Truck and Bus Regulation
- 2014 Amendment details
- Truck and Bus Final Regulation
- DIESEL Hotline's Most Frequently Asked Questions
- Compliance requirements fact sheet
- Low Use Vehicle Exemption
- Low-Mileage Work Truck Option
- NOx Exempt Area Extension
- Small Fleets Option
- 3-Day Pass Form
- Flexibility options, factsheets and FAQs webpage
- Truck and Bus Reporting System
- Where is the GVWR label (gross vehicle weight rating)?
- Where is the ECL label (engine label/emission control label)?
- Fleet calculator (compliance tool)
Reporting certificates and fleet status
- How to report online
- How to print a reporting certificate
- How to verify if hired fleets comply
- Reporting status check -- Verify if a company is listed in the database
DPF/soot filters (diesel particulate filter, VDECS, PM filter, exhaust retrofit)
- Filter installation, maintenance and purchase information website
- What if the DECS fails outside of the warranty period?
- DECS component swapping and re-designation requirements
- List of currently verified equipment
- Guide to Care and Maintenance of Diesel Particulate Filters
- Cleaire Advanced Emission Controls Purchased by ESW Technologies Incorporated
Financial Assistance and Free Training
- Funding Resources Index
- Heavy-Duty Diesel Vehicle Loan Program fact sheet (PLACE)
- Free Training and Speaker Request
(Para ver esta página en español.)
- Applies to
- Does not apply to
- Small fleets
- DPF/soot filter requirements begin January 1, 2012.
- Engine replacement requirements begin January 1, 2015.
- Requirements vary by Gross Vehicle Weight Rating (GVWR) and by the vehicle's engine model year.
- Diesel vehicles with a gross vehicle weight rating greater than 14,000 pounds.
- Privately and federally owned trucks and buses that operate in California.
- Privately and publicly owned school buses that operate in California.
- Includes any person, business, school district, tribal reservation, or federal government agency that owns, operates, leases or rents affected vehicles.
- Gasoline or dedicated natural gas vehicles
- Solid Waste Collection Vehicles
- Public Agency and Utility Vehicles (Not Federal)
- Drayage (Port or Rail) Trucks
- Transit/Urban Buses
- Personal use motor homes or recreational vehicles.
The small fleet option is closed. You must have met the requirements and should have already been reported to use this option. Your first truck should have a PM filter installed. The second truck has until January 1, 2017 to install a PM filter. The third truck has until January 1, 2018 to install a PM filter.
For the Basic Compliance Schedule for lighter and heavier trucks see #2 on the Multi-Regulation Summary.
The following are upcoming deadlines:
September 1, 2015
- To avoid penalties for a manufacturer delay, order soot filters by this date to meet January 1, 2015 requirements.
- Deadline to apply for a soot filter extension if no filter is available from any manufacturer.
January 1, 2015
- Owners using any of the following extensions below are required to meet a percent of total fleet compliance:
- School buses must meet 100%
- Phase-in option must meet 90%
- Log truck provision must meet 20%
- NOx exempt must meet 25%
- Low-mileage construction truck must meet 40%
January 31, 2015
Reporting deadline for:
- Claim 2015 extensions if you previously reported for a flexible option other than the phase-in option.
- Annual mileage and hour readings required for fleets using the following delays:
- Low use vehicle exemption
- Low-mileage construction trucks
- Agricultural vehicle provision
- Reporting is required for any changes to the fleet. Updates should be made within 30 days.
- Final vehicle designations for Log Truck provisions and Agricultural Truck provisions.
See the DPF handbook:
A Truck Driver’s Guide to Care and Maintenance of Diesel Particulate Filters.
Question of the Month
This Month's Most Frequent Question! -- I am a small fleet. Is there any extra extension I can use in addition to the Small Fleet Option? -- See the same link for last month's question about how to print a Truck and Bus reporting certificate.
If you need further assistance, please see our quick tips on the Diesel Questions - Need Help? page before contacting us.