Approval Details

Unknown Validity


As of Wednesday, July 8th, 2020 this Executive Order has not been overturned or superceeded. Warning: This Executive Order record has not yet been synced with system.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-428-4
  • Executive Order 428-4 / D428-4
  • ARB # D-428-4
  • Executive Order No: D-428-4
  • C.A.R.B. No. D-428-4
  • Resolution D-428-4
For Free CARB Executive Order Status verification, email an image of the device Executive Order label as well as the Year/Make/Model and Test Group # of the vehicle to [email protected]

Download: Executive Order D-428-4 PDF

D-428-4 Document:

Current View

Previous E.O. D-428-3 | Previous E.O. D-427 | Next E.O. D-428-5 | Next E.O. D-429