Traffic information generating system, traffic information generating device, and traffic information generating method

Abstract

This traffic information generation system comprises a traffic information generation means for generating, as an image, information about traffic on a road for a prescribed period, and a notification acquisition means for acquiring a notification indicating the period of occurrence of a disaster in the vicinity of the road. The traffic information generation means uses a first generation process to generate the traffic information for a period from which the time of occurrence has been excluded from the prescribed period, and uses a second generation process different from the first generation process to generate the traffic information for the period of occurrence during the prescribed period.

Description

[Technical Field]

[0001] The present invention relates to a traffic information generating system relating to a technology for acquiring traffic information as an image, for example. [Background technology]

[0002] In recent years, studies have been conducted to further enhance traffic control using traffic lights and other devices that issue instructions to vehicles on roads. For example, this enhancement involves using traffic information acquired by imaging devices attached to roadside equipment such as traffic lights to support vehicle instructions and cooperation between traffic lights. Patent Document 1 discloses a technology for correcting image shake in such imaging devices. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2018 / 159145 Summary of the Invention [Problem to be solved by the invention]

[0004] When an image capturing device is attached to a facility on a road as described above, if a disaster such as an earthquake occurs, the image capturing device will vibrate, and there is a risk that appropriate traffic information will not be obtained from the image capturing device.

[0005] In view of the above-mentioned problems, an object of the present invention is to obtain appropriate traffic information even when a disaster occurs. [Means for solving the problem]

[0006] The traffic information generating system of the present invention comprises: traffic information generating means for generating road traffic information for a predetermined period as an image; a notification acquisition means for acquiring a notification indicating the time of occurrence of a disaster in the vicinity of the road; The traffic information generating means generating the traffic information for a period excluding the occurrence time within the predetermined period in a first generation process; The traffic information for the occurrence time within the predetermined period is generated by a second generation process that is different from the first generation process.

[0007] The traffic information generating device of the present invention comprises: traffic information generating means for generating road traffic information for a predetermined period as an image; a notification acquisition means for acquiring a notification indicating the time of occurrence of a disaster in the vicinity of the road; The traffic information generating means generating the traffic information for a period excluding the occurrence time within the predetermined period in a first generation process; The traffic information for the occurrence time within the predetermined period is generated by a second generation process that is different from the first generation process.

[0008] The traffic information generating method of the present invention further comprises: Taking images of the road for a predetermined period of time, Obtaining a notification indicating when a disaster will occur in the vicinity of the road; generating, as first traffic information, an image for a period excluding the occurrence time within the predetermined period, in a first generation process; An image at the time of occurrence within the predetermined period is generated as second traffic information by a second generation process different from the first generation process. [Effects of the Invention]

[0009] According to the present invention, even in the event of a disaster, it is possible to obtain appropriate traffic information. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a block diagram showing an example of the configuration of a communication system according to a first embodiment of the present invention. [Figure 2] 4 is a flowchart showing an example of the operation of the communication system according to the first embodiment of the present invention. [Figure 3] FIG. 10 is a block diagram showing an example of the configuration of a communication system according to a second embodiment of the present invention. [Figure 4] 10 is a flowchart showing an example of the operation of a communication system according to a second exemplary embodiment of the present invention. [Figure 5] FIG. 1 is a diagram illustrating an example of an information processing device that realizes a traffic information generating system and the like according to first and second embodiments of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] First Embodiment A traffic information generating system 1 in the first embodiment will be described with reference to Fig. 1 and Fig. 2. Fig. 1 is a block diagram showing an example of the configuration of the traffic information generating system 1. Fig. 2 is a flowchart for explaining an example of the operation of the traffic information generating system 1.

[0012] The configuration of the traffic information generation system 1 will be described. The traffic information generation system 1 includes a first server 20, a second server 30, and a third server 40. The first server 20 includes a notification acquisition means 11 and a traffic information generation means 12. The second server 30 includes a traffic information acquisition means 13 and an instruction means 14. The third server 40 is connected to an imaging means 15. A control means 16 included in the third server 40 controls the imaging means 15 and acquires images captured by the imaging means 15. The third server 40 is installed, for example, in a predetermined section of a road or at an intersection, and is the most downstream server among the first to third servers 20, 30, and 40. The second server 30 is installed in a facility such as a police station or a hospital, and is the midstream server among the first to third servers 20, 30, and 40. The first server 10 is installed in a city hall or a ward office, and is the most upstream server among the first to third servers 20, 30, and 40.

[0013] In this way, the instruction means 14 and the traffic information generating means 12 are provided in different servers. Note that the notification acquiring means 11, the traffic information generating means 12, the traffic information acquiring means 13, the instruction means 14, and the imaging means 15 may be provided in one traffic information generating device. The first server 20, the second server 30, and the third server 40 are provided with communication means (not shown) and are capable of communicating with each other.

[0014] The notification acquisition means 11 acquires notifications indicating the occurrence of a disaster near the road. The notification acquisition means 11 monitors external information media, such as the Japan Meteorological Agency's website. The notification acquisition means 11 also pre-stores location information corresponding to road locations. When the occurrence of a disaster near the road is published in the external information media, the notification acquisition means 11 acquires a notification indicating the occurrence. The term "on the road" refers to the roadside or roadside, including, for example, a highway, a road at an intersection, or a sidewalk. A disaster refers to damage to human life and social life caused by abnormal natural phenomena or man-made causes. Article 2 of the Disaster Countermeasures Basic Act provides specific examples of disasters, including "damage caused by storms, tornadoes, heavy rain, heavy snowfall, floods, landslides, mudslides, storm surges, earthquakes, tsunamis, volcanic eruptions, landslides, and other abnormal natural phenomena, or large-scale fires or explosions, or other causes similar to these in terms of the extent of the damage they cause, as specified by government ordinance." Of these, disasters in this invention are those that cause vibrations to imaging means attached to road equipment such as traffic lights (for example, strong winds (including those accompanied by typhoons, etc.), heavy rain, heavy snow, earthquakes, tsunamis, volcanic eruptions, landslides, explosions).

[0015] For example, the road is a part of a road laid in City A. When a disaster occurs in City A, the external information medium publishes information about the occurrence of the disaster and the time of occurrence of the disaster. The notification acquisition means 11 accesses the external information medium and acquires a notification indicating the time of occurrence of the disaster in City A. The notification acquisition means 11 may also acquire whether or not a disaster has occurred.

[0016] The traffic information generating means 12 generates traffic information on roads for a predetermined period of time as images. Specifically, the traffic information generating means 12 acquires images of roads captured for a predetermined period of time and generates traffic information from the images. Here, the configuration for acquiring images of roads captured for a predetermined period of time includes a configuration in which the traffic information generating means 12 acquires images by capturing images of the roads, and a configuration in which the imaging means 15 acquires images. The configuration in which the traffic information generating means 12 captures images of the roads includes a configuration in which the traffic information generating means 12 controls the imaging means 15 provided in the third server 40 to capture images of the roads.

[0017] The predetermined period is, for example, 10 minutes or 1 hour, but is not limited to these. Here, traffic information in this application is defined as information including captured images of people, bicycles, automobiles, etc. traveling on the road. In addition to the above-mentioned images, traffic information in this application may also include location information corresponding to locations on the road. The imaging means 15 is assumed to be installed so as to be able to capture images of roads such as roadways and sidewalks. Note that the traffic information generating means 12 may have the function of the imaging means 15, and the traffic information generating means 12 may capture images of the road instead of the imaging means 15. Note that traffic information may be video or still images.

[0018] The traffic information generated by the traffic information generating means 12 is, for example, an image of a roadway. The traffic information generating means 12 processes the image captured by the imaging means 15, such as by blur correction and color correction, to generate the traffic information. The traffic information generating means 12 may use the image captured by the imaging means 15 as the traffic information without processing it. By checking the traffic information in the form of an image, the user can identify traffic conditions such as the number of vehicles on the road and the vehicle speed. The traffic information may also be output to the instruction means 14, which will be described later, and used for traffic control.

[0019] The traffic information generating means 12 generates traffic information for a period during which road images are captured, excluding the time when a disaster occurs, using a first generation process described below. Furthermore, the traffic information generating means 12 generates traffic information for the time when a disaster occurs, using a second generation process (described below) that is different from the first generation process, during the predetermined period during which road images are captured. In this way, the traffic information generating means 12 can generate traffic information for the time when no disaster occurs and traffic information for the time when a disaster occurs, using different generation processes. Note that the information generated by the first generation process corresponds to the first traffic information. Also, the information generated by the second generation process corresponds to the second traffic information.

[0020] Specific examples of the first generation process and the second generation process are described below. In the first example, the first generation process is a process in which the image of the road acquired by the traffic information generating means 12 is not corrected based on a notification indicating the time of the disaster, and the image is generated as traffic information. The second generation process is a process in which the image of the road acquired by the traffic information generating means 12 is corrected based on a notification indicating the time of the disaster, and the image is generated as traffic information.

[0021] Correction based on a notification indicating the time of disaster occurrence includes, for example, correcting shaking and noise in a video. For example, when an earthquake occurs, vehicles and people on the road are shaken by the earthquake when they are captured. Therefore, the traffic information generating means 12 detects the occurrence of an earthquake from the notification indicating the time of disaster occurrence (here, the notification indicating the time of earthquake occurrence) and corrects the image according to the earthquake shaking. The notification indicating the time of disaster occurrence may include the earthquake's seismic intensity, etc. In this case, the traffic information generating means 12 may correct the image according to the seismic intensity. On the other hand, the traffic information generating means 12 generates traffic information (images) without making corrections based on the notification indicating the time of disaster occurrence (here, the notification indicating the time of earthquake occurrence) during periods other than the time of earthquake occurrence. Here, the configuration of generating traffic information without making corrections based on the notification indicating the time of disaster occurrence may be either a configuration in which the acquired image is generated as traffic information as is, or a configuration in which the acquired image is corrected without making corrections based on the notification indicating the time of disaster occurrence, and then generated as traffic information.

[0022] Next, a second and a third example will be described. In the second example, the traffic information generating means 12 has the function of the imaging means 15, and the traffic information generating means 12 captures images of the road surface for a predetermined period of time, but this is not limiting. In this case, the traffic information generating means 12 may use different servers to capture images of the road surface and generate traffic information. Specifically, the traffic information generating means 12 captures images of the road surface using the third server 40, and generates traffic information using the first server 20.

[0023] In the second example, the first generation process is a process in which the traffic information generating means 12 generates, as traffic information, images of the road surface captured at a first frame rate. The first frame rate is, for example, 30 fps. The second generation process is a process in which the traffic information generating means 12 generates, as traffic information, images of the road surface captured at a second frame rate higher than the first frame rate. The second frame rate is, for example, 50 fps or 60 fps.

[0024] Images taken at the time of the occurrence of a disaster are adversely affected by earthquake shaking. Therefore, it may be difficult for a user to understand traffic conditions such as the number of vehicles on the road and their speed from images taken at the time of the occurrence of a disaster. In the traffic information generating means 12, images generated at the time of the occurrence of a disaster are taken at a second frame rate higher than the first frame rate, so that more information can be provided to the user.

[0025] Therefore, the traffic information generating means 12 allows the user to more accurately identify traffic conditions such as the number of vehicles on the road and their speeds, even from traffic information generated at the time of a disaster. Furthermore, when the instruction means 14 described below performs traffic control based on the traffic information, the instruction means 14 can perform more appropriate traffic control even at the time of a disaster.

[0026] Note that the first generation process and the second generation process may use different shutter speeds for capturing images instead of different frame rates. Specifically, the second generation process captures images of the road at a second shutter speed that is faster than the first shutter speed used in the first generation process. Images generated at the time of the disaster are captured at the second shutter speed that is faster than the first shutter speed, which is expected to reduce image blur caused by earthquake shaking in the images provided to users.

[0027] The first generation process and the second generation process may differ in gain during image capture in addition to the frame rate or shutter speed. Specifically, the second generation process captures an image of the road at a second gain that is higher than the first gain used in the first generation process. Specifically, the gain refers to the amplification factor of the electrical signal returned from the light received by the image sensor used for image capture.

[0028] Therefore, the traffic information generating means 12 allows the user to more accurately identify traffic conditions such as the number of vehicles on the road and their speeds, even from traffic information generated at the time of a disaster. Furthermore, when the instruction means 14 described below performs traffic control based on the traffic information, the instruction means 14 can perform more appropriate traffic control even at the time of a disaster.

[0029] The traffic information acquisition means 13 acquires the traffic information generated by the traffic information generation means 12. The traffic information acquisition means 13 is a communication means capable of communicating with the first server 20 and the third server 40. The traffic information acquisition means 13 acquires the traffic information generated by the traffic information generation means 12 by communicating with the first server 20.

[0030] The instruction means 14 issues instructions to at least one of vehicles and people on the road based on the traffic information acquired by the traffic information acquisition means 13. An instruction refers to traffic control such as controlling traffic signals. For example, the instruction means 14 determines whether the number of vehicles traveling in a specific direction exceeds a threshold based on the traffic information generated by the traffic information generation means 12. If the number of vehicles exceeds the threshold, the instruction means 14 controls a traffic light that issues instructions to vehicles traveling in that direction to extend the time it issues a pass instruction. This causes the traffic light to extend the time it displays a green light. On the other hand, if the number of vehicles exceeds the threshold, the instruction means 14 does not control the traffic light to change the time it issues an instruction.

[0031] The instruction means 14 issues the above-mentioned instructions based on the traffic information generated by the first generation process during the predetermined period in which the road surface is imaged, excluding the time when a disaster occurs. Also, the instruction means 14 issues the above-mentioned instructions based on the traffic information generated by the second generation process during the predetermined period in which the road surface is imaged, excluding the time when a disaster occurs. Therefore, the instruction means 14 can issue appropriate instructions even when a disaster occurs, for example, by using images with a higher frame rate.

[0032] Next, an example of the operation of the traffic information generating system 1 will be described with reference to Fig. 2. The notification acquiring means 11 acquires a notification indicating the time of occurrence of a disaster (S101). The traffic information generating means 12 generates traffic information for a period of a predetermined period excluding the time of occurrence in a first generating process (S102). The traffic information generating means 12 generates traffic information for the time of occurrence in a predetermined period in a second generating process (S103). Note that the first generating process in S102 and the second generating process in S103 may be performed according to any of the first, second, and third examples described above.

[0033] The traffic information acquisition means 13 acquires traffic information (S104). The instruction means 14 issues instructions based on the traffic information (S105). Specifically, the instruction means 14 issues instructions based on the traffic information generated in the first generation process during a period excluding the time when a disaster occurs during the predetermined period. Furthermore, the instruction means 14 issues instructions based on the traffic information generated in the second generation process during the time when a disaster occurs during the predetermined period. Note that the processes of S102 and S103 do not need to be performed consecutively, and a configuration may be adopted in which the processes excluding S102 are performed when a disaster occurs, and the processes excluding S103 are performed when a disaster does not occur.

[0034] As described above, the traffic information generation system 1 includes traffic information generation means 12 and notification acquisition means 11. The traffic information generation means 12 generates traffic information on roads for a predetermined period of time as an image. The notification acquisition means 11 acquires a notification indicating the time of occurrence of a disaster in the vicinity of the road. The traffic information generation means 12 generates traffic information for a period of the predetermined period excluding the time of occurrence by a first generation process. The traffic information generation means 12 also generates traffic information for the time of occurrence by a second generation process different from the first generation process.

[0035] In the traffic information generation system 1, the second generation process for generating traffic information for the time of occurrence of a disaster is different from the first generation process for generating traffic information for a period excluding the time of occurrence of a disaster. Therefore, in the second generation process, the traffic information generating means 12 can perform processing appropriate for the occurrence of a disaster. Therefore, by the second generation process, the traffic information generation system 1 can generate traffic information that has been processed appropriately for a disaster. The processing appropriate for a disaster is, for example, at least one of correcting the image, capturing images at a higher frame rate, and capturing images at a higher gain.

[0036] <Second embodiment> The traffic information generating system 2 in the second embodiment will be described with reference to Fig. 3 and Fig. 4. Fig. 3 is a block diagram showing an example of the configuration of the traffic information generating system 2. Fig. 4 is a flowchart for explaining an example of the operation of the traffic information generating system 2.

[0037] The following describes the configuration of the traffic information generation system 2. As shown in Fig. 3, the traffic information generation system 2 includes a notification acquisition means 11 and a traffic information generation means 12. Although the notification acquisition means 11 and the traffic information generation means 12 are integrally provided in Fig. 3, they may be separate entities.

[0038] The notification acquisition means 11 acquires a notification indicating the occurrence time of a disaster in the vicinity of a road. The notification acquisition means 11 in this embodiment may have the same functions and connection relationships as the notification acquisition means 11 in the first embodiment.

[0039] The traffic information generating means 12 generates road traffic information for a predetermined period as an image. Specifically, the traffic information generating means 12 generates road traffic information for a period of the predetermined period excluding the time when a disaster occurs, by a first generation process. Furthermore, the traffic information generating means 12 generates road traffic information for the time when a disaster occurs, by a second generation process different from the first generation process. The traffic information generating means 12 in this embodiment may have the same functions and connections as the traffic information generating means 12 in the first embodiment.

[0040] Next, a traffic information generating method by the traffic information generating system 2 will be described with reference to Fig. 4. The notification acquiring means 11 acquires a notification indicating the time of occurrence of a disaster in the vicinity of a road (S201). The traffic information generating means 12 generates traffic information for a period of a predetermined period excluding the time of occurrence of the disaster by a first generating process (S202). The traffic information generating means 12 generates traffic information for the time of occurrence of the disaster by a second generating process different from the first generating process (S203).

[0041] As described above, in the traffic information generation system 2, the second generation process for generating traffic information for the time of disaster occurrence differs from the first generation process for generating traffic information for a period excluding the time of disaster occurrence. Therefore, in the second generation process, the traffic information generating means 12 can perform processing appropriate for the occurrence of a disaster. Therefore, by the second generation process, the traffic information generation system 2 can generate traffic information that has been processed appropriately for the disaster. The processing appropriate for the disaster is, for example, at least one of correcting the image, capturing images at a higher frame rate, and capturing images at a higher gain.

[0042] Furthermore, some or all of the components of each device or system are realized by any combination of an information processing device 2000 and a program as shown in Fig. 5. Fig. 5 is a diagram showing an example of an information processing device that realizes the traffic information generation systems 1, 2, etc. The information processing device 2000 includes, as an example, the following configuration.

[0043] ·CPU(Central Processing Unit)2001 ROM (Read Only Memory) 2002 ·RAM(Random Access Memory)2003 Program 2004 loaded into RAM 2003 A storage device 2005 for storing a program 2004 A drive device 2007 that reads and writes the recording medium 2006 ·Communication interface 2008 connecting to communication network 2009 Input / output interface for data input / output 2010 Bus 2011 connecting each component Each component of each device in each embodiment is realized by the CPU 2001 acquiring and executing a program 2004 that realizes the function of that component. The program 2004 that realizes the function of each component of each device is stored in advance in, for example, the storage device 2005 or the RAM 2003, and is read out by the CPU 2001 as needed. The program 2004 may be supplied to the CPU 2001 via the communication network 2009, or may be stored in advance in the recording medium 2006, and the drive device 2007 may read out the program and supply it to the CPU 2001.

[0044] There are various variations in the method of realizing each device. For example, each device may be realized by any combination of a separate information processing device 2000 and a program for each component. Furthermore, multiple components included in each device may be realized by any combination of a single information processing device 2000 and a program.

[0045] In addition, some or all of the components of each device may be realized by general-purpose or dedicated circuits including a processor, etc., or a combination of these. These may be configured by a single chip, or by multiple chips connected via a bus. Some or all of the components of each device may be realized by a combination of the above-mentioned circuits, etc., and a program.

[0046] When some or all of the components of each device are realized by multiple information processing devices, circuits, etc., the multiple information processing devices, circuits, etc. may be centrally or decentralized. For example, the information processing devices, circuits, etc. may be realized as a client-server system, a cloud computing system, or the like, in a form in which each device is connected via a communication network.

[0047] Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above embodiments. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention. [Explanation of symbols]

[0048] 1, 2 Traffic information generation system 11 Means of obtaining notifications 12 Traffic information generation means 13 Means of obtaining traffic information 14 Instruction means 15 Imaging means 16 Control measures 20 First Server 30 Second Server 40 Third Server 2001 CPU 2002 ROM 2003 RAM 2004 Program 2005 storage device 2007 Drive Unit 2008 Communication Interface 2009 Communication Network 2010 Input / Output Interface 2011 Bus connecting each component

Claims

1. traffic information generating means for generating road traffic information for a predetermined period as an image; a notification acquisition means for acquiring a notification indicating the time of occurrence of a disaster in the vicinity of the road, The traffic information generating means generating the traffic information for a period excluding the occurrence time within the predetermined period in a first generation process; generating the traffic information for the occurrence time within the predetermined period by a second generation process different from the first generation process; A traffic information generating system, the first generation process is a process in which the traffic information generation means generates the traffic information without correcting the acquired image of the road based on the notification indicating the occurrence time, The second generation process is a process in which the traffic information generation means corrects the acquired image of the road based on the notification indicating the occurrence time, and generates the traffic information. Traffic information generation system.

2. traffic information generating means for generating road traffic information for a predetermined period as an image; a notification acquisition means for acquiring a notification indicating the time of occurrence of a disaster in the vicinity of the road, The traffic information generating means generating the traffic information for a period excluding the occurrence time within the predetermined period in a first generation process; generating the traffic information for the occurrence time within the predetermined period by a second generation process different from the first generation process; A traffic information generating system, the first generation process is a process in which the traffic information generation means generates, as the traffic information, an image of the road captured at a first frame rate; the second generation process is a process in which the traffic information generation means generates, as the traffic information, images of the road captured at a second frame rate higher than the first frame rate. Traffic information generation system.

3. the first generation process is a process in which the traffic information generation means generates the traffic information without correcting the acquired image of the road based on the notification indicating the occurrence time, The second generation process is a process in which the traffic information generation means corrects the acquired image of the road based on the notification indicating the occurrence time, and generates the traffic information. The traffic information generating system according to claim 2 .

4. the first generation process is a process in which the traffic information generation means generates, as the traffic information, an image of the road captured with a first gain; the second generation process is a process in which the traffic information generation means generates, as the traffic information, an image of the road captured at a second gain higher than the first gain. The traffic information generating system according to claim 2 .

5. a traffic information acquisition means for acquiring the traffic information; an instruction means for giving instructions to at least one of vehicles and people on the road based on the traffic information; The instruction means during the predetermined period excluding the occurrence time, the instruction is given based on the traffic information generated in the first generation process; and during the predetermined period, at the occurrence time, the instruction is given based on the traffic information generated in the second generation process. The traffic information generating system according to any one of claims 1 to 4.

6. 6. The traffic information generating system according to claim 5, wherein the instruction means and the traffic information generating means are realized by different servers.

7. The traffic information generating system according to claim 1 , wherein the traffic information generating means uses different servers to capture images of the road and generate the traffic information.

8. traffic information generating means for generating road traffic information for a predetermined period as an image; a notification acquisition means for acquiring a notification indicating the time of occurrence of a disaster in the vicinity of the road, The traffic information generating means generating the traffic information for a period excluding the occurrence time within the predetermined period in a first generation process; generating the traffic information for the occurrence time within the predetermined period by a second generation process different from the first generation process; A traffic information generating device, the first generation process is a process in which the traffic information generation means generates the traffic information without correcting the acquired image of the road based on the notification indicating the occurrence time, The second generation process is a process in which the traffic information generation means corrects the acquired image of the road based on the notification indicating the occurrence time, and generates the traffic information. Traffic information generation device.

9. A traffic information generating means for generating road traffic information for a predetermined period as an image; a notification acquisition means for acquiring a notification indicating the time of occurrence of a disaster in the vicinity of the road, The traffic information generating means generating the traffic information for a period excluding the occurrence time within the predetermined period in a first generation process; generating the traffic information for the occurrence time within the predetermined period by a second generation process different from the first generation process; A traffic information generating device, the first generation process is a process in which the traffic information generation means generates, as the traffic information, an image of the road captured at a first frame rate; the second generation process is a process in which the traffic information generation means generates, as the traffic information, images of the road captured at a second frame rate higher than the first frame rate. Traffic information generation device.

10. Taking images of the road for a predetermined period of time, Obtaining a notification indicating when a disaster will occur in the vicinity of the road; generating, as first traffic information, an image for a period excluding the occurrence time within the predetermined period, in a first generation process; generating, as second traffic information, an image at the occurrence time within the predetermined period by a second generation process different from the first generation process; A traffic information generating method, the first generation process is a process of generating the first traffic information without correcting the acquired image of the road based on the notification indicating the occurrence time, The second generation process is a process of correcting the acquired image of the road based on the notification indicating the occurrence time, and generating the second traffic information. Traffic information generation method.

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