GB2227866A - Vehicle identification - Google Patents
Vehicle identification Download PDFInfo
- Publication number
- GB2227866A GB2227866A GB8928101A GB8928101A GB2227866A GB 2227866 A GB2227866 A GB 2227866A GB 8928101 A GB8928101 A GB 8928101A GB 8928101 A GB8928101 A GB 8928101A GB 2227866 A GB2227866 A GB 2227866A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plate
- identification
- vehicle
- data
- motor vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
- G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
- G07B15/063—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems using wireless information transmission between the vehicle and a fixed station
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
- G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Business, Economics & Management (AREA)
- Finance (AREA)
- Devices For Checking Fares Or Tickets At Control Points (AREA)
Abstract
An automatic vehicle identification system includes an identification plate (24) for performing radio (or optical) transmission of a characteristic identification number and a vehicle number, which is mounted on a motor vehicle (25), an identification plate reader (11) for receiving signals outputted from the identification plate (24) so as to read the identification number and the vehicle number, a number plate reader (15) for optically reading a number plate (26) of the motor vehicle (25), and a comparator/collator for comparing the signals from the two readers (11, 15), equality causing fee calculation and inequality causing closing of a gate against the vehicle or photographing of it. <IMAGE>
Description
The present invention relates to an automatic vehicle identification system for deciding whether or not motor vehicles can enter into specific areas such as toll roads, charged parking lots, etc.
Conventionally, in automatic vehicle identification systems, it has been so arranged that when a motor vehicle mounted with an identification (ID) plate having a characteristic ID number passes by a facility installed on a toll road, for example, an ID plate reader provided at a passage check point of a gate such as a toll collecting spot, automatic communication or automatic response is performed between the ID plate and the facility by a radio communication means as described in a magazine "Koutsuu
Kougaku (Traffic Engineering)", Vol. 21, No. 2, pages 26-29 published in March, 1986 by Koutsuu Kougaku Kenkyukai of
Japan.Thus, the characteristic ID number stored in or described on the ID plate mounted on the motor vehicle is identified by the facility and a necessary identification processing on the toll road, for example, a decision on a car model of the motor vehicle, automatic toll collection or a decision on permission of entry of the motor vehicle into a special zone is performed.
However, in the known automatic vehicle identification systems, it was possible to discriminate the characteristic ID number of the ID plate but it was impossible to automatically decide whether or not the ID plate is mounted on a valid motor vehicle under contract. Namely, the known automatic vehicle identification systems have such a drawback that even if an ID plate allotted to a small-sized car in a contract for automatic toll collection of the toll road is illegally mounted on a large-sized car so as to reduce its toll, it is impossible to detect the illegal mounting of the ID plate on the large-sized car.
Accordingly, an essential object of the present invention is to provide not only a highly reliable automatic vehicle identification system capable of automatically deciding whether or not an ID plate is mounted on a valid motor vehicle under contract but the ID plate employed in the system
In order to accomplish this object of the present invention, an automatic vehicle identification system embodying the present invention comprises: an identification plate for performing radio transmission of a characteristic identification number and a vehicle number, which is mounted on a motor vehicle; an identification plate reader for receiving signals outputted from said identification plate so as to read the identification number and the vehicle number; a number plate reader for optically reading a number plate of said motor vehicle; and a comparator/collator for comparing a signal of said identification plate reader with a signal of said number plate reader; wherein when said comparator/collator has decided that the signal of said identification plate reader does not coincide with the signal of said number plate reader, traffic of said motor vehicle is regulated.
This object and features of the present invention will become apparent from the following description taken in conjunction with the preferred embodiment thereof with reference to the accompanying drawings, in which:
Fig. 1 is a block diagram of an ID plate employed in an automatic vehicle identification system according to one embodiment of the present invention;
Fig. 2 is a block diagram of the automatic vehicle identification system of Fig. 1; and
Fig. 3 is a perspective view of facilities installed on a road, which are employed in the automatic vehicle identification system of Fig. 2.
Before the description of the present invention proceeds, it is to be noted that like parts are designated by like reference numerals throughout the accompanying drawings.
Referring now to the drawings, there is shown in
Fig. 2, an automatic vehicle identification system K according to one embodiment of the present invention. In Fig. 2, the system K includes an identification (ID) plate reader 11 and a number plate reader 15. The ID plate reader 11 is constituted by a road antenna 12 installed on a toll road, a communication processor 13 and an ID number discriminator 14, which are connected to each other as shown. Meanwhile, the number plate reader 15 is constituted by a camera 16, an image processor 17 and a number plate discriminator 18, which are connected to each other as shown. The ID plate reader 11 and the number plate reader 15 are connected to a comparator/collator 19. The comparator/collator 19 is, in turn, connected to first and second communication controllers 20 and 21.Furthermore, the first communication controller 20 is connected to a fee calculator 22, while the second communication controller 21 is connected to an illegal traffic processor 23.
Operation of the system K of the above described arrangement is described, hereinbelow. An ID plate 24 shown in Fig. 1 is employed in the system K and is mounted on a motor vehicle 25 running on the toll road as shown in Fig.
3. In the ID plate reader 11, the road antenna 12 receives, by radio, data on the ID number from the ID plate 24 and the data on the ID number is transmitted via the communication processor 13 to the ID number discriminator 14. Data on a number plate 26 (Fig. 1) of the motor vehicle 25 such as a car model code, a 4-digit serial number, etc. is contained in at least a portion of the data on the ID number. The ID number discriminator 14 discriminates the data on the ID number and the data on the number plate 26 so as to transmit the data on the number plate 26 to the comparator/collator 19.
In the number plate reader 15, the number plate 26 of the running motor vehicle 25 is shot by the camera 16 and the car model code, the 4-digit serial number, etc. in the data on the number plate 26 are discriminated through the image processor 17 by the number plate discriminator 18 so as to be transmitted to the comparator/collator 19. In the comparator/collator 19, the data on the number plate 26 transmitted from the ID number discriminator 14 is compared with and collated with that transmitted from the number plate discriminator 18 such that a decision is made as to whether or not the two data on the number plate 26 coincide with each other.If the comparator/collator 19 has made a positive decision that the two data on the number plate 26 coincide with each other, data for permitting passage of the motor vehicle 25 is transmitted by way of the first communication controller 20 to the fee calculator 22 in which a necessary fee corresponding to the car model code is calculated. On the other hand, if the comparator/collator 19 has made a negative decision that the two data on the number plate 26 do not coincide with each other, the negative decision is transmitted through the second communication controller 21 to the illegal traffic processor 23 by which a necessary step such as closing of a gate of the toll road or taking a picture of the illegal motor vehicle 25 is taken.
Therefore, in the system K of the present invention, it becomes possible to discriminate, on a real time basis, data on a valid number plate to be combined with the
ID plate 24, which is obtained from the ID plate reader 11 and data on an actual number plate combined with the ID plate 24, which is obtained from the number plate reader 15.
Thus, since the two data on the number plate 26 are collated with each other by the comparator/collator 19, such excellent effects are achieved that illegal use of the ID plate 24 can be prevented and failure of the ID plate 24 can be judged on a real time basis.
The data on the number plate 26 can be added to the ID number of, for example, a 10-digit serial sequence as a portion of the ID number. Alternatively, it can also be so arranged that the data on the number plate 26, per se, formed by a transportation office code, a car model code, an application code, a 4-digit serial number, etc. is used as the ID number.
Fig. 3 shows the ID plate reader 11 and the number plate reader 15 referred to above. In Fig. 3, the ID plate 24 mounted on the motor vehicle 25 performs information interchange with the road antenna 12 of the ID plate reader 11 by radio, etc. and the number plate 26 mounted on the motor vehicle 25 is shot by the camera 16 of the number plate reader 15.
Fig. 1 shows one example of an arrangement of the
ID plate 24 employed in the system K. In response to a call from the road antenna 12, the ID plate 24 fetches the characteristic ID number of a serial sequence from an ID number storage 27 and fetches the data on the number plate 26 from a number plate data storage 28. An ID data synthesizer 29 synthesizes the above characteristic ID number and the above data on the number plate 26 into the data on the serial ID number such that a response signal is transmitted from a plate antenna 32 to the road antenna 12 through a modulation signal generator 30 and a modulator 31.
In this embodiment, at least a portion of the data on the ID number written on the ID plate 24 contains the data on the number plate 26 of the motor vehicle 25 to be provided with the ID plate 24, for example a motor vehicle under contract for automatic collection of toll of the toll road, a motor vehicle permitted to enter into a security zone, etc., thereby resulting in remarkably great security of the system K.
It is needless to say that if, especially, the number plate data storage 28 is formed into a ROM or a constant setting portion such as a setting pin, a setting switch, etc., reliability of data stored in the number plate data storage 28 is superior to that of a case in which the number plate data storage 28 is formed by a RAM.
Furthermore, if the number plate data storage 28 is formed by an independent ROM or constant setting portion, it becomes possible to flexibly set the data on the number plate 26 in accordance with its applications. Therefore, if the data on the number plate 26 is so set as to overlap the data on the ID number of a serial sequence, which is stored in the ID number storage 27 at the time of manufacture of the ID plate 24 at a plant, etc., thereby resulting in improvement of security of the system K as well as flexible setting of the data on the number plate 26.
Furthermore, from a standpoint of achievement of security of the data on the number plate 26, it is preferable that the number plate data storage 28 is formed such that once data has been stored in the number plate data storage 28, rewriting of the data in the number plate data storage 28 cannot be performed. Thus, it is desirable for the number plate data storage 28 that the ROM cannot be removed from its mounting portion after writing of data therein or the constant setting portion is fixedly secured to its mounting portion after setting of a constant.
As is clear from the foregoing description, in the system of the present invention, the characteristic ID number of the ID plate and the variable vehicle number of the number plate are stored so as to be transmitted by radio in response to a call from the road antenna. Therefore, by receiving the ID number and the vehicle number by the road antenna, illegal entry of the motor vehicle into the specific areas can be prevented through check of the ID number and comparison between the vehicle number obtained from the ID plate and the actual vehicle number.
Furthermore, in the present invention, at least a portion of the data on the ID number written on the ID plate contains the data on the number plate of the motor vehicle to be provided with the ID plate, for example, a motor vehicle under contract for automatic collection of toll of the toll road, a motor vehicle permitted to enter into a security zone, etc. and the automatic vehicle identification system includes the comparator/collator for comparing and collating with each other, the data on the number plate obtained from the ID plate reader and the data on the number plate obtained from the number plate reader. Thus, in accordance with the present invention, it becomes possible to judge on a real time basis whether or not the ID plate is mounted on a valid motor vehicle, so that illegal use of the
ID plate can be prevented, thereby resulting in great security of the system.
Meanwhile, information interchange between the ID plate and the ID plate reader may be performed through radio communication or optical communication and the ID plate may employ bar code so as to be optically read.
Although the present invention has been fully described by way of example with reference to the accompanying drawings, it is to be noted here that various changes and modifications will be apparent to those skilled in the art. Therefore, unless otherwise such changes and modifications depart from the scope of the present invention, they should be construed as being included therein.
Claims (2)
1. An automatic vehicle identification system (K) comprising:
an identification plate (24) for performing radio transmission of a characteristic identification number and a vehicle number, which is mounted on a motor vehicle (25);
an identification plate reader (11) for receiving signals outputted from said identification plate (24) so as to read the identification number and the vehicle number;
a number plate reader (15) for optically reading a number plate (26) of said motor vehicle (25); and
a comparator/collator (19) for comparing a signal of said identification plate reader (11) with a signal of said number plate reader (15),
2. An identification plate (24) comprising:
an identification number storage (27) for storing a characteristic identification number of said identification plate (24);
a number plate data storage (28) for variably storing a vehicle number of a motor vehicle (25) mounted with said identification plate (24);
an identification data synthesizer (29) for synthesizing a signal of said number plate data storage (28) and a signal of said identification number storage (27) into a synthetic signal having a predetermined form; and
a modulation signal generator (30) which transmits by radio the synthetic signal of said identification data synthesizer (29) from a plate antenna (32) in response to a call from an antenna (12) installed on a road.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31408488A JPH02159699A (en) | 1988-12-13 | 1988-12-13 | Automatic vehicle identifying device |
JP31408588A JPH02159700A (en) | 1988-12-13 | 1988-12-13 | Id plate |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8928101D0 GB8928101D0 (en) | 1990-02-14 |
GB2227866A true GB2227866A (en) | 1990-08-08 |
GB2227866B GB2227866B (en) | 1993-05-05 |
Family
ID=26567814
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8928101A Expired - Fee Related GB2227866B (en) | 1988-12-13 | 1989-12-12 | Automatic vehicle identification system |
GB9216601A Expired - Fee Related GB2256072B (en) | 1988-12-13 | 1992-08-04 | Vehicle identification |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9216601A Expired - Fee Related GB2256072B (en) | 1988-12-13 | 1992-08-04 | Vehicle identification |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB2227866B (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2265243A (en) * | 1992-03-21 | 1993-09-22 | Taylor Lann Technology Limited | Apparatus for determining a vehicle registration code |
WO1993019441A1 (en) * | 1992-03-20 | 1993-09-30 | Commonwealth Scientific And Industrial Research Organisation | An object monitoring system |
EP0682794A1 (en) * | 1993-02-08 | 1995-11-22 | Indala Corporation | Hand-held dual technology identification tag reading head |
DE4446642A1 (en) * | 1994-12-19 | 1996-06-20 | Teledrive Telematik Im Verkehr | Automatic control appts. for control of vehicles entry in traffic space or authorisation to stop there |
DE4446674A1 (en) * | 1994-12-19 | 1996-06-20 | Teledrive Telematik Im Verkehr | Control system for automatic control of approach of vehicles to toll barrier e.g. parking place or tunnel |
US5608391A (en) * | 1995-05-11 | 1997-03-04 | Minnesota Mining And Manufacturing Company | Electronic license plate architecture |
US5651075A (en) * | 1993-12-01 | 1997-07-22 | Hughes Missile Systems Company | Automated license plate locator and reader including perspective distortion correction |
AT402675B (en) * | 1992-09-03 | 1997-07-25 | Schweitzer Karl Ing | DEVICE FOR MONITORING THE TRAFFIC DEVICE FOR MONITORING THE TRAFFIC OF MOTOR VEHICLES MOTOR VEHICLES |
US5657008A (en) * | 1995-05-11 | 1997-08-12 | Minnesota Mining And Manufacturing Company | Electronic license plate having a secure identification device |
EP1160734A2 (en) * | 2000-06-01 | 2001-12-05 | Quality Information Systems, S.A. | System to control and supervise vehicle transit in restricted access areas |
GB2375871A (en) * | 2001-03-30 | 2002-11-27 | Comm Res Lab | Traffic monitoring system using vehicle identification |
WO2005020181A1 (en) * | 2003-08-24 | 2005-03-03 | Aron Matalon | Apparatus and method for controlling moving vehicles |
EP1516790A1 (en) | 2003-09-16 | 2005-03-23 | Siemens Aktiengesellschaft | Identification device for valuable objects and corrresponding identification method |
EP2320385A1 (en) * | 2009-10-21 | 2011-05-11 | Florian Matschnigg | Method and system for unique identification of vehicles and related services |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5621571A (en) * | 1994-02-14 | 1997-04-15 | Minnesota Mining And Manufacturing Company | Integrated retroreflective electronic display |
US5948038A (en) | 1996-07-31 | 1999-09-07 | American Traffic Systems, Inc. | Traffic violation processing system |
AU697341B1 (en) * | 1997-12-18 | 1998-10-01 | Anthony Gerard Hudson | Satellite G.P.S. connected and bar-coded registered vehicle licence plate SATPLATE |
GB0524342D0 (en) * | 2005-11-30 | 2006-01-04 | Rfid Ct Ltd | Vehicle detection device |
GB2458701C (en) * | 2008-03-28 | 2018-02-21 | Pips Tech Limited | Vehicle identification system |
GB0903471D0 (en) * | 2009-03-02 | 2009-04-08 | Plate Ltd E | Data collection device |
CN103123688A (en) * | 2012-12-30 | 2013-05-29 | 信帧电子技术(北京)有限公司 | Vehicle logo identification method and device |
CN105206061A (en) * | 2015-09-18 | 2015-12-30 | 成都融创智谷科技有限公司 | Method relying on intelligent urban transportation capable of identifying license plates through collection of RFID videos |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4068232A (en) * | 1976-02-12 | 1978-01-10 | Fairchild Industries, Inc. | Passive encoding microwave transponder |
US4303904A (en) * | 1979-10-12 | 1981-12-01 | Chasek Norman E | Universally applicable, in-motion and automatic toll paying system using microwaves |
GB8404562D0 (en) * | 1984-02-21 | 1984-03-28 | Plessey Co Plc | Data capture system |
IT1211771B (en) * | 1987-09-11 | 1989-11-03 | Rinaldi Massimo | TRAFFIC CONTROL SYSTEM FOR MOBILE VEHICLES AND / OR PEOPLE USING A FIXED STATION AND A PROGRAMMABLE ELEMENT CARRIED BY THESE MOBILE VEHICLES AND / OR PEOPLE |
-
1989
- 1989-12-12 GB GB8928101A patent/GB2227866B/en not_active Expired - Fee Related
-
1992
- 1992-08-04 GB GB9216601A patent/GB2256072B/en not_active Expired - Fee Related
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993019441A1 (en) * | 1992-03-20 | 1993-09-30 | Commonwealth Scientific And Industrial Research Organisation | An object monitoring system |
AU671106B2 (en) * | 1992-03-20 | 1996-08-15 | Commonwealth Scientific And Industrial Research Organisation | An object monitoring system |
US5809161A (en) * | 1992-03-20 | 1998-09-15 | Commonwealth Scientific And Industrial Research Organisation | Vehicle monitoring system |
GB2265243A (en) * | 1992-03-21 | 1993-09-22 | Taylor Lann Technology Limited | Apparatus for determining a vehicle registration code |
AT402675B (en) * | 1992-09-03 | 1997-07-25 | Schweitzer Karl Ing | DEVICE FOR MONITORING THE TRAFFIC DEVICE FOR MONITORING THE TRAFFIC OF MOTOR VEHICLES MOTOR VEHICLES |
EP0682794A1 (en) * | 1993-02-08 | 1995-11-22 | Indala Corporation | Hand-held dual technology identification tag reading head |
EP0682794A4 (en) * | 1993-02-08 | 1996-12-27 | Indala Corp | Hand-held dual technology identification tag reading head. |
US5651075A (en) * | 1993-12-01 | 1997-07-22 | Hughes Missile Systems Company | Automated license plate locator and reader including perspective distortion correction |
DE4446642A1 (en) * | 1994-12-19 | 1996-06-20 | Teledrive Telematik Im Verkehr | Automatic control appts. for control of vehicles entry in traffic space or authorisation to stop there |
DE4446674A1 (en) * | 1994-12-19 | 1996-06-20 | Teledrive Telematik Im Verkehr | Control system for automatic control of approach of vehicles to toll barrier e.g. parking place or tunnel |
US5657008A (en) * | 1995-05-11 | 1997-08-12 | Minnesota Mining And Manufacturing Company | Electronic license plate having a secure identification device |
US5608391A (en) * | 1995-05-11 | 1997-03-04 | Minnesota Mining And Manufacturing Company | Electronic license plate architecture |
EP1160734A2 (en) * | 2000-06-01 | 2001-12-05 | Quality Information Systems, S.A. | System to control and supervise vehicle transit in restricted access areas |
EP1160734A3 (en) * | 2000-06-01 | 2004-09-01 | Quality Information Systems, S.A. | System to control and supervise vehicle transit in restricted access areas |
GB2375871A (en) * | 2001-03-30 | 2002-11-27 | Comm Res Lab | Traffic monitoring system using vehicle identification |
US6781523B2 (en) | 2001-03-30 | 2004-08-24 | National Institute Of Information And Communications Technology | Road traffic monitoring system |
GB2375871B (en) * | 2001-03-30 | 2004-11-24 | Comm Res Lab | Road traffic monitoring system |
WO2005020181A1 (en) * | 2003-08-24 | 2005-03-03 | Aron Matalon | Apparatus and method for controlling moving vehicles |
US7936282B2 (en) | 2003-08-24 | 2011-05-03 | Aron Matalon | Apparatus and method for controlling moving vehicles |
EP1516790A1 (en) | 2003-09-16 | 2005-03-23 | Siemens Aktiengesellschaft | Identification device for valuable objects and corrresponding identification method |
EP2320385A1 (en) * | 2009-10-21 | 2011-05-11 | Florian Matschnigg | Method and system for unique identification of vehicles and related services |
Also Published As
Publication number | Publication date |
---|---|
GB2256072A (en) | 1992-11-25 |
GB8928101D0 (en) | 1990-02-14 |
GB9216601D0 (en) | 1992-09-16 |
GB2256072B (en) | 1993-04-28 |
GB2227866B (en) | 1993-05-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB2227866A (en) | Vehicle identification | |
JP3183137B2 (en) | Vehicle identification system | |
JP2543235B2 (en) | IC card adapter | |
AU718915B2 (en) | Method and device for registering the outer characteristics of a vehicle in a road toll unit | |
RU2210110C2 (en) | Road inspection device for checking vehicle-mounted instrument for correct road tall | |
US5859415A (en) | Method and apparatus for the registration of a vehicle(s) in a free flow toll facility by tracking the vehicle along a path in the toll facility area | |
US5864306A (en) | Detection regions for transponder tracking | |
BR9813812B1 (en) | method for automatic tolling of vehicles. | |
JPH08186534A (en) | Mobile object communicating method | |
JPH0578880B2 (en) | ||
CA2194826A1 (en) | Toll collection system capable of properly collecting a toll from a user without requiring any special equipment to be mounted in a vehicle | |
CN1077702C (en) | Method and device for radio communication between mutually movable objects | |
US6525673B1 (en) | Expressway control system | |
KR100400102B1 (en) | Method for controling vehicle using a vin | |
US6304192B1 (en) | Authorization system and authorization method | |
KR950001559A (en) | Highway fare control system | |
JPH03189798A (en) | Vehicle discriminating system and id plate used therefor | |
Garibotto et al. | Dynamic vision for license plate recognition | |
JPH0896186A (en) | Moving body discriminating device and its moving body deciding method | |
KR970022889A (en) | Vehicle management system and method | |
CZ2005528A3 (en) | Circuit arrangement of OBU vehicle unit in telematic system | |
JP2004302588A (en) | Charge collecting system | |
Osório et al. | Flexible and plugged peer systems integration to its-ibus: The case of efc and lpr systems | |
JPH02159700A (en) | Id plate | |
JPH02159699A (en) | Automatic vehicle identifying device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20061212 |