PSIP Advisory 298- Smoke Testing Compliance Categories Topics Enforcement Programs Enforcement of Clean Truck Check HD I/M Regulation Type Information Advisory 298- Smoke Testing Compliance Advisory, provides information on the proper reading and interpretation of opacity test results using currently available smoke meters for Heavy Duty Diesel Vehicles.Updated 11/20/2019 Documents Smoke Testing Compliance Advisory 298 SMOKE_TESTING_COMPLIANCE_ADVISORY_ 298 FINAL.PDF · 169 KB Related Resources Program Information & FAQs Cargo Tank Certification Decal and Tank Number Display Requirements California State of Emergency (January 7, 2025): Sale, Offer for Sale, and Importation of U.S. EPA Certified Portable Generators into California
