Drivers operating amplified stereo systems that can be heard for more than 75 feet outside the vehicle are once again subject to punishment by state law.

On June 29, 2001, the Illinois Department of Veterans' Affairs adopted amendments to section 108 of the Illinois Administrative Code.

On January 19, 2001, the Illinois Supreme Court reversed the appellate court's finding that the defendant, Anthony Crane, had his constitutional right to a speedy trial violated.

On April 13, 2001, the Appellate Court of Illinois, Fourth District, applied the void-for-vagueness doctrine to a constitutional analysis of section 1(D)(h) of the Adoption Act, 750 ILCS 50/1 (D)(h).

On July 3, 2001, the seventh circuit court of appeals affirmed in part and vacated in part the lower court's grant of summary judgment to the defendant, Caterpillar, Inc.

On July 6, 2001, the Appellate Court of Illinois, Third District, reversed the lower court's order awarding grandparent visitation to Brent and Rita Langman, the paternal grandparents of children whose father had died while married to their mother, Amy Langman.