JP2022034799A - Road management system - Google Patents

Abstract

To provide a road management system capable of easily maintaining the state of a road well.SOLUTION: A road management system according to one embodiment in which one or more information processing devices and a plurality of electromagnetic wave emitting devices installed in a plurality of regions and emitting electromagnetic waves toward roads are communicatively connected, comprises: first information acquisition means for acquiring first information including a first prediction time indicating a prediction time at which a first event related to weather starts in one or more regions; and first operation control means for executing the first operation for emitting electromagnetic waves to the electromagnetic wave emitting device installed in regions where the start of the first event is predicted at a first start time before the first prediction time based on the first information acquired by the first information acquisition means.SELECTED DRAWING: Figure 1

Description

The present invention relates to a road management system.

If snow accumulates on the road or the road surface freezes due to snowfall, it may be difficult or obstructive to drive a car. For example, Patent Document 1 discloses that far infrared rays are emitted toward a road for the purpose of melting snow on a road surface.

Utility Model Registration No. 3173536 Gazette

The present invention provides a road management system that can easily maintain good road conditions.

According to one embodiment of the present invention, in a road management system in which one or more information processing devices and a plurality of electromagnetic wave emitting devices installed in a plurality of areas and emitting electromagnetic waves toward a road are communicably connected. Therefore, it was acquired by the first information acquisition means for acquiring the first information including the first estimated time indicating the expected time when the first event related to the weather is started in one or a plurality of areas, and the first information acquisition means. Based on the first information, a first method of emitting electromagnetic waves to an electromagnetic wave emitting device installed in an area where the start of the first event is expected at a first start time before the first expected time. A road management system including a first motion control means for executing motion is provided.

According to one embodiment of the present invention, there is provided a road management system capable of easily maintaining a good road condition.

FIG. 1 is a schematic system configuration diagram illustrating the road management system according to the first embodiment. FIG. 2 is a schematic functional block diagram of the road management system according to the first embodiment. FIG. 3 is an exemplary data structure diagram of management information held in the road management system according to the first embodiment. FIG. 4 is a schematic perspective view illustrating an electromagnetic wave emitting device of the road management system according to the first embodiment. FIG. 5 is a schematic top view illustrating the electromagnetic wave emitting device of the road management system according to the first embodiment. FIG. 6 is a schematic cross-sectional view for explaining the electromagnetic wave emitted by the electromagnetic wave emitting device of the road management system according to the first embodiment. FIG. 7A is a schematic diagram illustrating an irradiation mode of electromagnetic waves radiated to the road by the road management system according to the first embodiment. FIG. 7B is a schematic diagram illustrating an irradiation mode of electromagnetic waves radiated to the road by the road management system according to the first embodiment. FIG. 7C is a schematic diagram illustrating an irradiation mode of lighting applied to the road by the road management system according to the first embodiment. FIG. 8 is a schematic top view illustrating another installation example of the electromagnetic wave emitting device and the lighting device in the road management system according to the first embodiment. FIG. 9 is a schematic diagram illustrating an electromagnetic wave emitting device of the road management system according to the first embodiment. FIG. 10 is a schematic perspective view illustrating the road management system according to the second embodiment. FIG. 11A is a schematic top view illustrating the road management system according to the second embodiment. FIG. 11B is a schematic diagram illustrating the road management system according to the second embodiment. FIG. 12 is a schematic functional block diagram relating to the road management system according to the second embodiment. FIG. 13 is a flowchart illustrating the road management method according to the third embodiment. FIG. 14 is an exemplary configuration diagram of hardware that realizes information processing in the apparatus according to each embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present specification, the same elements as those described above with respect to the above-mentioned figures are designated by the same reference numerals, and detailed description thereof will be omitted as appropriate.

(First Embodiment)
1 and 2 are a schematic system configuration diagram and a functional block diagram illustrating the road management system according to the first embodiment. As shown in FIG. 1, in the road management system 110 according to the first embodiment, one or more information processing devices 20 and a plurality of electromagnetic wave emitting devices 10 are communicably connected to each other. The information processing device 20 and the plurality of electromagnetic wave emitting devices 10 can communicate with each other by any wireless or wired method.

As shown in FIG. 1, the plurality of electromagnetic wave emitting devices 10 are installed in a plurality of areas 58. The plurality of regions 58 include, for example, regions 58a and regions 58b. For example, a plurality of electromagnetic wave emitting devices 10 are provided in each of the plurality of regions 58. The plurality of electromagnetic wave emitting devices 10 include an electromagnetic wave emitting device 10a, an electromagnetic wave emitting device 10b, and the like. For example, a plurality of electromagnetic wave emitting devices 10a may be provided in the area 58a, and a plurality of electromagnetic wave emitting devices 10b may be provided in the area 58b.

Here, the area 58 is an area on a cohesive land. For example, prefectures and cities, wards, towns and villages can also be units of regions 58. Further, the area 58 may be configured in a range smaller than this. Further, each of the plurality of regions 58 does not have to be configured with the same area and outer shape.

For example, the unit of the area 58 may be separated by the unit of the place name marked by the road sign. Alternatively, a plurality of consecutive place names on the land may be collectively referred to as one area 58 in the unit of the place name written by the road sign. Further, the area 58 composed of one place name and the area 58 composed of a plurality of place names may be included.

Further, for example, the unit of the area 58 may correspond to the unit managed in the meteorological information. Further, for example, the unit of the area 58 may correspond to the unit managed in the road information. Further, for example, the unit of the area 58 may correspond to the unit managed in the road information of the expressway. The unit of the area 58 may be determined by the unit of the service area or the entrance / exit.

On the other hand, the unit of region 58 should not be too small. For example, if the size of a common house is the unit of the area 58, it may be too small for the unit of the area 58. It can be said that it is preferable that the average size of the area 58 is larger than 1 km2 from the viewpoint that the number of units to be managed does not become too large.

Roads 50 are provided in each of the plurality of areas 58. The road 50 has a sidewalk and a roadway, but either of them may be used. Here, the explanation will proceed on the assumption that the road 50 is a roadway.

As shown in FIG. 1, the plurality of electromagnetic wave emitting devices 10 emit electromagnetic waves 18 toward the road 50. In one example, the electromagnetic wave 18 includes infrared light. Further, in one example, the electromagnetic wave 18 includes far infrared rays. Infrared rays include near-infrared rays, mid-infrared rays, and far-infrared rays.

The road 50 includes a road 50 having a width of one lane (such as a one-way road) and a road 50 having a width of a plurality of lanes. Further, the road 50 having a plurality of lanes includes a road 50 having one lane on each side and a road 50 having a plurality of lanes on each side. There is also a road 50 with one lane on one side and a plurality of lanes on the other side. It is preferable that at least one or more electromagnetic wave emitting devices 10 out of the plurality of electromagnetic wave emitting devices 10 are installed so as to emit the electromagnetic wave 18 toward the road 50 having a width of a plurality of lanes.

Each of the plurality of electromagnetic wave emitting devices 10 includes an emitting unit 11. For example, the electromagnetic wave 18 is emitted to the outside from the emission surface of the emission unit 11. In this example, a plurality of lighting devices 15 may be further installed on the road 50. Visible light (illumination light 15L) is emitted from the plurality of lighting devices 15 toward the road 50. For example, the lighting device 15 and the electromagnetic wave emitting device 10 may be incorporated in one housing or may be incorporated in separate housings.

As shown in FIG. 1, on the road 50 of interest, the extending direction of the road 50 (the traveling direction of the vehicle) is defined as the X-axis direction. The left-right direction (width direction) of the road 50 is the Z-axis direction. The direction perpendicular to the X-axis direction and the Z-axis direction is defined as the Y-axis direction. The Y-axis direction is the height direction.

As shown in FIG. 1, a plurality of electromagnetic wave emitting devices 10 are installed on the side of the road 50. Further, they are installed at predetermined intervals along the X-axis direction, that is, in the traveling direction of the road 50. The same applies to the plurality of lighting devices 15. The lighting device 15 is a so-called road lighting.

As shown in FIG. 1, the electromagnetic wave emitting device 10 emits an electromagnetic wave 18 from the side of the road 50 toward the road 50. Further, it is preferable that the irradiation range of the electromagnetic wave 18 emitted by the electromagnetic wave emitting device 10 reaches at least a position of 7.00 m or more and 15.00 m or less in the Z-axis direction from the installation location of the electromagnetic wave emitting device 10. As a result, the electromagnetic wave 18 can be appropriately delivered from the electromagnetic wave emitting device 10 to the roadway two lanes ahead or three lanes ahead.

Further, the irradiation width of the electromagnetic wave 18 irradiated on the road 50 in the Z-axis direction is preferably 6.00 m or more. Further, in the Z-axis direction, it is preferable that the irradiation width of irradiation with light having an intensity of 50% or more of the peak light intensity of the electromagnetic wave 18 irradiated to the road 50 is 6.00 m or more. As a result, as described above, it is possible to sufficiently irradiate the area through which the vehicle passes with the electromagnetic wave 18 on the roadway having two or more lanes.

Further, in the Z-axis direction, the irradiation width of irradiation with light having an intensity of 50% or more of the peak light intensity of the electromagnetic wave 18 irradiated to the road 50 is preferably 15.00 m or less, or 10.00 m. The following is preferable. If it is 15.00 m, it can cover the width of about 3 lanes, and if it is 10.00 m, it can cover the width of about 2 lanes.

Since the vehicle width may differ depending on the country or region, instead of this value, even if the numerical condition is such that the width of two lanes is covered or the irradiation width covering the width of three lanes is secured. good. Further, the electromagnetic wave 18 emitted from the electromagnetic wave emitting device 10 may have an irradiation width covering four or more lanes.

In the road management system 110, the temperature of the road 50 rises due to the electromagnetic wave 18 emitted from the electromagnetic wave emitting device 10. In other words, the electromagnetic wave 18 emitted from the electromagnetic wave emitting device 10 is emitted toward the road 50 in order to raise the road surface temperature of the road 50. As a result, it is possible to suppress or reduce the accumulation of snow on the road 50 when it snows.

As shown in FIG. 1, the information processing apparatus 20 acquires the first information 81. For example, the information processing apparatus 20 acquires the first information 81 output from the weather information providing unit 80. The first information 81 includes one or more regions 58 where the first event related to the weather is expected to start, and a first estimated time indicating the expected time when the first event is expected to start in the one or more regions 58. .. The weather information providing unit 80 holds the weather information including the first information 81. The weather information providing unit 80 may be, for example, a server managed by various businesses (for example, a government office or a company) capable of providing information on the weather. On the server managed by the Japan Meteorological Agency, weather forecasts within at least 24 hours from the present are managed collectively at predetermined time units in the unit of the area managed by the Japan Meteorological Agency. The first information 81 may be provided.

In addition, here, the forecast and the forecast are not distinguished, and are collectively referred to as the forecast. So, for example, the expected time here is a time that includes and does not include a forecast, a time that includes a forecast and does not include a forecast, or a time that includes forecasts and forecasts. , Are not distinguished, and any of them may be used.

As shown in FIG. 2, the road management system 110 according to the embodiment includes a first information acquisition means 31 and a first operation control means 41. At least a part of the first information acquisition means 31 and at least a part of the first operation control means 41 may be included in, for example, one or more information processing devices 20.

The first information acquisition means 31 acquires the first information 81. As described above, the first information 81 includes the first estimated time of the first event. The first event is, for example, snowfall. As will be described later, the first event may include fog and the like. For example, when the first event is snowfall, for example, the first information acquisition means 31 acquires the first estimated time indicating the expected time when snowfall starts in one or a plurality of areas 58 as the first information 81.

The first operation control means 41 illustrated in FIG. 2 is installed in the area 58 where the start of the first event is expected at the first start time based on the first information 81 acquired by the first information acquisition means 31. The electromagnetic wave emitting device 10 is caused to execute the first operation of emitting the electromagnetic wave 18. The first start time is a time before the first expected time.

For example, the first information acquisition means 31 acquires the first expected time indicating the time when the snowfall is expected to start as the first information 81. The first operation control means 41 causes the electromagnetic wave emitting device 10 in the area 58 where snowfall is expected to start emitting the electromagnetic wave 18 at the first start time before the first predicted time. Between the first start time and the first predicted time, a time interval necessary for sufficiently raising the road surface temperature of the road 50 at the first predicted time is secured. Therefore, the first start time is determined with a predetermined time equal to or longer than the required time interval from the first expected time. In other words, it can be said that the first start time is a predetermined time before the first expected time. The required time interval may be appropriately set, but may be set to, for example, 1 minute or more and 30 minutes or less. By raising the road surface temperature of the road 50 in advance, it is possible to prevent snow from accumulating on the road 50. If the road surface temperature can be sufficiently raised, it is preferable that the time interval is short from the viewpoint of energy saving.

Further, the time interval between the first start time and the first expected time may be determined based on the region 58, the season, the time, and the like. For example, the time interval is set longer in the dark time zone than in the bright time zone. By making the setting of the time interval between the first expected time and the first start time variable, the first disclosure time can be more accurately determined according to the situation such as region, season and time.

As shown in FIG. 2, for example, the first operation control means 41 transmits the first control signal 41s to the electromagnetic wave emitting device 10. In one example, the first control signal 41s may be transmitted at the first start time. At the time when the first control signal 41s is transmitted, the electromagnetic wave 18 starts to be emitted from the electromagnetic wave emitting device 10. In another example, information including the first start time may be transmitted as the first control signal 41s before the first start time. For example, the first start time is stored in a memory or the like provided in the electromagnetic wave emitting device 10, and the electromagnetic wave emitting device 10 starts emitting the electromagnetic wave 18 at the stored first start time.

In the embodiment, for example, the road 50 can be made difficult to accumulate snow before it snows. As a result, snow accumulation can be suppressed and the condition of the road 50 can be easily maintained. For example, even if there is snowfall, if the road 50 is maintained in a state where no snow is accumulated, the driver of the car is easier to drive than in a state where there is snowfall. In the embodiment, by starting the first operation at the first start time before the first expected time of the first event (for example, snowfall), the road 50 is in a defective state (for example, driving is hindered). It is possible to suppress a heavy snowfall and maintain a good condition.

For example, the road management system 110 according to the embodiment cooperates with the meteorological system (weather information providing unit 80) and acquires snowfall information (information on the snowfall area and the estimated start time of snowfall) from the meteorological system. Then, the road management system 110 controls the electromagnetic wave emitting device 10 in the corresponding area so as to irradiate the road 50 with the electromagnetic wave 18 from a time before the expected time. The electromagnetic wave 18 preferably has a wavelength at which the temperature of the road 50 tends to rise. The electromagnetic wave 18 preferably has a wavelength that is easily absorbed by a material (for example, asphalt) on the surface of the road 50.

As described above, for example, when the first event is snowfall, the electromagnetic wave 18 preferably includes infrared rays or far infrared rays. This makes it possible to effectively heat the surface of the road 50. Further, when the first event is snowfall, the electromagnetic wave 18 may include visible light. Since the electromagnetic wave 18 is visible light, the electromagnetic wave 18 can be used as illumination light. Since the electromagnetic wave 18 is visible light, it is easy to see the area irradiated with the electromagnetic wave 18. For example, maintenance of the electromagnetic wave emitting device 10 becomes easy.

As shown in FIG. 2, the first information acquisition means 31 may acquire degree information 81G. Degree information 81G includes information about the degree (eg, intensity, etc.) of the first event. The first information acquisition means 31 acquires degree information 81G in the area 58 where the occurrence of the first event is expected. For example, when the first event is snowfall, the degree information 81G includes the expected snowfall amount per unit time, the expected snowfall amount per unit time, and the like. Alternatively, it may be information such as a heavy snow warning or a heavy snow warning. The degree information 81G may be included in the first information 81. The first information acquisition means 31 may acquire the degree information 81G separately from the first information 81. The first motion control means 41 controls the first motion to be executed by the electromagnetic wave emitting device 10 based on the acquired degree information 81G.

For example, the first motion control means 41 causes the electromagnetic wave emitting device 10 to execute the first motion at the first predicted time and the first start time determined based on the degree information 81G. Further, for example, the first operation control means 41 causes the electromagnetic wave emitting device 10 to execute the first operation with the intensity determined based on the above-mentioned degree information 81G. Further, for example, the first motion control means 41 may determine both the first start time and the intensity based on the degree information 81G.

For example, when the degree of the first event (snowfall or the like) is large (snowfall amount per hour or the like), the intensity of the electromagnetic wave 18 emitted from the electromagnetic wave emitting device 10 is increased. For example, when the amount of snowfall per hour, which is the degree of snowfall, which is the first event, is the first value, it is between the emission start time (first start time) of the electromagnetic wave 18 and the first expected time. When the time (predetermined time) is the first value and the degree of snowfall is the second value smaller than the first value, the predetermined time is set to the second value smaller than the first value. By carrying out the first operation according to the degree of the first event, the state of the road 50 can be maintained more appropriately. In addition, it is possible to prevent excessive first operation from being carried out, and it is possible to carry out energy-saving road management.

In the embodiment, the road 50 may contain a material that easily absorbs the electromagnetic wave 18. The road management system 110 may further include a road 50 containing a heat generating material. The heat generating material generates heat by being irradiated with the electromagnetic wave 18 emitted from the electromagnetic wave emitting device 10. As the heat generating material, for example, carbon black, gold nanoparticles, poly (3-hexylthiophene) (P3HT) and the like can be adopted. For example, the road 50 can be efficiently heated and snow accumulation can be efficiently suppressed.

When the electromagnetic wave emitted by the electromagnetic wave emitting device 10 contains infrared rays or far infrared rays and does not contain visible light, the heat generating material may have a characteristic of generating heat with respect to light having a wavelength other than visible light. preferable. Further, the heat generating material is preferably a material that generates heat by electromagnetic waves in the wavelength range of infrared rays or far infrared rays. Further, it is still preferable that the material has low heat generation characteristics due to electromagnetic waves in the wavelength range of visible light. In high temperature seasons such as summer, it may be desirable that the road surface temperature is not high, so the smaller the effect of heat generated by visible light, the smaller the effect of sunlight and control the rise in road surface temperature. can do. Here, the wavelength range of visible light is set to 400 nm to 760 nm.

As shown in FIG. 2, the road management system 110 may include a second information acquisition means 32 and a second motion control means 42. For example, the second information acquisition means 32 and the second operation control means 42 may be included in one or more information processing devices 20. The operation performed by the second information acquisition means 32 and the second motion control means 42 may be performed by the first information acquisition means 31, the first motion control means 41, or the like.

The second information acquisition means 32 acquires the second information 82. The second information 82 includes the second event. The second information 82 is issued, for example, when the first event ends. The second information 82 includes information regarding the end of the first event.

The second operation control means 42 stops the first operation of the electromagnetic wave emitting device 10 executing the first operation based on the second information 82 acquired by the second information acquisition means 32. To execute.

For example, when the first event (for example, snowfall or the like) ends, the second control signal 42s is supplied from the second operation control means 42 to the electromagnetic wave emitting device 10 based on the second information 82 including the end information. .. The electromagnetic wave emitting device 10 stops emitting the electromagnetic wave 18 by the second control signal 42s. As a result, more accurate operation can be carried out, and energy-saving road management can be carried out.

Further, as shown in FIG. 1, the road management system 110 may include a terminal 88. The terminal 88 is possessed by the confirmer 87 who confirms the condition of the road 50. The terminal 88 may be, for example, a tablet-type computer. The terminal 88 is communicably connected to the information processing device 20. The second information acquisition means 32 exemplified in FIG. 2 may acquire the second information 82 transmitted based on the input information input by the confirmer 87 via the terminal 88. By confirming the condition of the road 50, the confirmer 87 can accurately identify the road 50 for which the first operation is no longer necessary and perform the above-mentioned second operation (stopping the emission of the electromagnetic wave 18).

As shown in FIG. 2, the road management system 110 may include a storage unit 25. The first operation control means 41 can communicate with the storage unit 25 by any wired or wireless method. The second operation control means 42 can communicate with the storage unit 25 by any wired or wireless method. Further, the storage unit 25 may be provided in the information processing device 20 provided with the first motion control means 41 or the second motion control means 42. For example, in the storage unit 25, the management information 26 that manages the area 58 in which each of the plurality of electromagnetic wave emitting devices 10 is installed is stored. The first operation control means 41 is expected to start the first event based on, for example, the first information 81 acquired by the first information acquisition means 31 and the management information 26 recorded in the storage unit 25. The electromagnetic wave emitting device 10 installed in the area 58 may be specified. For example, the second operation control means 42 may specify the electromagnetic wave emitting device 10 that performs the second operation (stopping the electromagnetic wave 18) based on the management information 26.

FIG. 3 is a diagram illustrating the data structure of the management information 26. The management information 26 includes, for example, road name information R-ID, section information J-ID, area information A-ID, electromagnetic wave emitting device information L-ID, and the like.

The road name information is information indicating the road name of the road 50 or information for identifying the road name of the road 50. For example, in Japanese road 50, there are road names such as Tomei Expressway and Hokuriku Expressway. In the example of FIG. 3, information such as "XXXXXX1" to "XXXXXX4" is stored as the road name information R-ID.

The section information is information indicating a section on the road 50 or information for identifying each section of the road 50. For example, a road 50 between two landmarks, which is set by using a service area, a parking area, or the like on the road 50 (for example, a highway) as a landmark, can be one section. In the example of FIG. 3, information such as "YYYYYY1" to "YYYYYY4" is stored as the section information J-ID.

The area information is information indicating the name of the area 58 or information for identifying each area 58. In the example of FIG. 3, information such as "ZZZZZZ1" to "ZZZZZZ4" is stored as the regional information A-ID.

The electromagnetic wave emitting device information is information that identifies the electromagnetic wave emitting device 10 individually or in units of regions 58. In the example of FIG. 3, information such as "N ###### 1" to "N ###### 4" is stored as the electromagnetic wave emitting device information L-ID. This information is stored in association with each other.

The road management system 110 uses one or more of the road name information, the section information, and the area information to specify the area 58 whose operation should be controlled. Therefore, these pieces of information correspond to the information that can specify the area 58 in the first information 81 acquired from the weather information providing unit 80. For example, when the area 58 is specified in the unit of the road name or the section, the road name information or the section information becomes the area specifying information for specifying the area 58. The management information 26 does not have to include all of the road name information, the section information, and the area information, and may include information that can identify the area 58.

The road management system 110 includes a plurality of electromagnetic wave emitting devices 10 installed in the area 58 specified as the target of operation control based on the management information 26 and the first information 81 acquired from the weather information providing unit 80. Can be identified.

For example, a plurality of electromagnetic wave emitting devices 10 having recognition information of "N ###### 1" are installed in a section of "YYYYYY1" on a road 50 named "XXXXXX1". Further, the plurality of electromagnetic wave emitting devices 10 are associated with the area 58 of "ZZZZZZ1". In the example of FIG. 3, the area information A-ID and the road name information R-ID are one-to-one, but one-to-many or many-to-one may be used. It is clear from the actual situation that the road name or section and the area 58 do not necessarily have to be one-to-one.

For example, the road management system 110 (for example, one or more information processing devices 20) periodically acquires meteorological data (for example, first information 81) from the meteorological information providing unit 80. For example, the first information acquisition means 31 acquires the first information 81 by polling communication. For example, the first information 81 is acquired every minute. The first information 81 includes a region 58 where the first event (for example, snowfall or the like) occurs, and a first estimated time of the first event. Further, the first information 81 includes information on the area 58 and the first estimated time for the area 58 in which the first event occurs within one hour from the acquisition time of the first information 81. Based on such first information 81, the emission of the electromagnetic wave 18 is started at the first start time before the first expected time (for example, 10 minutes before).

FIG. 4 is a schematic perspective view illustrating an electromagnetic wave emitting device of the road management system according to the first embodiment. As shown in FIG. 4, the electromagnetic wave 18 is preferably located below the illumination light 15L. For example, as shown in FIGS. 1 and 4, the height of the emitting unit 11 that emits the electromagnetic wave 18 (position in the Y-axis direction) is the height of the lighting device 15 that emits the illumination light 15L (position in the Y-axis direction). ) Is lower. With such a configuration, it becomes easier for the electromagnetic wave 18 to pass between the road surface of the road 50 and the minimum ground clearance of the vehicle 55 as compared with the illumination light 15L. By passing the electromagnetic wave 18 at a position lower than the minimum ground clearance of the vehicle 55, the electromagnetic wave is also applied to the road 50 located farther in the Z-axis direction than the vehicle 55, except for the positions of the front and rear wheels of the vehicle 55. 18 can be irradiated. That is, the electromagnetic wave 18 is suppressed from being blocked by the vehicle 55, and the road can be heated efficiently.

As shown in FIG. 4, the road 50 includes a first lane 50A through which the vehicle 55 passes. The height H18 of the electromagnetic wave 18 from the surface (road surface) of the road 50 at the end 50e closer to the electromagnetic wave emitting device 10 among both ends of the first lane 50A is preferably 30.0 cm or less, for example. By irradiating the electromagnetic wave 18 at a low angle, it is possible to suppress the electromagnetic wave 18 from being blocked by the vehicle 55.

In the embodiment, the height H18 from the surface of the road 50 is preferably 13.0 cm or less. The minimum ground clearance for many types of vehicles is 13 cm or less. Further, the height H18 from the surface of the road 50 is preferably 9.0 cm or less. In Japanese vehicle inspection, the inspection cannot be passed unless the minimum ground clearance is 9.0 cm or more, so if it is 9.0 cm or less, the electromagnetic wave 18 can be emitted at a position lower than the minimum ground clearance of almost all vehicles. ..

As shown in FIG. 4, the height H11 from the surface of the road 50 to the emission position of the electromagnetic wave 18 in the electromagnetic wave emitting device 10 is preferably 60 cm or less. Further, it is more preferably 30 cm or less. The electromagnetic wave 18 emitted from such a low position can suppress the electromagnetic wave 18 from being blocked by the vehicle 55.

As shown in FIGS. 1 and 4, the road management system 110 may include a lighting device 15. The lighting device 15 can emit the illumination light 15L toward the road 50. The height (substantially the height H11) of the electromagnetic wave emitting device 10 (for example, the emitting portion 11) is lower than the height H15 of the lighting device 15 when the road 50 is used as a reference.

FIG. 5 is a schematic top view illustrating the electromagnetic wave emitting device of the road management system according to the first embodiment. As shown in FIG. 5, for example, the road 50 includes a first lane 50A and a second lane 50B. In this example, the road 50 further includes a roadside zone 50SB. There is a first lane 50A between the roadside zone 50SB and the second lane 50B. The roadside zone 50SB, the first lane 50A, and the second lane 50B are arranged in this order from the side portion 50S of the road 50 toward the central portion 50T of the road 50.

As shown in FIG. 5, the electromagnetic wave emitting device 10 is installed on the side portion 50S of the road 50. At least a part of the electromagnetic wave 18 travels from the side portion 50S toward the central portion 50T of the road 50. By installing the electromagnetic wave emitting device 10 at a low position on the side portion 50S of the road 50, for example, maintenance of the electromagnetic wave emitting device 10 becomes easy.

In the example shown in FIG. 5, the lighting device 15 overlaps with the electromagnetic wave emitting device 10 in the Z-axis direction (see FIGS. 1 and 4). As shown in FIG. 5, the range in which the road 50 is irradiated with the electromagnetic wave 18 by one electromagnetic wave emitting device 10 is wider than the range in which the illumination light 15L is irradiated on the road 50 by one lighting device 15.

For example, the illumination light 15L only needs to be able to recognize the route of the road 50, and does not necessarily have to reach the entire surface of the road 50. On the other hand, considering that the electromagnetic wave 18 suppresses the accumulation of snow on the road 50, it is preferable that the electromagnetic wave 18 irradiates the entire surface of the road (at least the road through which the vehicle passes) of the road 50. Therefore, in top view, it is sandwiched between two virtual straight lines that pass through the emission positions of the electromagnetic waves 18 in the electromagnetic wave emission devices 10 located at both ends of the plurality of electromagnetic wave emission devices 10 installed at predetermined intervals and proceed in the Z-axis direction. It is preferable that the irradiation range of the electromagnetic wave 18 by the plurality of electromagnetic wave emitting devices 10 covers the entire one or a plurality of traffic zones of the road 50. Further, it is preferable that the irradiation range of the electromagnetic wave 18 by the plurality of electromagnetic wave emitting devices 10 covers at least the entire two lanes (two lanes) close to the electromagnetic wave emitting device 10.

Further, regarding a plurality of electromagnetic wave emitting devices 10 installed at predetermined intervals along the road 50, the irradiation range of the electromagnetic wave 18 emitted from one electromagnetic wave emitting device 10 on the road 50 and the electromagnetic wave emitting device installed next to the electromagnetic wave emitting device 10. It is preferable that the electromagnetic wave 18 emitted from 10 partially overlaps with the irradiation range of the road 50. By supplementing the region where the irradiation intensity of the irradiated electromagnetic wave 18 is relatively weak with the electromagnetic wave emitting devices 10 installed next to each other, the electromagnetic wave 18 can be irradiated more evenly in the required irradiation range of the road 50. ..

FIG. 6 is a schematic cross-sectional view for explaining the electromagnetic wave emitted by the electromagnetic wave emitting device of the road management system according to the first embodiment. As shown in FIG. 6, in the electromagnetic wave emitting device 10, the electromagnetic wave 18 reflected by the irradiation region control unit 12 at a position close to (low position) from the electromagnetic wave emitting element 11E is located far from the electromagnetic wave emitting element 11E (high position). It is incident closer to the road 50 than the electromagnetic wave 18 reflected by the irradiation area control unit 12.

7A and 7B are diagrams schematically showing an irradiation mode of electromagnetic waves emitted from an electromagnetic wave emitting device to a road in the road management system according to the first embodiment. FIG. 7C is a diagram schematically showing an irradiation mode of illumination light emitted from a lighting device to a road in the road management system according to the first embodiment. In this example, the road 50 includes a roadside zone 50SB, a first lane 50A, a second lane 50B, and a third lane 50C. The roadside zone 50SB, the first lane 50A, the second lane 50B, and the third lane 50C are arranged in this order from the side portion 50S of the road 50 toward the central portion 50T of the road 50.

As shown in FIG. 7A, for example, in the electromagnetic wave emitting device 10, the electromagnetic wave 18 emitted from the emission position 11H (upper emission position) on the upper portion of the emission surface of the emission unit 11 is transferred to the roadside zone 50SB and the first passage zone 50A. Mainly incident. The electromagnetic wave 18 shown in FIG. 7A may be an electromagnetic wave emitted from an LED (Light Emitting Diode). The upper portion may be, for example, the upper region of the region in which the emission surface of the emission portion 11 is equally divided in the Y-axis direction.

As shown in FIG. 7B, for example, in the electromagnetic wave emitting device 10, the electromagnetic wave 18 emitted from the emission position 11L (lower emission position) in the lower portion of the emission surface of the emission unit 11 is the second lane 50B and the third. It is mainly incident on the lane 50C. The lower portion can be, for example, the lower region of the region in which the emission surface of the emission unit 11 is equally divided into two in the Y-axis direction.

By adopting the method of irradiating the electromagnetic wave 18 as illustrated in FIGS. 7A and 7B, the electromagnetic wave 18 can irradiate a wide area of the road 50 relatively uniformly. This, for example, heats a large area of the road 50 relatively uniformly.

In this way, the electromagnetic wave 18 is emitted from the first position (for example, the upper emission position 11H) toward the first region of the road 50 (for example, the roadside zone 50SB and the first traffic zone 50A). The second position (for example, the lower emission position) toward the second region (for example, the second lane 50B and the third lane 50C) located on the road 50 farther from the electromagnetic wave emitting device 10 than the first region. The electromagnetic wave 18 is emitted from 11L). The second position is lower than the first position.

The electromagnetic wave emitting element 11E for irradiating the first region with the electromagnetic wave 18 and the electromagnetic wave emitting element 11E for irradiating the second region with the electromagnetic wave 18 may be the same or different. When realized by the same electromagnetic wave emitting element 11E, for example, as shown in FIG. 6, the light reflected at a position far from the electromagnetic wave emitting element 11E is in the first region, and the electromagnetic wave 18 reflected at a close position is in the second region. It emits toward. As a result, the emission position of the electromagnetic wave 18 emitted toward the second region can be made lower than the emission position of the electromagnetic wave 18 emitted toward the first region.

Further, the electromagnetic wave emitting device 10 may include an LED and an LD (Laser Diode). In this case, the electromagnetic wave 18 emitted from the LED is incident on the lane near the electromagnetic wave emitting device 10. On the other hand, the electromagnetic wave 18 emitted from the LD is incident on the lane far from the electromagnetic wave emitting device 10. For example, an LED may be used for the electromagnetic wave emitting element 11E that irradiates the first region, and an LD may be used for the electromagnetic wave emitting element 11E that irradiates the second region. By irradiating the farther region with the electromagnetic wave 18 emitted from the LD, it is possible to irradiate the distant electromagnetic wave 18 with suppressed diffusion.

As shown in FIG. 7C, for example, the illumination light 15L emitted from the lighting device 15 mainly irradiates the first lane 50A to the third lane 50C. Further, the emission position of the illumination light 15L in the illumination device 15 is higher than the emission position of the electromagnetic wave 18 in the electromagnetic wave emission device 10.

FIG. 8 is a schematic top view illustrating another installation example of the electromagnetic wave emitting device and the lighting device in the road management system according to the first embodiment. FIG. 9 is a schematic aspect illustrating an electromagnetic wave emitting device of the road management system according to the first embodiment.

As shown in FIG. 8, the road management system 110 includes a plurality of electromagnetic wave emitting devices 10 and a plurality of lighting devices 15. The positions of the plurality of electromagnetic wave emitting devices 10 in one X-axis direction (extending direction of the road 50) are the positions of the plurality of lighting devices 15 in one X-axis direction and another X of the plurality of lighting devices 15. It is between the position in the axial direction. For example, the positions of the plurality of lighting devices 15 in one X-axis direction include the positions of the plurality of electromagnetic wave emitting devices 10 in one X-axis direction and the positions of the plurality of electromagnetic wave emitting devices 10 in another X-axis direction. Is between. As described above, the plurality of electromagnetic wave emitting devices 10 and the plurality of lighting devices 15 may be provided at different positions along the extending direction of the road 50. In this example, the electromagnetic wave emitting device 10 and the lighting device 15 are alternately provided.

As shown in FIG. 9, the height of the electromagnetic wave emitting device 10 may be different from the height of the lighting device 15 with respect to the road 50. For example, the height of the electromagnetic wave emitting device 10 is lower than the height of the lighting device 15.

Snowfall was mentioned as an example of the first event, but fog generation can be mentioned as another example. For example, when dense fog is generated, the visibility of the road 50 may be impaired by the fog in the illumination light such as white light.

In this case, it is desirable that the electromagnetic wave 18 is visible light including a wavelength of 580 nm or more. Further, in this case, it is desirable that the electromagnetic wave 18 which is visible light does not try to irradiate the entire lane of the road 50, but irradiates a part of it. The part is, for example, an area where a lane boundary line is marked. Alternatively, it may be the center line. By irradiating visible light only in a part of the area, it is possible to recognize the lane in which the vehicle 55 should drive even if it is affected by the diffusion of light due to fog, which improves driving safety. be able to.

Further, in this case, the first start time may be set from a viewpoint different from that in the case of snow. For example, the first start time may be set to a time close to the first expected time. In the case of fog, it is not necessary to exert the effect of raising the road surface temperature of the road 50 as in the case of snow. The electromagnetic wave 18 may be irradiated before the visibility starts to deteriorate. For example, the first start time can be set one minute before the first expected time. Since it may be difficult to accurately grasp the weather condition, the weather condition may be set 10 minutes before, for example, with a margin. By controlling the operation in this way, even if fog is generated, the risk that the driver of the vehicle 55 misunderstands the line to be traveled on the road 50 is reduced, and the condition of the road 50 is maintained in good condition. Can be done.

(Second Embodiment)
FIG. 10 is a schematic perspective view illustrating the road management system according to the second embodiment. FIG. 11A is a schematic top view illustrating the road management system according to the second embodiment. FIG. 11B is a schematic diagram illustrating the road management system according to the second embodiment, and is a view seen from the back side of the vehicle. FIG. 12 is a schematic functional block diagram relating to the road management system according to the second embodiment.

As shown in FIG. 10, in the road management system 120 according to the second embodiment, one or more information processing devices 20, a plurality of electromagnetic wave emitting devices 10, and one or more vehicles 55 are communicably connected to each other. ..

In the second embodiment, the information processing apparatus 20 supplies the control signal 43s for emitting the electromagnetic wave 55EM from the vehicle 55 traveling in the area 58 where the first event is occurring. As a result, in addition to the electromagnetic wave 18 from the electromagnetic wave emitting device 10, the electromagnetic wave 55EM from the vehicle 55 traveling there can be irradiated to the road 50 in the target area. Thereby, for example, when the first event (for example, snowfall) occurs, the road 50 can be maintained in a good state (for example, a state in which snow accumulation is suppressed).

As shown in FIGS. 10 and 11A, in the second embodiment, as in the first embodiment, at the first start time before the first predicted time indicating the expected time when the first event related to the weather starts. , The electromagnetic wave 18 is emitted by the electromagnetic wave emitting device 10. On the other hand, unlike the electromagnetic wave emitting device 10, the moving vehicle 55 is not fixedly installed, and the electromagnetic wave depends on whether or not the vehicle 55 is traveling in the area 58 where the first event occurs. The emission of 55EM is controlled. The electromagnetic wave 55EM does not have to have the same wavelength as the electromagnetic wave 18.

As shown in FIG. 12, the vehicle 55 has an electromagnetic wave emitting element 55A, a position information acquisition means 55B, and a third motion control means 55C. The electromagnetic wave emitting element 55A emits the electromagnetic wave 55EM. The electromagnetic wave emitting element 55A may be mounted by being incorporated in a vehicle lamp of the vehicle 55, or may be mounted on the lower surface of the vehicle 55 (for example, an underfloor or an undercover). The position information acquisition means 55B is, for example, a GPS (Global Positioning System), and acquires position information for specifying the current position of the vehicle 55. The third operation control means 55C controls the emission of the electromagnetic wave 55EM by the electromagnetic wave emitting element 55A based on the event occurrence area information received from the information processing apparatus 20 and the position information acquired from the position information acquisition means 55B. The third operation control means 55C is a control means executed by a program executed by a control unit such as a CPU, similarly to the information processing apparatus 20.

The operation control of the electromagnetic wave 55EM by the car 55 will be described. The third operation control means 55C starts control in response to the start of the engine of the vehicle 55. It should be noted that the control may be started according to a predetermined state (for example, drive) of the gear of the vehicle 55 instead of starting the engine. The third operation control means 55C acquires event occurrence area information from the information processing apparatus 20. The information processing device 20 that acquires the event occurrence area information may be different from the information processing device 20 that controls the operation of the electromagnetic wave emitting device 10 based on the first predicted time. For example, the position information corresponding to the GPS position information is acquired from the information processing device 20 capable of transmitting the event occurrence area information.

The event occurrence area information is information in which one or a plurality of areas 58 in which the first event occurs are specified. The event occurrence area information is acquired, for example, based on the latest first information and second information held at the time of acquiring the information. In addition to the area 58 where the first event occurs, the area 58 where the first event is expected to occur may be specified within a predetermined time. For example, the area 58 where the first expected time has arrived may be specified.

Further, in the third motion control means 55C, the current position of the vehicle 55 is the current position of the vehicle 55 based on the position information of the vehicle 55 acquired by the position information acquisition unit 55B and the event occurrence area information. Or, it is determined whether or not it is included in a plurality of regions 58. When it is determined that the element is included, the third operation control means 55C controls the operation so that the electromagnetic wave 55EM is emitted from the electromagnetic wave emitting element 55A. If it is determined that it is not included, the electromagnetic wave 55EM is not emitted from the vehicle 55. That is, when the electromagnetic wave 55EM is emitted, the emission of the electromagnetic wave 55EM is stopped.

The third operation control means 55C periodically acquires the event occurrence area information and the position information for specifying the current position of the vehicle 55, repeats the above determination based on the latest information, and repeats the above determination of the electromagnetic wave emitting element 55A. Control the operation.

When the third motion control means 55C determines that the current position of the vehicle 55 is included in one or a plurality of areas 58 where the first event is occurring, the vehicle 55 is further stopped. It may be determined whether or not there is. Examples of the determination of whether or not the gear is in the stopped state include a method of determining whether or not the gear is in a predetermined state (for example, drive). Further, for example, there is a method of determining whether or not the speedometer of the vehicle 55 is 0 km / h.

For example, it is based on the idea that the car is on the road 50 if it is driving but is temporarily stopped by a signal, and the electromagnetic wave 55EM does not have to stop in such a state. For example, it is preferable to determine whether or not the gear is in a predetermined state (for example, parking), and if it is determined that the gear is in a predetermined state, control so as not to emit the electromagnetic wave 55EM. Based on the idea that it is better to avoid continuous irradiation of the electromagnetic wave 55EM in the stopped state, it is judged whether or not the speedometer is 0 km, and if it is determined that it is 0 km, the electromagnetic wave 55EM is determined. It is preferable to control so as not to emit.

As described above, the road management system 120 according to the embodiment can emit the electromagnetic wave 55EM toward the road 50 from the vehicle 55 traveling in the area 58 where the first event (for example, snowfall) is occurring. Even when the electromagnetic wave 18 emitted toward the road 50 by the electromagnetic wave emitting device 10 is blocked by the vehicle 55, the amount blocked by the electromagnetic wave 55EM by the vehicle 55 can be supplemented, and the road condition can be easily maintained in good condition.

As shown in FIG. 11B, the electromagnetic wave emitting device 10 may be provided on a side wall 92 or the like provided on the side portion 50S of the road 50.

In the second embodiment, the electromagnetic wave 55EM has been described as an example of the object emitted from the vehicle 55, but the present invention is not limited to this. Since the car 55 is closer to the road 50 than the electromagnetic wave emitting device 10, the heat generated from the car 55, such as the driving heat of the engine, is used to face the road 50 downward or diagonally downward. In addition, hot air may be emitted. Further, a hot air generator may be provided separately from the engine or the like. Alternatively, the engine and the hot air generator may be used in a hybrid.

At this time, the car 55 is provided with a hot air emitting device 55A that emits hot air 55EM instead of the electromagnetic wave emitting element 55A. The hot air emitting device 55A can be mounted, for example, on the lower surface of the vehicle 55 (for example, underfloor or undercover). Since it is located near the road 50, heat can be effectively transferred to the road 50 as compared with the case where hot air is emitted from the installation position of the electromagnetic wave emitting device 10.

The operation control of the hot air 55EM can be performed by the same operation control as the electromagnetic wave 55EM. Further, the gear of the car 55 is, for example, a state in which the vehicle can travel (for example, the state of the drive is the state in which the vehicle can travel, and the parking is not the state in which the vehicle can travel). Further, control may be performed to change the operation mode depending on the difference between the running state (the state where the speedometer is not 0 km / h) and the stopped state (the state where the speedometer is 0 km / h). As a specific example, when the vehicle is running, the hot air 55EM is emitted with the emission direction of the hot air 55EM fixed, and when the vehicle is stopped, the hot air 55EM is emitted while moving the emission direction. 55 EM may be emitted. As a result, when the vehicle 55 is stopped for a certain period of time due to waiting for a traffic light or the like, the hot air 55EM is more uniformly applied to a wider area than when the hot air 55EM continues to be emitted to a fixed place on the road 50. It can be emitted.

As described above, it can be said that the electromagnetic wave 18, the electromagnetic wave 55EM, the hot air 55EM, and the like are specific examples of the heat acting element that gives heat to the road 50. Similarly, the electromagnetic wave emitting element 11E, the electromagnetic wave emitting element 55A, the hot air emitting device 55A, and the like can be said to be an example of the heat acting element emitting unit that emits the heat acting element. Similarly, the electromagnetic wave emitting device 10 and the hot air generating device can be said to be an example of a heat acting element generating device that generates a heat acting element.

(Third Embodiment)
FIG. 13 is a flowchart illustrating the road management method according to the third embodiment. As shown in FIG. 13, in the road management method according to the embodiment, the first information 81 including the first predicted time indicating the predicted time when the first event related to the weather is started in one or a plurality of areas 58 is acquired. (Step S110). Based on the acquired first information 81, the electromagnetic wave 18 is emitted from the electromagnetic wave emitting device 10 installed in the area 58 where the start of the first event is expected at the first start time before the first expected time. (Step S120). According to the road management method according to the embodiment, it is possible to easily maintain a good road condition.

The road management method according to the third embodiment may be implemented by a computer. For example, in the embodiment, the computer is made to acquire the first information 81 including the first estimated time indicating the expected time when the first event related to the weather is started in one or more regions 58, and the acquired first information 81 is used. Based on this, a method of implementing the emission of the electromagnetic wave 18 to the electromagnetic wave emitting device 10 installed in the area 58 where the start of the first event is expected at the first start time before the first expected time is included. But it's okay.

FIG. 14 is an exemplary hardware configuration diagram for explaining hardware that realizes information processing executed in each device according to each embodiment. FIG. 14 illustrates the processing apparatus used in the embodiment. The processing device is provided in the electromagnetic wave emitting device 10, the information processing device 20, or the vehicle 55, and executes various information processing. The processing device includes, for example, a CPU (Central Processing Unit) 311, a communication I / F 312, an input / output I / F 313, a GUI (Graphical User Interface) 314, a ROM (Read Only Memory) 315, a RAM (Random Access Memory) 316, and an HDD. (Hard Disk Drive) 317 and the like are included. The various processes described above (for example, processes by the first information acquisition means 31, the second information acquisition means 32, the first motion control means 41, the second motion control means 42, the third motion control means 55c, etc.) are performed by, for example, a CPU. It is done in. The plurality of elements included in the processing device can communicate with each other, for example, in the communication path 318. Communication may be wired or wireless.

The embodiment may include a recording medium in which a program for implementing the above operation on a computer is recorded. As the recording medium according to the embodiment, for example, the computer is made to acquire the first information 81 including the first estimated time indicating the expected time when the first event related to the weather is started in one or a plurality of areas, and the acquired first. Based on the information 81, a program for emitting electromagnetic waves to the electromagnetic wave emitting device 10 installed in the area where the start of the first event is expected is recorded at the first start time before the first expected time.

According to the embodiment, it is possible to provide a road management system that can easily maintain a good road condition.

Hereinafter, embodiments of the present invention have been described with reference to specific examples. However, the present invention is not limited to these specific examples. For example, the present invention may be appropriately selected from a range known to those skilled in the art with respect to specific configurations of the information processing device, the electromagnetic wave emitting device, the information acquisition means, the operation control means, etc. included in the road management system. Is included in the scope of the present invention as long as the same effect can be obtained.

Further, a combination of any two or more elements of each specific example to the extent technically possible is also included in the scope of the present invention as long as the gist of the present invention is included.

In addition, all road management systems that can be appropriately designed and implemented by those skilled in the art based on the road management system described above as an embodiment of the present invention are also within the scope of the present invention as long as the gist of the present invention is included. Belongs to.

In addition, in the scope of the idea of the present invention, those skilled in the art can come up with various modified examples and modified examples, and it is understood that these modified examples and modified examples also belong to the scope of the present invention. ..

10, 10a, 10b ... Electromagnetic wave emitting device, 11 ... Ejecting part, 11E ... Electromagnetic wave emitting element, 11H ... Upper part, 11L ... Lower part, 15 ... Lighting device, 15L ... Illuminating light, 18 ... Electromagnetic wave, 20 ... Information processing Device, 25 ... Storage unit, 26 ... Management information, 31, 32 ... First and second information acquisition means, 41, 42 ... First and second operation control means, 41s, 42s ... First and second control signals, 43s ... control signal, 50 ... road, 50A-50C ... 1st to 3rd lanes, 50S ... side, 50SB ... roadside zone, 50T ... center, 50e ... edge, 55 ... car, 55A ... electromagnetic emission element, 55B ... Position information acquisition means, 55C ... Third operation control means, 55EM ... Electromagnetic wave, 58, 58a, 58b ... Area, 80 ... Meteorological information provider, 81 ... First information, 81G ... Degree information, 82 ... Second information , 87 ... Confirmer, 88 ... Terminal, 92 ... Side wall, 110, 120 ... Road management system, A-ID ... Area information, H11, H15, H18 ... Height, J-ID ... Section information, L-ID ... Electromagnetic wave Exit device information, R-ID ... Road name information

Claims (17)

A road management system in which one or more information processing devices and a plurality of electromagnetic wave emitting devices installed in a plurality of areas and emitting electromagnetic waves toward a road are communicably connected.
A first information acquisition means for acquiring first information including a first estimated time indicating an estimated time when a first event related to weather starts in one or a plurality of areas.
Based on the first information acquired by the first information acquisition means, the electromagnetic wave emitting device installed in the area where the start of the first event is expected at the first start time before the first expected time. On the other hand, the first operation control means for executing the first operation for emitting electromagnetic waves,
Road management system with. The first operation control means includes the first information acquired by the first information acquisition means and management information stored in a storage unit for managing an area in which each of a plurality of electromagnetic wave emitting devices is installed. The road management system according to claim 1, which identifies an electromagnetic wave emitting device installed in an area where the start of the first event is expected based on the above. The first event is snowfall,
The road management system according to claim 1 or 2, wherein the electromagnetic wave includes infrared rays or far infrared rays. The first event is snowfall,
The road management system according to any one of claims 1 to 3, wherein the electromagnetic wave includes visible light. The road management system according to claim 3 or 4, wherein the first start time is a time predetermined time before the first expected time. The first information acquisition means includes the first information, or separately from the first information, acquires degree information regarding the degree of the first event in the area.
The road management system according to any one of claims 1 to 5, wherein the first motion control means controls the first motion to be executed by the electromagnetic wave emitting device based on the degree information. The road management system according to any one of claims 1 to 6, further comprising the road containing a heat generating material that generates heat by being irradiated with the electromagnetic wave emitted from the electromagnetic wave emitting device. The electromagnetic wave emitting device is installed on the side of the road and is installed.
The road management system according to any one of claims 1 to 7, wherein at least a part of the electromagnetic wave travels from the side portion toward the central portion of the road. The road includes a first lane through which vehicles pass.
The invention according to any one of claims 1 to 8, wherein the height of the electromagnetic wave from the surface of the road at the end of both ends of the first lane that is closer to the electromagnetic wave emitting device is 30 cm or less. Road management system. The electromagnetic wave emitting device is
The electromagnetic wave is emitted from the first position toward the first region of the road.
Claims 1 to 9 for emitting the electromagnetic wave from a second position lower than the first position toward a second region of the road located farther than the first region from the electromagnetic wave emitting device. The road management system described in any one of the above. Further equipped with a lighting device capable of emitting illumination light toward the road,
The range in which the road is irradiated with the electromagnetic wave by the electromagnetic wave emitting device of 1 is wider than the range in which the illumination light is irradiated to the road by the lighting device of 1, according to any one of claims 1 to 10. The road management system described. Further equipped with a lighting device capable of emitting illumination light toward the road,
The road management system according to any one of claims 1 to 11, wherein the height of the electromagnetic wave emitting device is lower than the height of the lighting device when the road is used as a reference. A second information acquisition means for acquiring the second information including the second event, which is issued when the first event ends, and
Based on the second information acquired by the second information acquisition means, the second operation control for causing the electromagnetic wave emitting device executing the first operation to execute the second operation for stopping the first operation. Means and
The road management system according to any one of claims 1 to 12. A road management system that further includes a terminal possessed by a confirmer who confirms the condition of the road.
The road management system according to claim 13, wherein the second information acquisition means acquires the second information transmitted based on the input information input by the confirmer via the terminal. The first event is the occurrence of fog.
The road management system according to claim 1, wherein the electromagnetic wave is visible light including a wavelength of 580 nm or more. The road management system according to any one of claims 1 to 15, wherein the road management system emits electromagnetic waves toward the road from a vehicle passing through the area where the first event is expected to start. Acquire the first information including the first predicted time indicating the predicted time when the first event related to the weather starts in one or more areas.
Based on the acquired first information, an electromagnetic wave is emitted to an electromagnetic wave emitting device installed in an area where the start of the first event is expected at a first start time before the first expected time. Road management method.

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