610 ILCS 140/10

A Class I railroad company, as well as the National Railroad Passenger Corporation (doing business as Amtrak), may, no later than April 15 of each year, submit to the Commission an annual report containing the information described in subsections (b), (c), (d), and (e) of Section 5-117 of the Public Utilities Act and any other additional information by the railroad company, including, but not limited to, a national supplier diversity report. Any reports voluntarily submitted shall be in a form and manner required by the Commission. The Commission shall accept any reports submitted by a Class I railroad under this Section that contains as much State-specific data as possible.