Background and Regulation Basics
FACTSHEET_BACKGROUND_AND_PROGRAM_REQUIREMENTS_STARTING_IN_2023_1.PDF · 183 KB