625 ILCS 5/13-117: Home rule.

A unit of local government within the affected areas, including home rule units, shall not require or conduct a diesel emission inspection program that does not meet or exceed the standards of the diesel emission inspections provided for in this Chapter 13. A unit of local government within the affected areas, including home rule units, must affirmatively comply with the diesel emission inspection requirements of this Chapter 13. This Section is a limitation under subsection (i) of Section 6 of Article VII of the Illinois Constitution on the concurrent exercise by home rule units of powers and functions exercised by the State.