Resources Resources such as documents, research, data, and other tools related to the activities of the California Air Resources Board are available from this page. Use the following general categories or the search tool below. Resource DirectoriesExecutive OrdersPermits, Certifications, Verifications, and RegistrationsFormsDatabase ApplicationsResearchA-Z indexVapor Recovery Keywords Cars & TrucksClean CarsAdvanced Clean Cars ProgramAir Quality Improvement Program GuidelinesAlternative Diesel FuelsCarbon Capture and SequestrationCargo Tank Vapor RecoveryHeavy-Duty Diesel Inspection & Periodic Smoke Inspection ProgramsLow Carbon Transportation Investments and Air Quality Improvement Program(-)OBD - On-Board Diagnostic ProgramOil and Natural Gas Production, Processing, and Storage Protect California Air Act of 2003 - Senate Bill 288SemiconductorVapor RecoveryVolkswagen Environmental Mitigation Trust for CaliforniaVolkswagen Zero-Emission Vehicle (ZEV) Investment CommitmentVW Diesel Vehicle Owner InformationFact SheetInformation(-)Legal DocumentResearch 2 results found for Legal DocumentHeavy-Duty OBD Regulations and Rulemaking Legal DocumentOBD II Regulations and Rulemaking FeaturedTruckStop Diesel Truck InformationDriveClean Buying guide for clean and efficient vehiclesBreathe Well Air quality in your neighborhood