70 ILCS 1905/4
The city council of any City, by resolution adopted by majority of its members, may determine that there is need and that it is in the best interest of the public that a Railroad Terminal Authority be organized in that city to exercise the powers and authority prescribed by this Act and it shall therein set forth the name of the Railroad Terminal Authority to be created hereunder, provided, however, that the words "Railroad Terminal Authority" shall form part of its name.
Within 30 days after the adoption of the resolution, it shall be the duty of the mayor of the city adopting the resolution to file in the office of the recorder in the county in which the city adopting the resolution is located a certified copy of such resolution.
Upon such filing in the office of the Recorder of Deeds the Railroad Terminal Authority shall be deemed to be organized as a municipal corporation and body politic.
70 ILCS 1905/4