JP5195634B2 - ETC terminal device, ETC roadside machine, and ETC system - Google Patents

Description

  The present invention relates to an ETC terminal device, an ETC roadside device, and an ETC system.

  An ETC (registered trademark) system is used for automatic billing processing such as tolls on toll roads. In this type of ETC system, an error in billing processing may occur due to a bad credit card insertion into the in-vehicle device. Therefore, there is a technique for preventing such an error by storing credit card information in the in-vehicle device in advance so that the card does not have to be inserted during the billing process (Patent Document 1). If credit card information can be stored, it may be possible to store a plurality of credit cards. However, in such a case, it is necessary to select a credit card to be used for billing, and it is troublesome for the user to select each time.

  Therefore, there is a technique for automatically selecting an appropriate credit card (Patent Document 2). Specifically, it is as follows. The in-vehicle device preliminarily obtains information about a discount of credit card information (hereinafter referred to as “in-vehicle device card information”) from a user and stores it for a plurality of credit cards. When the in-vehicle device is required for the billing process, the in-vehicle device selects one of the in-vehicle device card information based on the information related to the discount input in advance by the user. Then, the in-vehicle device transmits the selected in-vehicle device card information to the roadside device to realize the charging process. Therefore, when the user stores information related to the discount or the like in advance in the in-vehicle device, the billing process using the card information for the in-vehicle device having the largest discount amount becomes possible.

JP 2008-092539 A JP 2009-086966 A

  The problem with this technology is that the user of the in-vehicle device needs to appropriately update information related to the discount. Otherwise, in-vehicle device card information with a large discount may not be used. This is because there are frequent revisions to tolls and changes in discounts, and if information about discounts is not changed each time, it may not fit the actual situation. In view of this problem, an object of the present invention is to make it unnecessary for a user of a terminal device to frequently set information regarding a discount when realizing appropriate charging.

  In order to achieve this object, the ETC according to claim 1 receives charging destination specifying information which is information capable of specifying a charging destination, and performs processing for charging using the received charging destination specifying information. This is an ETC terminal device that transmits charging destination specifying information to an ETC roadside device that can output discount information that can specify a charging discount for each charging destination specifying information. The ETC terminal device includes storage means, terminal acquisition means, terminal selection means, and selection result transmission means.

  The storage means stores a plurality of charging destination specifying information. The terminal acquisition means acquires discount information output by the ETC roadside machine. Based on the discount information acquired by the terminal acquisition unit, the terminal selection unit selects a plurality of charging destination specifying information stored by the storage unit, which has the maximum charging discount. The selection result transmission unit transmits the billing destination specifying information selected by the terminal selection unit to the ETC roadside device.

  According to the present invention, it is not necessary for the user of the ETC terminal apparatus to frequently set information regarding discounts when realizing appropriate billing. This is because the ETC terminal device acquires discount information from the ETC roadside device.

  Note that the discount information output by the ETC roadside device may be triggered by a request from the ETC terminal device or may be executed constantly. The billing destination specifying information is, for example, information written on a credit card as information necessary for billing. The billing destination is, for example, an account designated as a credit card billing destination.

  The discount information must be maintained and updated at an appropriate level at least immediately before output by the ETC roadside machine. Such maintenance / update requires some form of human management. In the first place, the discount is an artificial arrangement and is not automatically determined by the device. The discount information may be acquired from the outside by the ETC roadside device, or may be stored by the ETC roadside device by itself. In addition, “discount” includes not only direct discounting of charges but also a way of returning in another form later.

  The invention of claim 2 is an ETC roadside device that communicates with an ETC terminal device that stores a plurality of billing destination identification information, which is information capable of identifying a billing destination. And a roadside device that selects a billing discount with the maximum billing discount among a plurality of billing destination identification information stored by the ETC terminal device based on discount information that can identify a billing discount for each billing destination identification information A selection means is provided. The ETC roadside machine uses the billing destination identification information selected by the roadside machine selection means and acquired by communication from the ETC terminal device for processing for billing.

  According to the present invention, it is not necessary for the user of the ETC terminal apparatus to frequently set information regarding discounts when realizing appropriate billing. This is because the billing destination specifying information is selected not from the ETC terminal device but from the ETC roadside device. Therefore, there is no need for the user of the ETC terminal device to set information regarding the discount.

  By the way, the invention of claim 2 is preferably as follows. The ETC roadside device of claim 3 comprises all acquisition means for acquiring all the plurality of billing destination specifying information stored in the ETC terminal device from the ETC terminal device. Then, the roadside machine selecting means selects the one with the maximum discount for charging from the charging destination specifying information acquired by all the acquiring means.

  The transmission of the billing destination specifying information by the ETC terminal device for realizing all acquisition means may be triggered by a request from the ETC roadside device, or may be executed when communication is established. .

  By the way, the invention of claim 2 is preferably as follows. In the ETC roadside device of claim 4, the discount information is associated with the type information indicating the type of the billing destination specifying information and the ID of the ETC terminal device, and is defined for each type information and the type information. It has a structure in which information indicating a discount is associated.

  The roadside machine selection means includes an ID acquisition means, a first extraction means, a second extraction means, and an information acquisition means. The ID acquisition unit acquires an ID from the ETC terminal device. The first extraction unit extracts a portion associated with the ID acquired by the ID acquisition unit from the discount information. The second extraction unit extracts the type information with the maximum discount from the type information included in the portion extracted by the first extraction unit. The information acquisition unit acquires the billing destination identification information corresponding to the type information extracted by the second extraction unit from the ETC terminal device. And this ETC roadside machine selects the billing destination specific information which the information acquisition means acquired.

  The transmission of the ID by the ETC terminal device for realizing the ID acquisition means may be triggered by a request from the ETC roadside device, or may be executed when communication is established.

  The above contents can also be expressed as a system as follows. An invention according to claim 5 is an ETC system comprising an ETC roadside device that performs processing for charging using billing destination specifying information that is information that can specify a charging destination, and an ETC terminal device that communicates with the ETC roadside device It is. In this ETC system, the ETC roadside machine acquires discount information that can specify a discount for charging for each charging destination specifying information. Then, the charging destination specifying information stored in a plurality of ETC terminal devices is selected based on the acquired discount information. The selected billing destination specifying information is used for billing processing. The billing destination specifying information may be selected by an ETC terminal device or an ETC roadside device.

The block block diagram of an ETC system. The block block diagram with a vehicle-mounted apparatus and a roadside machine. The flowchart of a prioritization process. Billing condition table and discount information table. A ladder chart of the first billing process. Ladder chart of entrance processing. A ladder chart of the second billing process. A ladder chart of the third billing process.

  FIG. 1 is a block diagram showing an ETC system 1 for charging a toll on a toll road. The ETC system 1 includes an in-vehicle device 10, a roadside device 20, a road business computer 30, a DB (database) center 40, and a credit card management computer 50.

  The in-vehicle device 10 is mounted on an automobile and stores in-vehicle device card information. The card information for in-vehicle devices is information written on a credit card. That is, it is information necessary for the billing process, and includes a card number, expiration date, name information, card company number, card type information, and the like. The in-vehicle device 10 stores in-vehicle device card information for a plurality of credit cards. Moreover, although the in-vehicle apparatus 10 is owned by many users one by one, only one is illustrated.

  The roadside machine 20 is installed in a toll gate lane of a toll road, and transmits and receives data necessary for toll collection with the in-vehicle device 10 <6> (symbol for identifying an arrow in FIG. 1; the same applies hereinafter) for road business use. Request the computer 30 to process the charge (<7>). Many roadside machines 20 are also installed, but only one is shown.

  The road business computer 30 is a computer owned by a road operator (corporate that manages toll roads), and stores a discount information table (see FIGS. 4D to 4G) that is information related to toll discounts on the roadside. It transmits to the machine 20 <5>. Further, the road business computer 30 transfers the billing request from the roadside machine 20 to the credit card management computer 50 <8>. The DB center 40 is configured by a well-known computer, generates and stores the discount information table described above, and provides it to the road business computer 30 upon request <4>.

  The DB center 40 is provided with in-vehicle device card information and the in-vehicle device ID from the user of the in-vehicle device 10 <1>. At this time, the in-vehicle device 10 and the DB center 40 do not communicate with each other, but the user of the in-vehicle device 10 transmits information to the DB center 40 via the Internet using a personal computer or the like.

  In the DB center 40, information relating to discount information from the road business computer 30 (see FIG. 4A) is <3>, and from the credit card management computer 50, the traffic determined for each card type information. Information relating to the discount of charges (see FIG. 4B) is provided for each <2>. Based on these pieces of information, a discount information table is generated (described later in FIG. 3).

  Further, the credit card management computer 50 transmits information related to the credit card contract to the DB center 40 <2>. The DB center 40 collates information regarding the contract transmitted from the credit card management computer 50 with information from the user of the in-vehicle device 10. If the verification is not successful, processing such as returning an error to the user of the in-vehicle device 10 and the credit card management computer 50 is performed.

  FIG. 2 is a block configuration diagram showing an internal configuration of the in-vehicle device 10 and the roadside machine 20. The in-vehicle device 10 includes a control unit 11, a storage unit 12, a card interface 13, a SAM 14, a DSRC unit 15, an HMI 16, and a wireless antenna 17.

  The wireless antenna 17 is an antenna for DSRC (Dedicated Short Range Communication). The DSRC unit 15 performs transmission / reception of information by DSRC via the wireless antenna 17 by a wireless signal in the 5.8 GHz band. The communication partner is the roadside machine 20.

  An HMI (Human Machine Interface) 16 is an interface for communication between a person and a device. Specifically, it is composed of operation buttons, LEDs, speakers, and the like. The SAM (Secure Application Module) 14 is a module that encrypts the contents of communication with the roadside device 20 (in-vehicle device card information, ID, etc.) and decrypts the received signal. The card interface 13 is an interface for reading information written on the credit card. This information is the basis of the card information for the in-vehicle device.

  The storage unit 12 is composed of a device (for example, a flash memory) that does not require a memory holding operation, and stores toll road entrance information (described later), in-vehicle device card information, and the like. The control unit 11 includes a CPU, a ROM, a RAM, an I / O, and the like, and comprehensively controls other components of the in-vehicle device 10.

  On the other hand, the roadside machine 20 includes an antenna unit 21, a transmission / reception unit 22, a control processing unit 23, a failure diagnosis unit 24, an interface unit 25, and a processing module (for backup) 26. The aerial unit 21 receives a 5.8 GHz band radio signal transmitted from the in-vehicle device 10 and transmits it to the transmitting / receiving unit 22 by wire. Further, the antenna unit 21 converts the signal transmitted from the transmission / reception unit 22 by wire into a radio signal of 5.8 GHz band and transmits the signal to the in-vehicle device 10.

  The transmission / reception unit 22 demodulates the signal from the antenna unit 21 to generate a 1024 kbps digital signal, or modulates the 1024 kbps digital signal received from the interface unit 25 and transmits it to the antenna unit 21.

  The failure diagnosis unit 24 monitors the state of the roadside machine 20 (diagnosis of normal state and abnormal state) as a self-diagnosis function. Specifically, an initial diagnosis at startup and a constant diagnosis that is always performed during operation are performed. The contents of the diagnosis are control abnormality (abnormality of the control processing unit 23), wireless abnormality (abnormality of the transmission / reception unit 22 and the antenna unit 21), or power interruption (the failure diagnosis unit 24 has a self-power supply). It can operate even if the power is cut off). The power is converted from the AC power supplied from the lane server (a device for controlling the communication of the roadside machine 20, not shown in FIG. 1) to the DC power and supplied to each component. .

  The interface unit 25 performs interface conversion of the 1024 kbps digital signal received from the lane server described above, and transmits it to the transmission / reception unit 22. Further, the interface conversion of the 1024 kbps digital signal received from the transmission / reception unit 22 is performed and transmitted to the lane server.

The control processing unit 23 performs wireless control according to an instruction from the lane server. Further, the diagnosis result from the failure diagnosis unit 24 is notified in response to an inquiry from the lane server.
The processing module (for backup) 26 includes the same components as the antenna unit 21, the transmission / reception unit 22, the control processing unit 23, the failure diagnosis unit 24, and the interface unit 25, and the working antenna unit 21, the transmission / reception unit 22, and the control unit. Backup is performed when the processing unit 23, the failure diagnosis unit 24, and the interface unit 25 fail.

  FIG. 3 is a flowchart showing the prioritization process. This process is executed mainly by the DB center 40, and includes a new card registration by the user of the in-vehicle device 10 and a new discount related to a charge from the road business computer 30 or the credit card management computer 50. This process is executed every time information (see FIGS. 4A and 4B) is provided.

  To explain the outline of this process, the processing moves to FIG. FIG. 4A is a table showing information relating to discounts provided from the road business computer 30, and FIG. 4B is a table showing information relating to discounts provided from the credit card management computer 50. Information provided from the road business computer 30 is determined by each road business operator and is provided as information for each road business operator. The information provided from the credit card management computer 50 is information determined by a credit card company and is provided as information for each card type information.

  In these tables, a discount amount is associated with each division of time zone and section (distance). The purpose of this process is to generate and store a discount information table in which the information shown in these tables is arranged in a form that can be used for the accounting process.

Returning to FIG. When this process is started, an arbitrary one is selected from the IDs of the in-vehicle devices 10 stored as provided by the user of each in-vehicle device 10 (S105). (However, S105 is a step that is repeated for the number of IDs to be processed among the stored IDs, and the already selected ID is not selected twice. The ID to be processed is stored. All IDs that have been assigned may be used, or only newly provided IDs may be used.)
Next, an arbitrary one is selected from the billing conditions (see FIG. 4C) (S110). (However, as with the ID, what has already been selected is not selected twice.) The billing conditions are discount information tables for generating discount information for all the tables in FIGS. 4A and 4B later. It is the result of dividing the time zone and distance for each road operator so that it can be reflected in FIG. 4C illustrates the charging conditions. The accounting conditions shown are as follows.
-Condition a is road operator: former / time zone: holiday 0: 00 to 04: 00 / section: α point → γ point (100 km or more).
-Condition (i) is: Road operator: Party A / Time zone: Holiday from 9:00 to 17: 00 / Section: α point → β point (less than 100 km).
The condition c is road operator: second / time zone: holiday 0: 00-04: 00 / section: δ point → ε point (100 km or more).
Condition d is road operator: second / time zone: weekdays 0:00 to 24: 00 / section: δ point → ζ point (less than 100 km).
・ Other than this, there are cases where the price system does not depend on distance.

  Returning to FIG. Under the conditions selected in S110, the card type information that is a part of the card information for the in-vehicle device is ranked in descending order of the sum of the discount amounts by the road operator and the credit card company (S120). The reason for ranking using the card type information is that charges and discounts are determined for each card type information. If the discount is the same for any card type information, the default card designated in advance by the user of the in-vehicle device 10 is ranked as the first priority. For those for which the order is not determined in this procedure, the order is determined by other methods (for example, the one registered earlier by the user of the in-vehicle device 10 is ranked higher). The ranking result forms a discount information table.

  Then, it is determined whether ranking has been made for all conditions (S130). If it is determined that there are still unranked conditions (NO in S130), the process returns to S110. On the other hand, if it is determined that all the conditions have been ranked (S130 YES), it is determined whether all IDs have been selected (S140). If it is determined that an unselected ID remains (S140 NO), the process returns to S105. On the other hand, if it is determined that all the IDs have been selected (YES in S140), this process ends.

  4D to 4G are diagrams showing discount information tables. The illustrated table relates to a certain ID. 4A to 4C are not related to the ID. Since the road business computer 30 and the credit card management computer 50 do not manage IDs, information for each ID is not output.

  There are three in-vehicle device card information stored in the in-vehicle device 10 corresponding to this ID, and each includes the card A, B, or C. Therefore, as shown in FIGS. 4D to 4G, priorities are assigned to the card type information A, B, and C. Conditions A to U are ranked in descending order of discount. In condition d, since there is no discount for any card type information, the default card A is ranked first. Note that, although not in this table, the card with an expired card has the lowest priority. Next, processing related to billing using the discount information table will be described.

  FIG. 5 is a ladder chart showing the first billing process. This process is a process executed mainly by the in-vehicle device 10 and the roadside machine 20. Further, this is a process executed when the toll is determined regardless of the travel distance. The vehicle-mounted device 10 is started when the vehicle-mounted device 10 enters an area where communication with the roadside device 20 is possible.

  First, the in-vehicle device 10 receives a BST (Beacon Service Table: information that is defined to be transmitted when an initial connection is made) from the roadside device 20 (S210). Then, the in-vehicle device 10 transmits VST (Vehicle Service Table: information defined as a reply to BST) to the roadside device 20 (S220). Next, the in-vehicle device 10 and the roadside machine 20 perform mutual authentication (S225). Next, the roadside device 20 transmits a transmission request for the card information for the in-vehicle device and the ID to the in-vehicle device 10 (S230). Then, the in-vehicle device 10 transmits all of the plurality of in-vehicle device card information stored in the storage unit 12 and the ID to the roadside device 20 (S240).

  Then, the roadside device 20 checks with the DB center 40 whether the combination of the card information for in-vehicle devices acquired at S240 and the ID is stored in the DB center 40 (if it is not stored, an error occurs. The description in that case is omitted, and it is assumed that it is stored in the following description) (S252). Next, the roadside machine 20 acquires a part about the acquired ID and the charging condition applied this time from the DB center 40 in the discount information table (S254). Next, the roadside device 20 selects the in-vehicle device card information acquired in S254 that includes the card type information having a higher priority in the acquired table (S256). As a general rule, the card type information having a high priority is selected by selecting the first one. If the first one has some trouble (payment suspension state due to arrears of payment, etc.), the card type information is selected by lowering the order.

  Next, the roadside device 20 performs a billing process using the card information for in-vehicle devices selected in S256 (S260). Specifically, the in-vehicle device card information, the gate passage time, the vehicle type information, and the like are transmitted to the road business computer 30 to request processing related to charge billing. Next, the roadside device 20 transmits the result of the charging process (whether normal completion is completed and the charged amount) to the in-vehicle device 10 (S265).

  Then, the in-vehicle device 10 notifies the user of the result of the billing process (S270). Specifically, the HMI 16 (LED, speaker, etc.) emits light indicating normal completion, or outputs a voice saying that “the toll charge of 650 yen has been made normally”.

  FIG. 6 is a ladder chart showing the entrance process. This process is a process that is mainly executed by the in-vehicle device 10 and the roadside machine 20, and is a process that is executed at the gate as an entrance when the toll is determined depending on the travel distance. This process is started when the in-vehicle device 10 enters an area where communication with the roadside device 20 is possible. However, S310 to S340 are the same as the first billing process and will not be described. The step number with the same last two digits is the same content.

  The roadside machine 20 performs verification after acquiring the card information for in-vehicle devices (S340) (S350). Specifically, in order to check whether or not each in-vehicle device card information can be used for the charging process on the toll road, whether or not the expiration date is satisfied is verified. If there is at least one in-vehicle device card information that can be used as a result of the verification, the roadside device 20 proceeds to S360. On the other hand, if there is no card information for in-vehicle devices that can be used, the in-vehicle device 10 is notified and a signal that keeps the gate bar provided at the entrance gate closed is output to the gate bar opening / closing device (see FIG. None).

  In S360, when there is at least one in-vehicle device card information that can be used, the roadside device 20 generates entrance information (S360). The entrance information is information indicating from what IC to which toll road the month, day, hour and minute. And the roadside machine 20 transmits the verification result in S350, and entrance information to the vehicle equipment 10 (S370). Then, the in-vehicle device 10 notifies the user of the verification result from the roadside device 20, and stores the entrance information (S380). Then, this process ends.

  Then, processing similar to the first billing processing is executed at the exit toll gate. The difference with respect to the first billing process is that "executed when the toll is determined regardless of the travel distance" is executed at the gate serving as an exit when the toll is determined depending on the travel distance. "In S240, the in-vehicle device 10 transmits the entrance information to the roadside device 20 in addition to the in-vehicle device card information. The rest is the same.

  State the effect. According to the ETC system 1, it is not necessary for the user of the in-vehicle device 10 to frequently set information regarding discounts when realizing charging using the card with the largest discount. This is because information related to discounts is managed and updated in the DB center 40, and the roadside device 20 acquires the information from the DB center 40 at the time of billing and is used for card selection. Therefore, if a road operator or a credit card company appropriately manages information related to discounts, it is possible to realize billing using the card with the largest discount.

  Only differences from the first embodiment will be described. In the second embodiment, a second charging process is executed instead of the first charging process. FIG. 7 is a ladder chart showing the second billing process. However, since S410 to S425, S465, and S470 are the same as the first billing process, description thereof is omitted. The step number with the same last two digits is the same content.

  After mutual authentication (S425), the in-vehicle device 10 transmits the ID to the roadside device 20 (S427). When receiving the ID, the roadside machine 20 acquires from the DB center 40 the portion related to the acquired ID and the billing conditions applied this time in the discount information table (S430). Next, the roadside machine 20 extracts card type information with a high priority (S435). Next, the roadside device 20 requests the in-vehicle device card information including the card type information extracted in S435 to the in-vehicle device 10 (S440). Then, the in-vehicle device 10 transmits the requested in-vehicle device card information to the roadside device 20 (S450). Then, the roadside device 20 charges using the in-vehicle device card information (S460).

  That is, the difference from the first embodiment is that not all the in-vehicle device card information stored in the in-vehicle device 10 is acquired, but only the information after determining which in-vehicle device card information is selected. Is obtained from the in-vehicle device 10. Thus, the second embodiment has the same effect because the procedure is slightly different from the first embodiment.

  Only differences from the first embodiment will be described. In the third embodiment, a third billing process is executed instead of the first billing process. FIG. 8 is a ladder chart showing the third billing process. However, since S510 to S525, S565, and S570 are the same as the first billing process, description thereof is omitted. The step number with the same last two digits is the same content.

  After mutual authentication (S525), the in-vehicle device 10 transmits the ID to the roadside device 20 (S530). And the roadside machine 20 acquires the part about the received ID and the charging conditions applied this time from the DB center 40 in the discount information table (S540). And the roadside machine 20 transmits the acquired information to the vehicle-mounted apparatus 10 (S545). The in-vehicle device 10 selects card information for in-vehicle devices including card type information with high priority based on the information received from the roadside device 20 (S550). And the vehicle-mounted apparatus 10 transmits the card information for vehicle-mounted apparatuses of the selected card to the roadside machine 20 (S555). The roadside device 20 charges using the received in-vehicle device card information (S560).

Also in Example 3, the same effect as Example 1 and Example 2 is acquired. This is because the main body that selects the card is replaced by the in-vehicle device 10 from the roadside device 20.
The correspondence between the embodiments and the claims will be described. S230 / S240 is all acquisition means, S252 to S256 / S427 to S450 are roadside machine selection means, S427 is ID acquisition means, S430 is first extraction means, S435 is second extraction means, S440 / S450 is information acquisition means, S545 Corresponds to the software of the terminal acquisition unit, S550 of the terminal selection unit, and S555 of the selection result transmission unit. The storage unit 12 corresponds to the hardware of the storage unit.

DESCRIPTION OF SYMBOLS 1 ... ETC system, 10 ... In-vehicle apparatus, 11 ... Control part, 12 ... Memory | storage part, 13 ... Card interface, 15 ... DSRC part, 16 ... HMI, 17 ... Radio antenna, 20 ... Roadside machine, 21 ... Aerial part, 22 Transmission / reception unit, 23 Control processing unit, 24 Failure diagnosis unit, 25 Interface unit, 26 Processing module (for backup), 30 Road computer, 40 DB center, 50 Credit card management computer

Claims (5)

An ETC (registered trademark) roadside device that receives charging destination specifying information, which is information capable of specifying a charging destination, and performs processing for charging using the received charging destination specifying information. In an ETC terminal device that transmits the charging destination specifying information to an ETC roadside device that can output discount information that can specify a discount for charging for each information,
Storage means for storing a plurality of billing destination specifying information;
Terminal acquisition means for acquiring the discount information output by the ETC roadside machine;
Based on the discount information acquired by the terminal acquisition means, a terminal selection means for selecting the largest charge discount among the plurality of charge destination identification information stored by the storage means;
An ETC terminal apparatus comprising: a selection result transmission unit configured to transmit the billing destination identification information selected by the terminal selection unit to the ETC roadside device. An ETC roadside device that communicates with an ETC terminal device that stores a plurality of charging destination specifying information that is information that can specify a charging destination,
A roadside device that selects, from among a plurality of billing destination specifying information stored by the ETC terminal device, a billing discount with the maximum billing based on discount information that can specify a billing discount for each of the billing destination specifying information A selection means,
The ETC roadside machine characterized in that the billing destination specifying information selected by the roadside machine selection means and acquired from the ETC terminal device by communication is used for processing for charging. All acquisition means for acquiring all of a plurality of billing destination specifying information stored in the ETC terminal device from the ETC terminal device;
The ETC roadside machine according to claim 2, wherein the roadside machine selecting unit selects the one with the maximum charging discount from the charging destination specifying information acquired by the all acquiring unit. The discount information is associated with type information indicating the type of the billing destination specifying information and the ID of the ETC terminal device, the type information, and information indicating a discount determined for each type information. Are associated with each other,
The roadside machine selecting means is
ID acquisition means for acquiring the ID from the ETC terminal device;
First extraction means for extracting a portion associated with the ID acquired by the ID acquisition means from the discount information;
Among the type information included in the portion extracted by the first extraction means, the second extraction means for extracting the one with the largest discount for charging;
An information acquisition unit for acquiring the billing destination identification information corresponding to the type information extracted by the second extraction unit from the ETC terminal device;
3. The ETC roadside device according to claim 2, wherein the billing destination specifying information acquired by the information acquisition means is selected. An ETC system comprising an ETC roadside device that performs charging processing using billing destination specifying information that is information that can specify a charging destination, and an ETC terminal device that communicates with the ETC roadside device,
The ETC roadside device acquires discount information that can specify a discount for charging for each of the charging destination specifying information, and the charging discount is the largest among the plurality of charging destination specifying information stored in the ETC terminal device. An ETC system, wherein a thing is selected based on the obtained discount information, and the selected billing destination specifying information is used for processing for billing.

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