These devices are active RFID transponders and primarily designed to record a vehicle’s travel time between locations. In some cities, the devices are also used to collect position data for traffic management purposes, as well as to pay for parking. The amount of information collected, and the duration the information is retained by the toll collection systems is not disclosed publicly.
- Examples: E-ZPass, Quick Pass, I-Pass, I-Zoom, TransPass, MTag
- Technologies: RFID
- More information: See https://en.wikipedia.org/wiki/Electronic_toll_collection and https://www.aclu.org/blog/free-future/newly-obtained-records-reveal-extensive-monitoring-e-zpass-tags-throughout-new-york, and http://www.gao.gov/products/GAO-14-81 for more information
