JP2012020712A - Train operation support system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a train operation support system, which contributes to the achievement of smooth operation of trains.SOLUTION: The train operation support system is for a railroad system to operate a plurality of trains simultaneously, and includes: a wireless distribution device 2 for obtaining track circuit information showing positions of trains on the rail from an interlock device 1 and distributing the obtained information to each traveling train; and an onboard display 3 disposed in the train for notifying a driver of indication states of signals present in a predetermined range of the forward and backward areas in a traveling direction including the current location of the train, based on the track circuit information distributed from the wireless distribution device 2.

Description

  The present invention relates to a train operation support system that provides a function to assist signal display when a driver of a train performs operation based on a traffic light to assist the operation.

  When a driver drives a train, speed control is performed according to a traffic light on the course. When trains are operated at very short intervals such as in the morning hours, the range that can be determined by the driver is limited by the existing signal display, and it is difficult to perform smooth driving.

  Therefore, for example, Patent Document 1 describes a technique for shortening the time until the train departs by notifying the signal display of the departure signal.

JP 2006-56442 A

  When the above conventional technique is applied, it is possible to shorten the departure time of a stopped train and realize a smooth operation of the train. On the other hand, regarding a running train, it is desired to provide a mechanism that supports the operation more smoothly by notifying a change notice or the like about the signal display ahead.

  This invention is made in view of the above, Comprising: It aims at obtaining the train driving assistance system which implement | achieves smooth operation | movement by assisting the driving | running | working of the train in driving | running | working.

  In order to solve the above-described problems and achieve the object, the present invention is a train operation support system for a railway system that operates a plurality of trains at the same time, and acquires track circuit information indicating the position of the train on the track from the interlocking device. And the wireless distribution device that distributes the acquired information to each running train, and the current position of the own train based on the track circuit information that is installed in each train and distributed from the wireless distribution device, And an on-vehicle display device that notifies the driver of the display state of the traffic light within a certain range in the forward and backward directions of the traveling direction.

  According to the present invention, there is an effect that smooth operation can be realized by supporting driving of a running train.

FIG. 1 is a diagram showing an example of the overall configuration of a train operation support system according to the present invention. FIG. 2 is a diagram illustrating an example of a display for informing the driver of the current signal status. FIG. 3 is a diagram illustrating an operation of the train operation support system according to the second embodiment. FIG. 4 is a diagram for explaining the train operation support system according to the fourth embodiment. FIG. 5 is a diagram for explaining the train operation support system according to the fourth embodiment. FIG. 6 is a diagram illustrating an example of information notified to the driver by the train driving support system according to the fourth embodiment.

  Hereinafter, an embodiment of a train operation support system according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

  First, the railway (railway system) assumed in each embodiment will be briefly described. In a railway, the presence of a train can be determined using a track circuit that is discriminated by a short circuit between the tracks when the train is present. By using the information of the track circuit, it can be determined at which position the train is present. However, this information is only about the presence or absence of the train, and it is not possible to check the details of the train (existing vehicle / type / running state) on the track circuit information alone. Can not. Normally, track circuit information is collected in the interlocking device. The interlocking device not only collects track circuit information, but also controls switches (points) and traffic lights installed beside the track.

Embodiment 1 FIG.
FIG. 1 is a diagram showing an example of the overall configuration of a train operation support system according to the present invention. This train operation support system is installed on the ground, and the interlock device 1 that controls the switch (not shown) and the traffic light is installed on the ground in the same manner as the interlock device 1, and acquires desired information from the interlock device 1. A radio distribution device 2 that transmits from a radio antenna to each train, and an on-vehicle display device 3 that is installed in the cab of each train and performs display for supporting driving are configured.

  The operation of the train operation support system of this embodiment will be described.

  In the train operation support system of the present embodiment, the interlocking device 1 acquires and acquires information on each track circuit (information on each track circuit within the control target range) corresponding to each installation position of the traffic signal to be controlled. Each traffic light is controlled based on the track circuit information. Further, when the wireless distribution device 2 requests information necessary for supporting the driving of the train, the track circuit information on all the routes on which the own train travels is collected and transmitted to the wireless distribution device 2. The position of the train in each blocked section can be grasped from the track circuit information. In addition, it is impossible to grasp the route information at the branch or the departure judgment of the train while the station is stopped only by the position of the current line. Therefore, the traffic signal information (information on the display contents of each traffic signal) and the switch information (information on the status of each switch) are aggregated and transmitted to the wireless distribution device 2 as necessary. In the following description, the information (track circuit information, traffic signal information, and switch information) transmitted to the wireless distribution device 2 as information necessary for performing train operation support is referred to as aggregate information.

  The wireless distribution device 2 generates data for all routes to be transmitted to the on-board display device 3 of each train based on the aggregate information transmitted from the interlocking device 1 or the like. When receiving a request for information provision from the on-board display device 3 installed in the train, the wireless distribution device 2 wirelessly transmits the generated data on all routes to the on-board display device 3. There are no particular restrictions on the communication method applied to wireless transmission. Any known method may be applied. For example, if the wireless distribution device 2 transmits the generated data of all routes to all the on-vehicle display devices 3 by broadcast communication, the data transmission processing in the wireless distribution device 2 is simplified.

  The on-board display device 3 installed in each train includes a display unit such as a liquid crystal display panel, and periodically requests the wireless distribution device 2 to provide information. When the data transmitted in response to this request is received, display such as shown in (a) to (c) of FIG. 2 is performed on the display unit based on the received data and the position of the current train. To inform the driver of the current status of traffic lights within a certain range before and after the train. When the device (operation panel) for performing the driving operation includes a display unit, the display shown in FIGS. 2A to 2C may be performed on the display unit. The period for requesting information provision to the wireless distribution device 2 is preferably about several seconds (1-2 seconds), but may be changed as appropriate according to the speed and state of the own train. For example, lengthen (or shorten) the cycle during low-speed driving, lengthen the cycle (or do not make a request) while stopping at the station, or the number of trains that run for a certain period of time (for example, 1 hour) It is conceivable to change the cycle accordingly (that is, shorten the cycle when the train operation interval is short). In addition, the cycle may be changed according to the distance between the front and rear trains (the cycle may be lengthened when the trains are separated from the front and rear trains (the distance is large)).

  FIG. 2 shows three patterns (a) to (c) as an example of the positional relationship between the own train and another train (in this example, the preceding train) and a notification example to the driver. It shows how the display content changes from (a) to (b) to (c) in accordance with the change in the travel position of another train (preceding train). In FIG. 2, the own train and the preceding train are traveling in the right direction, and the display content to the driver is described at the upper right of the own train (the train displayed on the left side). The state of the track circuit (signal) is written under the train. In the display to the driver, the signal display seen from the own train is displayed. Therefore, for the track circuit where the own train exists, the display to the driver and the state of the track circuit are different. For example, in FIG. 2A, the actual track circuit (signal) where the own train exists is red (R), but green (G) is displayed for the driver.

  In FIG. 2A, the preceding train is running on the track circuit two before the track circuit on which the own train is running, and the on-board display device 3 is a traffic light of the track circuit one before the own train. The driver is notified of information including content indicating that the color is yellow (Y). Thereafter, when the own train enters the next track circuit before the preceding train enters the next track circuit, the state shown in FIG.

  In FIG. 2 (b), the preceding train is running on the track circuit next to the track circuit on which the own train is running (one previous), and the on-board display device 3 is the track on the one train before the own train. Information including content indicating that the traffic light of the circuit is red (R) is notified to the driver. In addition, since there are two or more activation circuits between the following trains (there are no following trains in either of the two rear track circuits), the state of the second track circuit in the rear is green ( G). Thereafter, when the preceding train enters the next track circuit, the state shown in FIG.

  In FIG. 2 (c), as in FIG. 2 (a), the preceding train is running on the track circuit two previous to the track circuit on which the own train is running. The driver is notified of information including the content indicating that the traffic light of the track circuit immediately before is yellow (Y).

  Note that the content of notification to the driver is not limited to that shown in FIG. For the front (traveling direction), at least the state up to the first section (traffic light) that cannot be directly seen by the driver may be displayed. Although it is desirable to display one or more sections for the rear, it may not be displayed if there are restrictions such as the size of the display unit. When the rear section is displayed, the driver can grasp the positional relationship with the subsequent train, and smooth operation as the entire route can be realized. For example, if the first rear section (the section immediately after the traveling section) is a deceleration indication (Y), the driver will affect the following train if the driver decelerates more than necessary (the trains are too close to each other) It is possible to take measures such as determining that the train is to be decelerated or stopped and not decelerating more than necessary.

  The position of the own train is specified by using information obtained from a speed generator mounted on the vehicle or GPS (Global Positioning System), for example. Since the speed generator measures the rotation speed (number of rotations) of the axle, if the initial position of the train (operation start position) and the dimensions of the wheels (diameter, etc.) are known, the own train based on the measurement results of the speed generator Can be calculated. That is, the on-board display device 3 compares the current position of the own train by comparing the initial position and travel distance of the own train with the operation plan and route information (information including the installation position information of the traffic lights on the route). And the surrounding traffic lights can be identified.

  When the display shown in FIG. 2 is performed, the on-board display device 3 only needs to be able to grasp the current status of each traffic signal. Therefore, the wireless distribution device 2 uses track circuit information (trains in each blocked section) that are used in traffic signal control. Information indicating whether or not the station is on) or data including traffic signal information may be transmitted to the on-vehicle display device 3. The track circuit information indicates whether or not a train exists in the blockage section. Usually, the amount of data is smaller than that of traffic signal information. What is necessary is just to comprise so that it may transmit. In addition, if the amount of data to be transmitted wirelessly is reduced, the probability of transmission errors is also reduced and the frequency of retransmissions is reduced, resulting in a reduction in the time required for transmission (required data required). Low delay transmission can be realized). On the other hand, when the traffic signal information is transmitted, the amount of data to be transmitted is larger than when the track circuit information is transmitted, but the processing load on the on-board display device 3 can be kept low. That is, when the wireless distribution device 2 is configured to transmit track circuit information, the on-board display device 3 needs to specify the state of each traffic signal based on the received track circuit information. This processing is unnecessary and the processing load is reduced.

  In order to reduce the amount of data to be wirelessly transmitted, the wireless distribution device 2 may execute the following operation. That is, the wireless distribution device 2 stores the data transmitted last in the on-board display device 3 of each train, and stores the data when a new information provision request is received from the on-board display device 3. Compared with the data to be sent in response to the newly received request, if these data are the same (changes the display status of all traffic lights between the last data transmission and the present time In the case where no occurrence has occurred, data indicating that there has been no change from the previous time may be transmitted. Furthermore, even when the stored data and the data to be transmitted this time are not the same, data indicating only the difference between the previous time and the current time (a signal whose state has changed or information on the track circuit) may be transmitted. Good. For example, when the data transmitted from the wireless distribution device 2 to the on-board display device 3 is associated with the identification information of each traffic signal (or track circuit) and the information indicating the status, the traffic signal ( Alternatively, if only the identification information of the track circuit) and information indicating the state thereof are transmitted, the amount of data to be transmitted can be reduced. When transmitting the identification information of the track circuit whose state has changed, it is not necessary to transmit information indicating the state. There are two possible states of the track circuit: whether the train is in the corresponding block section or not, and if the change occurs, the current state (the state after the change) can be known. .

  Moreover, considering that there is regularity in the state (display) of each traffic signal, the on-board display device 3 does not display the contents shown in FIG. , The number of continuous blue (G: progress indication) sections may be displayed as a numerical value. When displaying numerical values, it is possible to simplify the control for display compared to the case of performing display as shown in FIG. 2 (the load of display control processing can be reduced). You may make it notify a driver using a character and a voice.

  Further, the on-board display device 3 periodically makes a request for providing information to the wireless distribution device 2 and analyzes the received information. As a result, it is shown in FIG. You may make it perform notification of a content. That is, when the signal display is blue over a certain section before and after the own train (the distance from the preceding and following trains is sufficiently far), the driver is not notified and the distance from the preceding train or the following train is predetermined. You may make it notify to a driver in the state below the value (state in which other trains are within n sections from the blockage section where the own train is present). Thus, by notifying the driver only when it is determined that it is necessary to notify the driver, the driver does not need to confirm the notification content of the on-board display device 3 more than necessary, and the driver Can reduce the burden of confirmation work.

  As described above, in the train operation support system of the present embodiment, the on-board display device 3 of each train requests the wireless distribution device 2 to provide information necessary for driving support periodically, and wireless distribution is performed. The device 2 generates data including information (signal device information, track circuit information, etc.) relating to the display of each traffic signal from the information acquired from the interlocking device 1 and transmits the data to the requesting on-board display device 3. The on-vehicle display device 3 that has received this data notifies the driver of the current status of the traffic lights that exist within a certain range before and after the own train. Thereby, the following effects can be obtained.

  Usually, the driver operates according to the indication of a traffic light installed beside the track. However, the only traffic lights that can be directly viewed are those for the next track circuit, and it is not possible to obtain further information. Therefore, when the deceleration indication (Y) is displayed on the traffic light that can be seen, it is determined that the further track circuit (blocking section) is the stop indication (R), and the train is decelerated. At this time, by notifying the contents as shown in FIG. 2, the driver can confirm the change of the indication earlier (change of the indication in the track circuit that cannot be seen) and perform a smooth train run. It becomes possible. That is, after entering the current track circuit at the deceleration display (Y), if the preceding train advances and the track circuit replaces the progress display (G), the on-board display device 3 indicates that there has been a change. As a result, the driver can perform operations that were impossible in the past, such as increasing the speed in the middle of the track circuit (a point where the next traffic light cannot be seen). As a result, the train can be operated smoothly.

  In some cases, an automatic train control device (ATC) is used as means for transmitting signal indications in these track circuits to the vehicle. However, installation of this apparatus requires installation of a dedicated apparatus on the ground, which is very expensive. On the other hand, the train operation support system shown in the present embodiment can be easily constructed by using, for example, a public wireless network for wireless distribution, and the cost can be reduced.

  In the above description, the case where the wireless distribution device 2 acquires aggregated information from the interlocking device 1 when receiving a request from the on-vehicle display device 3 has been described. Alternatively, the wireless distribution device 2 may autonomously acquire the aggregated information at a constant cycle. Also, instead of requesting aggregate information from the wireless distribution device 2, the interlock device 1 outputs aggregate information to the wireless distribution device 2 when the signal or switch is controlled (when the aggregate information changes, the interlock information is linked). The aggregated information may be output from the device 1 to the wireless distribution device 2).

Embodiment 2. FIG.
In the train operation support system of the first embodiment, the data generated for the wireless distribution device 2 to transmit to the on-vehicle display device 3 is data for all routes on which the train travels. That is, it is assumed that the wireless distribution device 2 generates and transmits to the on-vehicle display device 3 data indicating the states of all the traffic signals (or track circuits corresponding to each traffic signal) that are controlled by the interlocking device 1. I explained. For this reason, in a railway with a long route length, such information becomes enormous, and the amount of transmission at one time increases, which hinders real-time control. Therefore, in this embodiment, a train operation support system that reduces the amount of transmission by limiting the information to be transmitted to a portion that requires a train will be described. In addition, description is abbreviate | omitted about the part which is common in the train driving assistance system of Embodiment 1. FIG. The configuration of the train operation support system of the present embodiment is the same as that of the first embodiment (see FIG. 1).

  FIG. 3 is a diagram illustrating the operation of the train operation support system according to the present embodiment. In FIG. 3, description of an interlocking device that performs the same operation as that of the first embodiment is omitted.

  In the train operation support system of the present embodiment, when the on-vehicle display device 3 requests the wireless distribution device 2 to provide information, first, the current position of the own train is determined from a speed generator mounted on the vehicle. Get information. The method for acquiring the current position information of the own train using the speed generator is as described in the first embodiment. In addition, when the position of the own train cannot be determined from the speed generator, the current position information of the own train may be acquired separately using GPS or the like. Then, the obtained position information of the own train is transmitted to the wireless distribution device 2, and information provision (providing information necessary for train driving support) is requested. In addition, you may acquire the present position information of the own train using another method.

  When the wireless distribution device 2 receives the position information transmitted together with the information provision request from the on-vehicle display device 3, the track circuit information (or traffic lights) within a certain range centered on the current position of the train indicated by the position information. Information) is extracted from the aggregated information, data including the extracted information is generated and distributed to the on-board display device. For example, the position of the train on which the on-board display device 3 of the request source is installed can be grasped by comparing the information on the entire A line (the route on which the train is running) with the current position information of the train. In addition, information (track circuit or signal information) that needs to be transmitted to the train is extracted. Then, data including the extracted information is generated and transmitted to the on-vehicle display device 3. The wireless distribution device 2 includes at least information on the “first track circuit (traffic signal) that cannot be directly seen by the driver” in front of the train in which the on-board display device 3 of the request source is installed (direction of travel). Generate data.

  The range in which the wireless distribution device 2 extracts information and the range in which the on-board display device 3 notifies the driver (see the display shown in FIG. 2) do not have to match. That is, when the on-board display device 3 receives data including information extracted by the wireless distribution device 2, the on-vehicle display device 3 does not perform display using all the information included in the received data, but uses this data. Necessary information may be extracted from the information included in the information and used for display to the driver. In addition, when the on-board display device 3 requests the wireless distribution device 2 to provide information, the on-vehicle display device 3 transmits the current position information and designates an extraction range of the information. Information (track circuit information or traffic signal information) may be extracted, and data including the extracted information may be transmitted to the on-board display device 3 that is the request source.

  By applying the configuration as described above, the information delivered to the on-vehicle display device 3 can be minimized as compared with the train operation support system of the first embodiment, and the effect on real-time control can be reduced. Can be reduced.

Embodiment 3 FIG.
The track circuit is formed by dividing a track into specific sections. The distance may be several kilometers if the section is long. When a train exists in such a section, it is impossible for the ground side (the interlocking device 1 or the wireless distribution device 2) to determine where the train actually exists.

  However, as described in the second embodiment, the on-board display device 3 of each train can recognize the position of the own train by using a speed generator or GPS. Therefore, in the present embodiment, a train driving support system that notifies the driver of the state of the traffic lights before and after the own train in the on-board display device 3 of each train and also notifies the positional relationship with other surrounding trains. Disclose. The configuration of the train operation support system of the present embodiment is the same as that of the first embodiment (see FIG. 1).

  In the train operation support system according to the present embodiment, when the on-board display device 3 requests the wireless distribution device 2 to provide information, the on-board display device 3 transmits the position information of the own train as in the second embodiment. .

  When the wireless distribution device 2 receives the train position information from the on-board display device 3 of each train, the wireless distribution device 2 grasps the detailed position of the train by comparing the position information with the aggregate information received from the interlocking device 1. In this way, the wireless distribution device 2 grasps the detailed position of each train (all trains traveling in the section (track circuit) where the traffic signal controlled by the interlocking device 1 is installed). Then, with respect to the data distributed to the on-board display device 3, the range around the on-board display device 3 to which this data is distributed (a certain range centered on the train on which the on-board display device 3 of the data distribution destination is installed) Insert the location information of each train traveling in

  When the on-vehicle display device 3 receives data including information on other trains traveling around the own train, the on-board display device 3 indicates the status of the surrounding traffic lights and the position information of other trains (or the distance from other trains). To the driver. For example, with respect to the display shown in FIG. 2, a display showing the current position of each train traveling around is performed. This makes it possible to convey more detailed position information of the surrounding train to the driver.

  However, the actual train position varies depending on the transmission delay time between the wireless distribution device 2 and the on-board display device 3 and the passage of time since the on-board display device 3 last requested information provision. Therefore, the data transmitted when the on-board display device 3 requests information provision may include not only the current position of the train but also the speed information of the train. In this case, the wireless distribution device 2 appropriately calculates the current position of each train based on the train position information and speed information, and notifies the on-board display device 3 of the position information after performing the correction considering the elapsed time. it can.

  As described above, in the train operation support system of the present embodiment, the on-board display device 3 of each train transmits the position information of the own train to the wireless distribution device 2, and the wireless distribution device 2 displays the position information of each train. The detailed positions of the respective trains are gathered and the position information of the trains traveling around the trains is distributed to the on-vehicle display device 3. As a result, the on-board display device 3 can notify the driver of the positional relationship with other trains as well as the state of signals around the own train, and contribute to smooth train operation.

Embodiment 4 FIG.
In the train operation support system according to the first embodiment, the on-board display device 3 of each train is configured to notify the driver of the state of surrounding traffic lights according to the information distributed from the wireless distribution device 2 (FIG. 1). , See FIG. In contrast, in the present embodiment, a train driving support system that provides driving assistance by notifying the driver of contents different from those of the first embodiment will be described. Specifically, a train driving support system that calculates an optimum speed for smoothly operating a train and notifies the driver of the speed will be described. In addition, the structure of the train operation assistance system of this Embodiment is the same as that of Embodiment 1 (refer FIG. 1). The information distributed to the on-vehicle display device 3 by the wireless distribution device 2 is the same as that in the first embodiment.

  In the present embodiment, in the case of the on-board display device 3 in the train traveling on the track circuit A section, as shown in FIG. 4, that is, when the train is traveling on the track circuit A, D section. explain.

  In the case of FIG. 4, the track circuit on which the train traveling on the track circuit A will enter is the progress indication (G), but there is a possibility of decelerating after that. Here, when the on-board display device 3 is not installed in this train and the driver runs the train according to the actual signal, it is necessary to reduce the speed in units of track circuits as shown in FIG.

  Sudden deceleration will affect the safety of passengers in the car, and it will be a costly driving operation. Therefore, the on-vehicle display device 3 according to the present embodiment proposes a speed limit based on information (signal information or track circuit information) received from the wireless distribution device 2. Specifically, even if the current signal display is progress (G), if there is a possibility of deceleration ahead, the driver is informed of a notification that suppresses the speed in advance. Smooth operation is realized when the driver operates the train according to the notification content.

  FIG. 6 is an example in which the speed limit is specifically displayed. The dotted line is an operation curve when the vehicle is decelerated after viewing the current display immediately before the next track circuit, that is, before the traffic light (conventional operation curve when the train operation support system of this embodiment is not provided). It is. The alternate long and short dash line is based on the current state of the track circuit D (stop indication (R)) and assumes that the train is stopped immediately before entering the track circuit D, and the speed limit in the next track circuit from the current speed. In contrast, the operation curve is obtained when the vehicle decelerates linearly. The on-vehicle display device 3 according to the present embodiment notifies the driver of the average of the above two driving curves (the driving curve indicated by the solid line) as a recommended line. The parts other than the content of notification to the driver by the on-vehicle display device 3 are the same as those of the train operation support device described in the first embodiment.

  Although the case where the on-vehicle display device 3 described in the first embodiment performs the display shown in FIG. 6 has been described, the on-vehicle display device 3 described in the second and third embodiments displays the display shown in FIG. It is also possible to perform. Further, since the on-board display device 3 described in the third embodiment also acquires the position information of the preceding train, the driving curve as shown in FIG. 6 may be obtained in consideration of the current position of the preceding train. . For example, when it is detected that the preceding train is traveling near the end of the track circuit (soon to move to the next track circuit), the on-board display device 3 displays the speed suppression amount (dotted curve and solid line in FIG. 6). The operation curve indicated by the solid line is brought closer to the curve indicated by the dotted line so that the difference between the two curves decreases.

  As described above, in the train operation support system of the present embodiment, the on-board display device 3 has an optimum operation curve (recommended line) in consideration of the operation status of surrounding trains (the status of surrounding traffic signals that cannot be seen). Was calculated and notified to the driver. Thereby, smooth train travel is realizable like Embodiments 1-3.

  As described above, the train operation support system according to the present invention is useful for realizing a smooth operation of a train, and particularly, operates a train in a situation where the distance between running trains is short and acceleration / deceleration is likely to occur. Suitable for driving assistance when

1 Interlocking device 2 Wireless distribution device 3 On-vehicle display device

Claims (7)

A train operation support system for a railway system that operates a plurality of trains simultaneously,
A radio distribution device that acquires track circuit information indicating the position of the train on the track from the interlocking device, and distributes the acquired information to each running train;
Based on the track circuit information installed in each train and distributed from the wireless distribution device, the display state of the traffic lights within a certain range in the forward and backward direction of travel including the current position of the own train An on-vehicle display device to notify,
A train driving support system comprising: The on-board display device periodically makes a transmission request for information to the wireless distribution device,
The wireless distribution device, when receiving a transmission request for information from the on-vehicle display device, acquires track circuit information from the interlocking device and transmits the track circuit information to the on-vehicle display device that is the transmission request source. The train operation support system according to 1. When the wireless distribution device receives an information transmission request, the wireless distribution device acquires track circuit information for all track circuits within the control target range of the interlocking device and transmits the track circuit information to the on-vehicle display device that is the transmission request source. The train operation support system according to claim 2, wherein: The on-vehicle display device transmits the current position information of the own train when making a transmission request for information to the wireless distribution device,
The wireless distribution device, when receiving a transmission request for information from the on-board display device, selects information to be transmitted to the on-vehicle display device that is the transmission request source based on the received current position information. The train operation support system according to claim 2. The wireless distribution device, with respect to the on-board display device of the transmission request source, provides position information of a train that is traveling within a predetermined range including a current position of a train on which the on-board display device is installed. Send with circuit information,
The on-board display device notifies a driver of a display state of a traffic signal within a certain range including a current position of the own train and a positional relationship with another train traveling within the certain range. Item 5. The train operation support system according to Item 4. A train operation support system for a railway system that operates a plurality of trains simultaneously,
A radio distribution device that acquires track circuit information indicating the position of the train on the track from the interlocking device, and distributes the acquired information to each running train;
Based on the track circuit information installed in the train and distributed from the wireless distribution device, calculate the recommended driving speed of the own train in a certain forward section, and notify the driver of the calculation result,
A train driving support system comprising:   The train operation support system according to any one of claims 1 to 6, wherein in addition to the track circuit information, traffic signal information indicating a state of a traffic signal installed on a route is acquired from the interlocking device.

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