Electronic Toll Collection(ETC) system is a kind of modem
traffic toll collection means based on RFID technology[ 1]. By
using the microwave dedicated short range communication
(DSRC) operating at 5.8GHz between the tag or so-called on
board unit(OBU), which are installed on the front window of
vehicles and the reader or road side unit(RSU) on the ETC road
of toll collection station, the passing vehicles' toll could be
collected automatically without stopping. The time spent on
each vehicle is less than two second and the ability for
vehicles' passing of ETC passage is five to ten times of manual
toll collection passage. For these reasons, ETC system has been
developed and spread rapidly in recent years at home and abroad.