(65 ILCS 5/11-1-11) (from Ch. 24, par. 11-1-11)
    Sec. 11-1-11. Agreement with another entity to enforce traffic ordinances. The corporate authorities of a municipality with a population greater than 1,000,000 may enter into an agreement with the Chicago Transit Authority, created under the Metropolitan Transit Authority Act, whereby Chicago Transit Authority supervisory employees are empowered to enforce certain traffic ordinances enacted by the municipality.
(Source: P.A. 87-597.)