Abstract: An induction vehicle detection and identification system comprising electronic identification devices with electronic memory, mounted on vehicles, and a reader capable of reading and/or writing data obtained from devices in HF-band. Devices have a non-volatile memory and are integrated into the vehicle's license plate. The reader combined with a magnetic frame is in a dielectric casing, which is mounted under the roadway. It generates an alternating magnetic field, which determines the detection and identification range. Minimum time the reader requires to read discrete responses generated by electronic identification devices and to identify the vehicle is less than 25 ms. The identification devices and the reader exchange data at the rate of 1 Kbit/sec or higher, and provide data encoding and decoding, as well as data access restriction.

Abstract: A method of traffic control at road intersections includes use of traffic lights, as well as detection and identification of vehicles approaching an intersection. To detect and identify a vehicle crossing the pre-set boundaries, we suggest mounting vehicle detection nodes probing the surrounding area using radio-frequency signals. In their turn, vehicles should be equipped with nodes, or tags, allowing their identification. When a vehicle equipped with an identification tag enters the monitored area, the tag generates a response containing the codeword with identification data of the vehicle, which is received and decoded by detection nodes. The duration of the green light signal is determined according to the time the vehicles, that have crossed the remote boundary during the last signal switching sequence, spent to cross the proximate pre-set boundary, and should not be shorter than that period.