379.130.  Insurance claims, percentage of fault not to be assigned based solely on operation of a motorcycle. — 1.  When investigating an accident or settling an automobile insurance policy claim, no insurer, agent, producer, or claims adjuster of an insurer shall assign a percentage of fault to a party based upon the sole fact that the party was operating a motorcycle in an otherwise legal manner.

  2.  A violation of this section shall be an unfair trade practice as defined by sections 375.930 to 375.948 and shall be subject to all of the provisions and penalties provided by such sections.

  3.  As used in this section, the term "insurer" shall mean any insurance company, association or exchange authorized to issue policies of automobile insurance in the state of Missouri.  The term "automobile insurance policy" shall mean a policy providing automobile liability coverage, uninsured motorists coverage, automobile medical payments coverage or automobile physical damage coverage insuring a private passenger automobile owned by an individual or partnership.