Toll collection system

Details Toll collection system Toll collection system

1996-04-01

1998-01-06

Hofsass, Jeffery

Communications: electrical

Traffic control indicator

Combined

340933, 340937, G08G 100

Patent

active

057059969

ABSTRACT:
The present invention provides an automobile toll system which may determine accurately whether a device mounted on a vehicle has a mismatch even when a small automobile is running just behind a large automobile and therefore blocked from communicating with the toll system. In the system, a vehicle type discriminator determines the type of a vehicle passing therethrough based on its shape and weight and transmits determination data to a lane controller. A controller for a reading antenna continuously transmits vehicle type data retrieved from a response signal from the vehicle-mounted device when vehicles stay in the antenna communication area. The lane controller compares type discrimination data and vehicle type data for each vehicle in the order of vehicles leaving the communication area to recognize a mismatch if the data are different.

REFERENCES:
patent: 4338587 (1982-07-01), Chiappetti
patent: 5086389 (1992-02-01), Hassett et al.
patent: 5101200 (1992-03-01), Swett
patent: 5253162 (1993-10-01), Hassett et al.
patent: 5289183 (1994-02-01), Hassett et al.
patent: 5451758 (1995-09-01), Jesdadanont
patent: 5485520 (1996-01-01), Chaum et al.

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