Section 118. Investigations by commissioner

1. The commissioner may, of his
  own motion, investigate or make inquiry, in a manner to be determined by
  him  as  to  any  act  or thing done or omitted to be done by any common
  carrier, subject to his supervision, and the commissioner must make such
  inquiry in regard to any act or thing done or omitted to be done by  any
  such common carrier in violation of law or an order of the commissioner.
    2.  Complaints  may  be  made  to  the  commissioner  by any person or
  corporation aggrieved, by petition or complaint in writing setting forth
  any thing or act done or omitted to be done by  any  common  carrier  in
  violation, or claimed to be in violation, or of the terms and conditions
  of  its  franchise  or charter or of any order of the commissioner. Upon
  the presentation of such a complaint the commissioner shall cause a copy
  thereof to be forwarded to the person or carrier  complained  of,  which
  may  be  accompanied  by  an  order, directed to such person or carrier,
  requiring that the matters complained  of  be  satisfied,  or  that  the
  charges  be  answered  in  writing  within a time to be specified by the
  commissioner.  If  the  person  or  carrier  complained  of  shall  make
  reparation  for  any  injury  alleged  and  shall cease to commit, or to
  permit, the  violation  of  law,  franchise  or  order  charged  in  the
  complaint,  and  shall  notify  the commissioner of that fact before the
  time allowed for answer, the commissioner need take  no  further  action
  upon the charges. If, however, the charges contained in such petition be
  not  thus  satisfied, and it shall appear to the commissioner that there
  are reasonable grounds therefor, he shall investigate  such  charges  in
  such  manner  and  by  such means as he shall deem proper, and take such
  action within his powers as the facts justify.
    3. Whenever the commissioner shall investigate any  matter  complained
  of  by  any  person or corporation aggrieved by any act or omission of a
  common carrier under this section it shall be his duty to make and  file
  an  order  either  dismissing the petition or complaint or directing the
  common carrier complained of to satisfy the cause of complaint in  whole
  or to the extent which the commissioner may specify and require.