IL SB0681

Allows evidence of prior driving under the influence (DUI) or aggravated DUI offenses to be admissible in criminal cases if the defendant refused chemical testing when requested by law enforcement.

Courts must weigh probative value against unfair prejudice by considering: time proximity to the charged offense, degree of factual similarity, whether prior offenses resulted in guilty findings, and other relevant circumstances.

Requires prosecution to disclose prior offense evidence (including witness statements or testimony summaries) at a reasonable time before trial, unless the court excuses pretrial notice for good cause.

Permits proof through specific conduct, reputation testimony (only after defense introduces it first), or expert opinion evidence of prior DUI offenses.