law: Railways Act, 1989
  6. Duties of Commissioner.
  The Commissioner shall- 
  (a) inspect any railway with a view to determine whether it is fit
  
  to be opened for the public carriage of passengers and report thereon to the
  
  Central Government as required by or under' this Act;
  (b) make such periodical or other inspections of any railway or
  
  of any rolling stock used thereon as the Central Government may direct;
  (c) make an inquiry under this Act into the cause of any
  
  accident on a railway; and
  (d) discharge such other duties as are conferred on him by or
  
  under this Act.