(a) A compressed natural gas (CNG) licensee may not limit or avoid its liability or that of its insurer for damages proximately caused by any negligent act or acts of the licensee in handling CNG.
(b) An attempt to limit or avoid liability before the negligent act or acts, through indemnity clauses or otherwise, shall be null and void.
(c) This section does not apply to negotiations and/or settlements made subsequent to the recognition by the parties to a contract of the licensee's negligent act or acts.
(d) To the extent that any damage occurring during or subsequent to any of the following acts does not proximately result from any negligent act of the licensee, the licensee may limit liability based on the following:
  (1) unauthorized, unsafe, or improper applications of CNG and/or CNG systems or equipment by any user or other person;
  (2) any use or operation of CNG and/or CNG systems or equipment contrary to the specific representations made by any user or other person to a CNG licensee during or preceding installations or servicing of such CNG systems or equipment and relied upon by such CNG licensee in selecting, designing, installing, or servicing such systems or equipment; or
  (3) any modification, change, installation, alteration, tampering, or other action by any unlicensed person, to or upon any CNG system or equipment.

Source Note: The provisions of this §13.66 adopted to be effective November 15, 1990, 15 TexReg 5941.