Approval Details

Valid E.O.


This Executive Order approved the specified parts on on April 26, 1988.
As of Tuesday, March 21st, 2023 this Executive Order has not been overturned or superceeded.

Approved Parts

1988 and older vehicles

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-178
  • Executive Order 178 / D178
  • ARB # D-178
  • Executive Order No: D-178
  • C.A.R.B. No. D-178
  • Resolution D-178
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-178 PDF

D-178 Document:

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