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 Airborne ToxicsAir PollutionAir Quality PlansBiking & WalkingBusiness AssistanceBusiness AssistanceCars & TrucksClean CarsClimate ChangeCommunitiesConstruction & Earthmoving EquipmentConsumer ProductsElectricityEnvironmental JusticeFreight & Goods MovementHealthIndoor Air Quality & ExposureMeasuring Air QualityOceangoing Vessels & Harbor Craft(-)On-Road Heavy-Duty VehiclesRecreational Vehicles & WatercraftResearchSimple Solutions to Improve Air QualitySustainable CommunitiesTrains & RailyardsTransitTruck & BusVW Diesel Vehicles(-)Air Cleaners & Ozone Generating ProductsCalifornia Climate InvestmentsCommunity SolutionsExposureIndoor Air QualityLow Carbon Transportation Investments and Air Quality Improvement ProgramLower-Emission School Bus ProgramOn-Road Heavy-Duty Certification ProgramPeople at RiskSchool BusesSustainable Communities & Climate Protection ProgramTruck and Bus Regulation Fact Sheet 1 results found for Fact SheetReduce Your Exposure to Particle Pollution FeaturedTruckStop Diesel Truck InformationDriveClean Buying guide for clean and efficient vehiclesBreathe Well Air quality in your neighborhood