ECCD - MAC: 2022-01 MAC#2022-01 Categories Topics On-Road Heavy-Duty Vehicles Programs Heavy-Duty Greenhouse Gas Certification Program Type Information Contact Heavy-Duty Greenhouse Gas (HDGHG) Email hdghg@arb.ca.gov Phone (951) 542-3082 Documents MAC#2022-01 MAC202201.PDF · 280 KB Related Resources OBD Test Devices Overlap between the Clean Truck Check and the Periodic Smoke Inspection Program (PSIP) Credentialed Tester
