(65 ILCS 20/21-48) (from Ch. 24, par. 21-48)
    Sec. 21-48. Power to city of Chicago exclusive.
    No order, decision, rule or regulation heretofore or hereafter made by the State Public Utilities Commission or by the Illinois Commerce Commission, or any department or agency of the State succeeding to any of the powers of the Illinois Commerce Commission, shall interfere with the full exercise of the powers and authority conferred upon the city of Chicago by this article.
(Source: Laws 1941, vol. 2, p. 19.)