Disaster Information Notification System

Abstract

To provide a disaster information notification system capable of providing adequate information on an operation of a vehicle when a disaster occurs, thereby to secure safety in a movement of the vehicle after the disaster.SOLUTION: A disaster information notification system includes: a disaster information acquisition section for acquiring disaster information related to a disaster; a vehicle operation information acquisition section for acquiring vehicle operation information related to an operation of a vehicle; a guidance information generation section for generating guidance information related to a guidance of the vehicle based on the disaster information and the vehicle operation information; and a display control section for performing control to allow a display section mounted on the vehicle to display the guidance information in a form to enable visual recognition of a degree of the disaster, a position where the disaster occurs, and a travel direction of the vehicle.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a disaster information notification system. [Background technology]

[0002] Disaster information notification systems that notify mobile devices and other devices of disaster information related to earthquakes, fires, tsunamis, and other disasters are known and already in practical use. Disaster information notification systems that notify vehicles such as automobiles of disaster information are also being developed. For example, Patent Document 1 proposes a system that is configured to display the details of the disaster and the location where it has occurred in a navigation system that displays the vehicle's current location and direction of travel.

[0003] However, known disaster information notification systems for vehicles, including the one described in Patent Document 1, only notify the details of the disaster and its location, and do not provide sufficient information for the driver of the vehicle to determine whether or not it is okay to drive the vehicle along the route indicated by the navigation system. For this reason, there is a need for a disaster information notification system that provides more accurate information regarding vehicle operation in the event of a disaster and ensures safe travel after a disaster. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2020-88741 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention provides a disaster information notification system that can provide more accurate information regarding vehicle operation when a disaster occurs and ensure the safety of vehicle movement after a disaster occurs. [Means for solving the problem]

[0006] In order to solve the above problems, the disaster information notification system of the present disclosure is characterized by comprising a disaster information acquisition unit that acquires disaster information related to a disaster, a vehicle operation information acquisition unit that acquires vehicle operation information related to vehicle operation, a guidance information generation unit that generates guidance information related to the guidance of the vehicle based on the disaster information and the vehicle operation information, and a display control unit that controls the display of the guidance information on a display unit mounted on the vehicle in a format that allows the extent of the disaster, the location where the disaster occurred, and the direction of travel of the vehicle to be visually recognized. [Effects of the Invention]

[0007] According to the disaster information notification system of the present disclosure, it is possible to provide a disaster information notification system that can provide more accurate information regarding vehicle operation when a disaster occurs and ensure the safety of vehicle movement after a disaster. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic diagram illustrating the overall configuration of a disaster information notification system 1 according to a first embodiment. [Figure 2] 2 is a hardware configuration diagram and a functional block diagram of a control computer 12. FIG. [Figure 3] FIG. 2 is a block diagram illustrating an example of the configuration of a navigation system 15. [Figure 4] 4 is a flowchart illustrating the operation of the disaster information notification system 1 according to the first embodiment. [Figure 5] 1 shows an example of a display of driving caution information on the display of the navigation system 15. [Figure 6A] 10 is a flowchart illustrating the operation of the disaster information notification system 1 according to the second embodiment. [Figure 6B] 10 is a flowchart illustrating the operation of the disaster information notification system 1 according to the second embodiment. [Figure 7] 10 is an example of first or second guide information displayed in the disaster information notification system 1 according to the second embodiment. [Figure 8]10 is an example of first or second guide information displayed in the disaster information notification system 1 according to the second embodiment. [Figure 9] 10 is an example of first or second guide information displayed in the disaster information notification system 1 according to the second embodiment. [Figure 10A] 10 is a flowchart illustrating the operation of the disaster information notification system 1 according to the third embodiment. [Figure 10B] 10 is a flowchart illustrating the operation of the disaster information notification system 1 according to the third embodiment. [Figure 11] 13 is an example of an emergency stop screen displayed in the disaster information notification system 1 according to the third embodiment, which prompts the driver to flash hazard lights and make an emergency stop on the shoulder of the road or the like. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, the present embodiment will be described with reference to the accompanying drawings. In the accompanying drawings, functionally identical elements may be designated by the same numerals. Note that the accompanying drawings show embodiments and implementation examples according to the principles of the present disclosure, but these are for understanding the present disclosure and are not to be used to interpret the present disclosure in a limiting manner. The descriptions in this specification are merely typical examples and are not intended to limit the scope or application of the present disclosure in any way.

[0010] Although the present embodiment has been described in sufficient detail to enable those skilled in the art to implement the present disclosure, it should be understood that other implementations and forms are possible, and that changes in configuration and structure and substitutions of various elements are possible without departing from the scope and spirit of the technical ideas of the present disclosure. Therefore, the following description should not be interpreted as being limited thereto.

[0011] [First embodiment] A disaster information notification system 1 according to a first embodiment will be described with reference to Fig. 1. This disaster information notification system 1 may be composed of, for example, a data collection server 11 and a control computer 12. A large number (for example, tens of thousands to tens of millions) of vehicles 14 (passenger cars, freight vehicles, vans, special vehicles, motorcycles, etc.) that are capable of receiving radio waves from GNSS satellites 13 (artificial satellites) and equipped with navigation systems are connected to this disaster information notification system 1 via a network NW, and transmit data including vehicle operation information, etc. to the disaster information notification system 1 and receive data related to the disaster.

[0012] The vehicle 14 is equipped with a well-known navigation system 15. Although Fig. 1 shows one data collection server 11 and one control computer 12, this is merely an example, and it goes without saying that multiple units of each may be provided.

[0013] As is well known, the navigation system 15 mounted on each of the multiple vehicles 14 receives radio waves from GNSS satellites 13 using a GNSS antenna (not shown) mounted on the vehicle 14 and acquires latitude and longitude information as position information calculated from the radio waves. The navigation system 15 corrects the latitude and longitude information by comparing it with map data to generate corrected position information and displays the position of the vehicle on a map according to the corrected position information. The navigation system 15 also generates guide route information as the optimal route from the current position to the destination according to a specified destination and displays it on a map.

[0014] Vehicle operation information such as location information, recommended route information, and traveling direction acquired by the navigation system 15 installed in the vehicle 14 is transmitted to the data collection server 11 via the network NW. In addition to vehicle operation information, the data collection server 11 receives weather information (particularly related to disasters), earthquake early warnings, eruption information, road information (particularly related to disasters such as road collapses), and other disaster-related information from an external data server via the network NW. The control computer 12 generates guidance information for guiding the vehicle 14 in the event of a disaster according to the data collected by the data collection server 11, and displays it on the display of the navigation system 15. The guidance information is displayed on the display of the navigation system 15 in priority to the recommended route information generated according to the destination.

[0015] 2 is a hardware configuration diagram and a functional block diagram of the control computer 12. The control computer 12 can be configured as a general-purpose computer, and can include, for example, a CPU 101, a ROM (Read Only Memory) 102, a RAM (Random Access Memory) 103, a hard disk drive (HDD) 104, an input / output control unit 105, a communication control unit 106, a display control unit 107, an input device 108, and a display 109.

[0016] The CPU 101 is a central control unit that, together with a computer program (described later), performs various calculations and judgments necessary for the operation of this system. The ROM 102, RAM 103, and hard disk drive 104 are storage devices for storing various data and other information used during calculations and judgments in this system. The input device 108 is a device that allows an operator to input various data and commands via the input / output control unit 105, and is, for example, a keyboard, mouse, or pointing device. The communication control unit 106 is a control unit that controls communications with the data collection server 11 and other external computers. The display 109 is a display device that displays earthquake prediction results and other information. The control computer 12 can also be automatically controlled so that it operates without an operator, in which case the input device 108, display 109, etc. can be omitted.

[0017] A disaster information notification computer program for realizing this system is installed on the hard disk drive 104 or other storage device. When the disaster information notification computer program is started, it virtually realizes a disaster information acquisition unit 111, a vehicle operation information acquisition unit 112, and a guidance information generation unit 113 in the control computer 12. The disaster information notification computer program may be stored in a portable storage medium such as a CD-ROM or a memory card.

[0018] The disaster information acquisition unit 111 acquires weather information (particularly disaster-related information), earthquake early warnings, road information (particularly disaster-related information such as road collapses), and other disaster-related information from, for example, an external computer, etc., via the network NW and the communication control unit 106. The vehicle operation information acquisition unit 112 acquires vehicle operation information related to the operation status of the vehicle 14 (route information, driving history, current position, speed, steering, braking, etc.) from the vehicle 14 via the network NW and the communication control unit 106. The guidance information generation unit 113 generates guidance information related to the guidance of the vehicle 14 according to the disaster information and vehicle operation information.

[0019] An example of the configuration of the navigation system 15 will be described with reference to Fig. 3. The navigation system 15 may be configured to include, for example, a control unit 121, a GNSS antenna 122, a gyro / acceleration sensor 123, a vehicle position estimation unit 124, a map information storage unit 125, a communication control unit 126, a route information generation unit 127, a disaster evacuation guidance information generation unit 128, an input / output control unit 129, a display control unit 130, and a display 131.

[0020] The control unit 121 controls the overall operation of the navigation system 15. The GNSS antenna 122 receives radio waves from the GNSS satellites 13. The gyro / acceleration sensor 123 is a sensor that measures the acceleration and angular velocity of the vehicle 14. The vehicle position estimation unit 124 estimates the current position of the vehicle 14 according to a signal corresponding to the radio waves received by the GNSS antenna 122 and a detection signal from the gyro / acceleration sensor 123.

[0021] The map information storage unit 125 is a storage device that stores a map of the area in which the vehicle 14 travels, information about various facilities in the area, and information about road regulations, etc. The information stored in the map information storage unit 125 can be updated as needed by a data server (not shown) via the network NW. The route information generation unit 127 generates information about a guidance route for when the vehicle 14 travels toward the destination, based on the input destination location, current location, etc. The disaster guidance information generation unit 128 processes the guidance information generated by the guidance information generation unit 113 and generates disaster guidance information according to the current location, etc. of the vehicle 14.

[0022] The input / output control unit 129 controls input operations from an input device for inputting various information required for navigation by the driver of the vehicle 14. The display control unit 130 controls various displays on the display 131, including the display of disaster guidance information.

[0023] Next, the operation of the disaster information notification system 1 according to the first embodiment will be described with reference to the flowchart in Fig. 4. Here, an example will be described in which an earthquake occurs as an example of a disaster and an earthquake early warning is received as disaster information, but the basic processing procedure is the same for other disasters.

[0024] When a vehicle 14 is traveling at a predetermined speed V (>0) (Y in step S11), if a disaster (earthquake) occurs in an area related to the area in which the vehicle 14 is traveling (step S12) and the data collection server 11 receives a corresponding emergency earthquake alert (Y in step S13), the data collection server 11 acquires vehicle operation information from vehicles 14 traveling in an area related to the earthquake (for example, within a 100 km radius of the point of maximum seismic intensity) (step S14).

[0025] The guidance information generating unit 113 of the control computer 12 displays the magnitude of seismic intensity and the risk of tsunami in different colors on a map according to the seismic intensity distribution and tsunami information indicated in the Earthquake Early Warning (step S15). Then, it is determined whether the area determined to be a risk area based on this color-coded display matches the current position information, traveling direction, or guided route information indicated by the vehicle 14, and if they match, driving caution information is displayed on the display of the navigation system 15 together with the color-coded map to alert the driver (step S16).

[0026] 5 shows an example of the display of driving caution information on the display of the navigation system 15. In this illustrated example, only the seismic intensity of the earthquake is displayed in a different color, but if there is tsunami information and the recommended route is in an area that may be affected by a tsunami (for example, a road along the coastline), the degree of risk of the tsunami can also be displayed in a different color.

[0027] In the example of FIG. 5, map information showing the magnitude and location of the earthquake by displaying the seismic intensity distribution in a color-coded manner, and route guidance information (the direction of travel of the vehicle 14) from the navigation system 15 are displayed overlapping in a visually recognizable format. By displaying the seismic intensity in a color-coded manner, the driver of the vehicle 14 can visually clearly understand that his or her vehicle 14 is heading toward an earthquake-hit area and the degree of danger. Based on this understanding, the driver can accurately determine whether or not to discontinue traveling to the destination. Therefore, the disaster information notification system 1 of this embodiment can provide more accurate information regarding vehicle operation when a disaster occurs, and ensure the safety of vehicle movement after a disaster.

[0028] [Second embodiment] A disaster information notification system 1 according to a second embodiment will be described with reference to Figures 6A and 6B. The hardware configuration of the disaster information notification system 1 according to the second embodiment is the same as that according to the first embodiment (Figures 1 to 3), so a duplicated description will be omitted below. This second embodiment differs from the first embodiment in the generation and display of driving caution information when disaster information is obtained.

[0029] The operation of the disaster information notification system 1 according to the second embodiment will be described with reference to the flowcharts of Figures 6A and 6B. As in the first embodiment, the case where an emergency earthquake warning is received as disaster information will be described as an example.

[0030] Steps S11 to S14 are the same as the operations in the first embodiment. In step S14, vehicle operation information is acquired by the vehicle operation information acquisition unit 112. The vehicle operation information includes information on whether the vehicle 14 is traveling on a specific road, such as an expressway, a motorway, an overpass, a specific coastal road, or a road in a specific mountainous region. The guidance information generation unit 113 determines whether the target vehicle 14 is traveling on a specific road according to the vehicle operation information (step S21). The specific road may preferably be defined in the map information storage unit 125 or the like, but the information on the specific road may be received from the vehicle 14 as appropriate, or from another server or the like.

[0031] In step S21, if it is determined that the target vehicle 14 is not traveling on a specific road (N), the seismic intensity is not displayed in a color-coded manner, and driving caution information indicating only that an earthquake has occurred is simply displayed on the display of the navigation system 15. When traveling on a normal public road, the driver can take more flexible measures according to the disaster situation than when traveling on a specific road. For this reason, when not traveling on a specific road, driving caution information indicating only that an earthquake has occurred is not presented, and driving caution information indicating the seismic intensity distribution in a color-coded manner, etc. is not displayed. In this way, by displaying driving caution information according to the situation, it becomes easier for the driver to take more appropriate measures.

[0032] If it is determined in step S21 that the target vehicle 14 is traveling on a specific road (Y), the direction of the destination where the vehicle 14 is scheduled to travel is determined according to the change in vehicle position information included in the vehicle operation information and the direction of the specific road (step S22).Then, the guidance information generating unit 113 of the control computer 12 displays the magnitude of the seismic intensity and the tsunami risk on a map in different colors according to the seismic intensity distribution and tsunami information indicated in the Earthquake Early Warning (step S15).

[0033] Next, the guidance information generator 113 determines whether the traveling direction of the vehicle 14 is a direction approaching the disaster (earthquake) occurrence site, based on the received vehicle operation information (step S23). If it is determined that the traveling direction is an approaching direction (Y), the presence or absence of traffic congestion on the specific road ahead of the vehicle 14 is determined based on, for example, vehicle speed information measured by the gyro / acceleration sensor 123 or other on-board sensors (step S24). If it is determined that there is traffic congestion (Y), the guidance information generator 113 determines whether an emergency avoidance operation is being performed by another vehicle ahead of the vehicle, based on the vehicle speed and steering information of the other vehicle ahead of the vehicle (a preceding vehicle) (step S25). An emergency avoidance operation is an operation of the vehicle that is urgently performed to avoid an accident due to road damage caused by an earthquake, the falling of a load, or the overturning, collision, or breakdown of another vehicle, and includes, for example, sudden steering, sudden braking, activation of an ABS (antilock brake system), etc.

[0034] If the determination in step S24 or step S25 is negative (N), the process proceeds to step S26A, where the first guide information is displayed. On the other hand, if the determination in both steps S24 and S25 is positive, the process proceeds to step S26B, where the second guide information is displayed. The second guide information is information that is presented when the urgency is higher than that of the first guide information.

[0035] The first guidance information is displayed when the situation ahead on the specific road on which the vehicle is traveling is not currently serious, with no traffic congestion or emergency avoidance required, but it is determined that the vehicle should depart from the specific road in light of the disaster situation. For example, if an earthquake occurs and it is determined that the vehicle's destination is approaching the epicenter, the first guidance information will display a recommendation to exit at the next interchange, stop at the next service area or parking area, or make an emergency stop on the shoulder of the road. For example, the first guidance information may be displayed with a yellow background to indicate that it is emergency guidance information. If a tsunami occurs and there is concern that the tsunami will reach the coastal road on which the vehicle is traveling, information recommending that the vehicle detour away from the coastal road and take a road heading inland will be displayed. In addition, in the event of a volcanic eruption, if volcanic smoke or other debris is expected to arrive at the destination due to wind direction or other factors, information recommending that the vehicle stop traveling in that direction will be displayed.

[0036] The second guidance information is displayed when a high level of urgency is recognized, such as when a traffic jam has already occurred on the specific road ahead of the vehicle and a preceding vehicle has been identified that is taking emergency avoidance action, and it is determined that the vehicle should immediately leave the specific road. The second guidance information may display a strong recommendation to get off immediately at the next interchange, stop at the next service area or parking area, or make an emergency stop on the shoulder of the road, etc. In addition, the guidance information may be displayed with a red background to indicate a higher level of urgency.

[0037] When the second guidance information is presented, information corresponding to the second guidance information is automatically communicated to the company or organization (expressway management company, etc.) that manages the specific road (expressway) and the administrative agency (prefectural office, city hall, etc.) that manages the specific road (expressway) (step S27). After that, it is determined whether or not there is any follow-up notification regarding the specific road that the vehicle is traveling on, and if there is no notification, the process ends. If a follow-up notification is received, the process returns to step S24, and the above operations are repeated.

[0038] In the flowchart of FIG. 6B, the second guide information is displayed when the determinations in both steps S24 and S25 are affirmative (Y). Alternatively, the second guide information may be displayed even when only one of steps S24 and S25 is affirmative.

[0039] FIG. 7 shows an example of a screen displayed on the display of the navigation system 15 as first or second emergency information when an earthquake occurs. This screen displays the status of the guided route and recommended countermeasures along with a color-coded map and the guided route. In the case of second emergency information, which has a high level of urgency, the background is red, indicating a high level of urgency. In the case of first emergency information, which has a relatively low level of urgency, the background is yellow. When second emergency information is displayed, the screen may also flash or an alarm may be sounded to clearly indicate the level of urgency.

[0040] 8 shows an example of a screen that is displayed on the display of the navigation system 15 as first or second emergency information when a fire breaks out on the planned guided route. This screen displays, together with a color-coded map, information that a fire has broken out on the guided route, the status of the fire, and recommended measures to take (whether to follow the guided route or change and take a detour, etc.).

[0041] 9 shows an example of a screen that is displayed on the display of the navigation system 15 as first or second emergency information when there is a concern about the arrival of a tsunami on a coastal road that is the recommended route to be driven. This screen displays, together with a color-coded map, information that there is a risk of a tsunami on the recommended route, the status of the tsunami and earthquake, and recommended measures to take (whether to follow the recommended route, change to a detour, get out of the vehicle and evacuate to higher ground on foot, etc.).

[0042] The disaster information notification system 1 of the second embodiment can achieve the same effects as the first embodiment. In addition, the disaster information notification system 1 of the second embodiment determines whether the vehicle 14 is traveling on a specific road, including an expressway, and presents different disaster information (first / second guidance information, driving caution information) according to the determination result, so that the driver of the vehicle 14 can obtain more appropriate information according to the situation.

[0043] Furthermore, when it is determined that the vehicle is traveling on a specific road, information about the destination is acquired by an on-board sensor of another vehicle traveling in the destination. In other words, in this second embodiment, the other vehicle can function as a measuring device (probe) for detecting a disaster.

[0044] [Third embodiment] A disaster information notification system 1 according to a third embodiment will be described with reference to Figures 10A and 10B. The hardware configuration of the disaster information notification system 1 according to the third embodiment is the same as that according to the first embodiment (Figures 1 to 3), so a duplicated description will be omitted below. This third embodiment differs from the first embodiment in the generation and display of driving caution information when disaster information is obtained.

[0045] The operation of the disaster information notification system 1 according to the third embodiment will be described with reference to the flowcharts of Figures 10A and 10B. As in the third embodiment, the description will be given here taking as an example a case where an emergency earthquake warning is received as disaster information.

[0046] Steps S11 to S22 are the same as those in the second embodiment. In step S22, once the destination of the target vehicle 14 is determined, the guidance information generator 113 determines whether the area in which the vehicle 14 is traveling is experiencing a predetermined disaster (e.g., an earthquake of seismic intensity 3 or higher). If the determination is affirmative (Y), the guidance information generator 113 generates an emergency stop screen, as shown in FIG. 11, that flashes hazard lights and requests the vehicle to make an emergency stop on the shoulder of the road or the like, and displays the screen on the display of the navigation system 15 (step S32). In addition to or instead of flashing hazard lights, the vehicle may honk its horn or flash its brake lights to warn other vehicles traveling around the target vehicle to exercise caution (any type of display, such as flashing hazard lights, honking its horn, flashing brake lights, or other display that notifies other surrounding vehicles of an emergency, is acceptable). Displaying such an emergency stop screen allows vehicles traveling on a specific road to mutually notify each other of the occurrence of a disaster (e.g., an earthquake), thereby preventing secondary disasters from occurring.

[0047] When it is confirmed that surrounding vehicles have stopped temporarily (step S33), the driver of vehicle 14 stops his / her vehicle on the shoulder of the road or the like to ensure the safety of his / her vehicle 14 (step S34). As described above, in addition to the information displayed in the second embodiment, the third embodiment displays an emergency stop screen, which further assists the driver in making accurate decisions in addition to the above-mentioned embodiments.

[0048] The operations from step S15 onward in Fig. 10B are substantially the same as those in the second embodiment. However, in Fig. 10B, in addition to displaying the second guide information, the third guide information is also presented as necessary. While the second guide information is based on the situation at the destination, the third guide information is based on the situation in the area where the target vehicle is currently located. For example, when the target vehicle is approaching an overpass or has reached a building that is at risk of collapse, such as a high-rise building, guidance information for avoiding these can be displayed as the third guide information.

[0049] As described above, the disaster information notification system 1 of the third embodiment can provide the same effects as the above-described embodiments. In addition, the disaster information notification system 1 of the third embodiment displays emergency stop information according to the situation in the area in which the vehicle 14 is traveling, allowing the driver of the vehicle 14 to take appropriate measures according to the situation.

[0050] The present invention is not limited to the above-described embodiments and includes various modifications. For example, the above-described embodiments have been described in detail to clearly explain the present invention, and the present invention is not necessarily limited to those including all of the described configurations. Furthermore, it is possible to replace part of the configuration of one embodiment with the configuration of another embodiment, or to add the configuration of another embodiment to the configuration of one embodiment. Furthermore, it is possible to add, delete, or replace part of the configuration of each embodiment with other configurations. [Explanation of symbols]

[0051] 11...data collection server, 12...control computer, 13...GNSS satellite (artificial satellite), 14...vehicle, 15...navigation system, NW...network, 101...CPU, 102...ROM (Read Only Memory), 103...RAM (Random Access Memory), 104...Hard Disk Drive (HDD), 105...Input / Output Control Unit, 106...Communication Control Unit, 107...Display Control Unit, 108...Input Device, 109...Display, 111...Disaster Information Acquisition Unit, 112...Vehicle Operation Information Acquisition Unit, 113...Guidance Information Generation Unit, 121...Control Unit, 122...GNSS Antenna, 123...Gyro / Acceleration Sensor, 124...Vehicle Position Estimation Unit, 125...Map Information Storage Unit, 126...Communication Control Unit, 127...Route Information Generation Unit, 128...Disaster Guidance Information Generation Unit, 129...Input / Output Control Unit, 130...Display Control Unit, 131...Display.

Claims

1. a disaster information acquisition unit that acquires disaster information related to a disaster; a vehicle operation information acquisition unit that acquires vehicle operation information related to vehicle operation; a guidance information generating unit that generates guidance information related to guidance of the vehicle based on the disaster information and the vehicle operation information; a display control unit that controls the display of the guidance information on a display unit mounted on the vehicle in a format that allows the extent of the disaster, the location where the disaster has occurred, and the traveling direction of the vehicle to be visually recognized; Equipped with the vehicle operation information acquisition unit acquires information regarding whether the vehicle is traveling on a specific road, such as an expressway, a motorway, an overpass, a predetermined coastal road, or a road in a predetermined mountainous region; the guidance information generation unit generates guidance information for guiding the vehicle to leave the specific road based on the disaster information when it is determined that the vehicle is traveling on the specific road; the guidance information generation unit determines whether a traffic jam has occurred on the specific road at a destination where the vehicle is scheduled to travel, or whether an emergency avoidance operation has been performed by a preceding vehicle at the destination; If the determination is negative, first guide information is generated, and if the determination is positive, second guide information having a higher urgency than the first guide information is generated. Disaster information notification system.

2. 2. The disaster information notification system according to claim 1, wherein the guidance information generation unit determines whether a predetermined disaster has occurred in an area in which the vehicle is traveling, and if the determination is affirmative, generates emergency stop information for the vehicle.

3. The disaster information notification system according to claim 2 , wherein the emergency stop information includes a message urging the driver to be careful of other vehicles traveling around the vehicle.

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