Privacy Concerns
Civil liberties and privacy rights advocates have expressed concern about how the position data gathered through E‑ZPass is used. As of August 2007, several states that employ E‑ZPass have provided electronic toll information in response to court orders in civil cases, including divorces and other non-criminal matters.
Position data is collected by antennas at locations in addition to fee collection locations. The New York State Department of Transportation (NYSDOT), for example, collect transponder information to provide real-time estimates of travel times between common destinations. By subtracting the time when vehicles pass under the first sign from the current time, the sign can display the expected travel time between the sign and the destination point ahead. This information is also used to determine the best times to schedule lane maintenance-related lane closures and for other traffic management purposes. According to NYSDOT, the individual tag information is encrypted, is deleted as soon as the vehicle passes the last reader, and is never made available to the Department.
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