Electronic toll collection system for toll road

Details Electronic toll collection system for toll road Electronic toll collection system for toll road

2007-02-20

2007-02-20

Hafiz, Tariq R. (Department: 3623)

Data processing: financial, business practice, management, or co

Automated electrical financial or business practice or...

Transportation facility access

C340S928000, C701S001000

Reexamination Certificate

active

09394514

ABSTRACT:
An ETC (electronic toll collection) system includes an antenna having a predetermined directivity for providing a limited radio-communication service zone. A vehicle sensor operates for detecting a vehicle which reaches a predetermined position in the limited radio-communication service zone. A radio signal is transmitted via the antenna. A decision is made as to whether or not a radio response to the radio signal is received via the antenna. In cases where a radio response to the radio signal is received, it is judged that there is an ETC vehicle incoming. In cases where the vehicle sensor detects a vehicle while a radio response to the radio signal is not received, it is judged that there is a non-ETC vehicle incoming.

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