According to the IDOT website:
"Under enhanced penalties passed by the Legislature and signed into law by Gov. Rod Blagojevich last year, first-time work zone speeders, including those caught on camera, will be hit with a fine of $375, with $125 of that sum going to pay off-duty State Troopers to provide added enforcement in construction or maintenance zones. Two-time offenders are subject to a $1,000 fine, including a $250 surcharge to hire Troopers, and the loss of their license for 90 days."
