A copy of the sign that must be used is posted on the agency's website to be downloaded. It features a red circle and slash over the black silhouette of a handgun with the phrase "Pursuant to 430 ILCS 66/65" in the bottom right corner.
"If the sign does not meet statutory specifications, it would not be valid, and it could potentially be problematic to maintain criminal charges" against violators, State Police spokeswoman Monique Bond said. Matthew Walberg has the story in the Chicago Tribune.
Download sign here.