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 AgricultureAirborne ToxicsAir Pollution(-)Air Quality PlansBiking & WalkingCars & TrucksCars, Trucks, & MotorcyclesClean CarsClimate ChangeCommunitiesConstruction & Earthmoving EquipmentConsumer ProductsDiesel VehiclesElectricityEnforcementEnvironmental JusticeEnvironmental JusticeFreight & Goods MovementHealthHeavy-Duty EquipmentHeavy-Duty VehiclesIncentivesIndoor Air Quality & ExposureIndustry & ManufacturingMeasuring Air QualityOceangoing Vessels & Harbor CraftOn-Road Heavy-Duty VehiclesResearchSimple Solutions to Improve Air QualitySustainable CommunitiesTrains & RailyardsTransitTruck & BusVW Diesel Vehicles(-)Climate Change Programs(-)Community Air Protection Program Outdoor Air Quality StandardsPeople at RiskResearch PlanningSustainable Communities & Climate Protection ProgramResearch 2 results found for ResearchResearch on Land Use and Transportation Planning ResearchResearch Program on Sustainable Communities FeaturedTruckStop Diesel Truck InformationDriveClean Buying guide for clean and efficient vehiclesBreathe Well Air quality in your neighborhood