The California Air Resources Board offers the most comprehensive emissions inventory (EMission FACtor – EMFAC) which can be searched and sorted by location and emissions source. This tool also provides access to on road vehicle population estimates for California at the Census Block Group level. The estimates are generated based on vehicle registration data from California Department of Motor Vehicles.
Local groups across the state are organized to work towards cleaner and healthier neighborhoods. Many fleets have already taken the first step and their drivers are enjoying safer, cleaner workplaces with reduced health hazards.
Browse and share our video library that shows what’s working now.
Local air districts regulate all businesses and factories creating air pollution, but it is the California Air Resource Board at the state level which monitors and issues citations for trucks. If fleets in your neighborhood are idling illegally, or operating trucks which appear old or without working pollution control filters (smoking vehicles) please report them.
CARB’s Vehicle Complaint Hotline:
1-800-END-SMOG (1-800-363-7664)
Please have the following information ready to report:
- Vehicle type
- License plate number
- Date, time, and location of the incident
- Make and model of the vehicle
Outside of normal business hours simply complete this online form: Complaint Form for Idling Commercial Vehicle