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 AgricultureAir PollutionCars & TrucksClean CarsClimateClimate ChangeCommunitiesElectricityEnforcementFreight & Goods MovementFuelsIncentivesIndustry & ManufacturingOn-Road Heavy-Duty VehiclesResearch(-)Truck & BusAlternative Diesel Fuels(-)Carl Moyer Memorial Air Quality Standards Attainment ProgramClimate Change ProgramsCommunity Air Protection Program Community HealthDiesel VehiclesExposureGreenhouse Gas Standards for Medium- and Heavy-Duty Engines and VehiclesIn-Use Compliance ProgramsIn-Use Off-Road Diesel-Fueled Fleets RegulationPort Activities Research PlanningSchool BusesStudy of Neighborhood Air near Petroleum SourcesTransport Refrigeration UnitTruck and Bus Regulation Truck and Bus Surveillance ProgramTruck Loan Assistance ProgramVehicle Emissions Research ProgramZero-Emission Powertrain CertificationResearch 1 results found for ResearchMeasuring Real-World Heavy-Duty Truck Emissions FeaturedTruckStop Diesel Truck InformationDriveClean Buying guide for clean and efficient vehiclesBreathe Well Air quality in your neighborhood