"Electronic toll collection system" is a system where a transponder, camera-based vehicle identification system, or other electronic medium is used to deduct payment of a toll from a subscriber's account or to establish an obligation to pay a toll.
"Electronic toll collection system user" means any natural person who subscribes to an electronic toll collection system or any natural person who uses a tolled transportation facility that employs the Authority's electronic toll collection system.
"Personally identifiable information" means any information that identifies or describes an electronic toll collection system user, including but not limited to travel pattern data, address, telephone number, e-mail address, license plate number, photograph, bank account information, or credit card number.
605 ILCS 10/19.1