- California DMVwww.dmv.ca.gov
- Secretary of the State Californiawww.sos.ca.gov
- California department of tax and fee administration www.cdtfa.ca.gov
- Bureau of automotive repair www.bar.ca.gov
- Clean Truck Checkwww.cleantruckcheck.arb.ca.gov
- California Air Resources Board ww2.arb.ca.gov