“Any law enforcement agency in New York that wants access to E-Z Pass data simply needs to issue a subpoena. There’s no probable cause required—just a bald assertion that the data might be useful in a criminal investigation. Moreover, at least seven states release E-Z Pass data in response to court orders in civil litigation. An obvious way to avoid E-Z Pass surveillance is to not install it, and simply pay tolls with cash. But even that might not be possible for much longer, thanks to a new technology that promises to end your ability to travel anonymously. You simply drive beneath a metal structure equipped with an E-Z Pass detection system and it snaps a photo of your license plate.”
http://www.nestmann.com/the-war-on-privacy-is-coming-to-a-license-plate-near-you