Electronic toll collection based on vehicle-positioning system techniques

After the DSRC-based ETC field trials project in Taiwan at SL and LT toll stations on freeway No.3 for 27 months, millions of electronic toll transactions helped Chunghwa Telecom Company (CHT) get plenty of achievements and experiences on ETC related technologies. At the same time, CHT invested in the development of ETC related products and technologies since 1998. The products we developed include not only DSRC-based ETC including IR and 2.45 Ghz microwave technologies, but also new ETC technology based on a vehicle positioning system (VPS). We have tested all those technologies for different traffic situations and climate conditions for evaluating the suitable toll collection technology. In this paper, we will share the VPS experience and its test results on expressway No.66 in Taiwan, and propose some research topics for reference.