JP2023022134A - Driving support device and driving support method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve both of convenience in automatic driving and pleasure in manual driving.

SOLUTION: A driving support device 10 comprises: a vehicle information acquisition section 12 for acquiring vehicle information including information related to an operation state of an automatic driving function of a vehicle; a route information acquisition section 14 for acquiring information related to a scheduled travel route on which the vehicle travels; a recommendation zone determination section 16 for determining a driving load of the travel route based on at least one of the road type of the travel route, the number of lanes, a road width, the number of right/left turns, the number of branches, the number of confluences, the number of intersections, the number of signals, and the number of temporary stop signs, so as to determine a manual driving recommendation zone included in the travel route according to the driving load; and a driving changeover proposal section 18 for proposing, to a user of the vehicle, changeover into the manual driving by the operation release of the automatic driving function in the manual driving recommendation zone, when the automatic driving function is being operated and also the manual driving recommendation zone is included in the travel route.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2023,JPO&INPIT

Description

The present invention relates to a driving assistance device and a driving assistance method.

2. Description of the Related Art In recent years, automatic driving technology that automatically controls the running of a vehicle without depending on the driver's operation has been spreading. On the other hand, it may not be possible to automatically control the entire travel route due to reasons such as legal regulations and technical restrictions, and it may be necessary to switch from automatic operation to manual operation in the middle of the route. In order to appropriately switch from automatic operation to manual operation, for example, switching is performed at points other than sections where it is difficult to take over to manual operation (see, for example, Patent Literature 1).

JP 2017-165411 A

Even if automatic driving technology becomes widespread, there may still be a need for moderately enjoyable manual driving by the driver. However, when switching to manual operation is performed only for sections where automatic operation is impossible or inappropriate, manual operation can only be performed in situations where the burden on the driver is heavy.

SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances described above, and an object of the present invention is to provide a driving support function capable of achieving both the convenience of automatic driving and the enjoyment of manual driving.

A driving support device according to one aspect of the present invention includes a vehicle information acquisition unit that acquires vehicle information including information on the operating state of an automatic driving function of a vehicle, and a route information acquisition unit that acquires information on a travel route that the vehicle is scheduled to travel. and at least one of the road type, number of lanes, width, number of turns, number of junctions, number of merges, number of intersections, number of traffic lights and number of stop signs on the route. A recommended section determination unit that determines the driving load and determines the manual driving recommended section included in the driving route according to the driving load, and when the automatic driving function is in operation and the driving route includes the manual driving recommended section and a driving switching proposal unit that proposes to the user of the vehicle switching to manual driving by deactivating the automatic driving function in the manual driving recommended section.

It should be noted that arbitrary combinations of the above-described constituent elements and mutual replacement of the constituent elements and expressions of the present invention in methods, devices, systems, etc. are also effective as aspects of the present invention.

ADVANTAGE OF THE INVENTION According to this invention, the driving assistance function which can make both the convenience by automatic driving and the pleasure by manual driving compatible can be provided.

1 is a block diagram showing a functional configuration of a driving assistance device according to an embodiment; FIG. It is a figure which shows the example of a display of the selection screen of the manual operation recommendation area. FIG. 5 is a diagram showing a display example of a screen that suggests switching to manual operation. FIG. 5 is a diagram showing a display example of a screen for confirming switching to manual operation. It is a figure which shows the example of a display of the screen which proposes switching to automatic operation. 4 is a flow chart showing the flow of a driving assistance method according to the embodiment;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. Specific numerical values and the like shown in these embodiments are merely examples for facilitating understanding of the invention, and do not limit the invention unless otherwise specified. In the present specification and drawings, elements having substantially the same functions and configurations are denoted by the same reference numerals to omit redundant description, and elements that are not directly related to the present invention are omitted from the drawings. do.

Before describing this embodiment in detail, an overview will be given. This embodiment is a driving support device provided in a vehicle having an automatic driving function. When the automatic driving function of the vehicle is in operation and the driving route of the vehicle includes a recommended manual driving section that satisfies a predetermined condition, the driving support device proposes to the user to deactivate the automatic driving function in the recommended manual driving section. do. Here, the "recommended manual driving section" refers to a section in which the driver can enjoy manual driving while feeling an appropriate driving load. According to the present embodiment, by proposing switching from automatic driving to manual driving in a section where manual driving can be enjoyed, the driver can enjoy the convenience of automatic driving and enjoy manual driving moderately. can provide opportunities.

"Automatic driving function" in this specification refers to, for example, a function of level 1 or higher defined in J3016 of SAE (Society of Automotive Engineers), and controls at least one of accelerator, steering and brake on the system side It refers to the function to Therefore, the "automatic driving function" in this specification also includes driving support functions such as adaptive cruise control (ACC) and lane keeping assist (LKAS). In addition, the "automatic driving function" in this specification may be regarded as a function of level 3 or higher that controls all of the accelerator, steering and brakes on the system side, and during the operation of the automatic driving function, all vehicle control is at least It may be possible to leave it temporarily to the system side.

On the other hand, "manual driving" as used herein refers to a state in which the driver at least partially controls all of the accelerator, steering and brakes. Therefore, "manual driving" may include not only the state of level 0 of SAEJ3016, but also the state of using at least partially the "driving support function" defined in level 1 or level 2. In other words, a state in which some of the "driving support functions" are not used is defined as "manual driving" in this specification. For example, during manual driving, driving assistance functions such as forward collision warning, lane departure warning, pedestrian detection, and traffic sign recognition may be activated. Manipulation may be partially supported. In addition, the driver may control the operation of the accelerator and the steering while continuing the operation of the automatic braking function for collision avoidance.

FIG. 1 is a block diagram schematically showing the functional configuration of the driving assistance device 10. As shown in FIG. Each functional block shown in the figure can be realized by hardware such as a computer CPU, memory, and other elements and mechanical devices, and is realized by software such as a computer program. It is drawn as a functional block to be realized. Therefore, those skilled in the art will understand that these functional blocks can be implemented in various ways by combining hardware and software.

The driving assistance device 10 is connected to various devices mounted on the vehicle via an in-vehicle network 48 . The in-vehicle network 48 is connected to the input device 22, the display device 24, the speaker 26, the recording device 28, the navigation device 30, the in-vehicle camera 32, the in-vehicle sensor 34, the wireless communication device 36, the automatic driving ECU 38, the vehicle control ECU 40, and the like. . Before describing the functional configuration of the driving assistance device 10 in detail, peripheral devices will be described.

The input device 22 is a device that receives an operation input from a user such as a driver. The input device 22 is attached, for example, to the center console, dashboard, or steering wheel of the vehicle. The input device 22 may be composed of buttons or switches that are manually operated by the user, or may be composed of a touch panel or the like. Input device 22 may be configured to accept a user's voice input and may include, for example, a microphone.

The display device 24 is a display device such as a liquid crystal display or a head-up display, and is attached to the center console or dashboard of the vehicle. The speaker 26 outputs audio for user-oriented guidance, warning, and alertness. The recording device 28 records various setting information of in-vehicle equipment, images captured by the in-vehicle camera 32, and the like. The recording device 28 includes, for example, a magnetic disk such as a hard disk, a semiconductor memory such as a flash memory, and the like. The recording device 28 may be provided in an external device such as a smart phone, a tablet, or a server connected by wireless communication such as Wi-Fi (registered trademark).

The navigation device 30 has map information and manages the travel route of the vehicle. The navigation device 30 proposes a travel route from the current location to the destination, and provides route guidance according to the travel route selected by the user. The navigation device 30 causes the display device 24 to display a map screen showing the vicinity of the current vehicle location and a map screen showing a planned route from the current location to the destination.

The vehicle-mounted camera 32 is configured to capture an image of the surroundings of the vehicle, for example, to capture an image of the front of the vehicle. The vehicle-mounted camera 32 may be configured to capture only the exterior of the vehicle, or may be configured to capture both the exterior and interior of the vehicle. A plurality of cameras may be mounted on the vehicle, and for example, each of the plurality of cameras may image the front, rear, and sides of the vehicle.

The in-vehicle sensor 34 is a device for acquiring information about the vehicle and information about the surrounding conditions of the vehicle. Specific examples of the in-vehicle sensor 34 include a vehicle speed sensor, a steering angle sensor, an acceleration sensor, a gyro sensor, a radar sensor, a lidar (LiDAR; Light Detection and Ranging), and a position information sensor (GPS sensor). not to be

The radio communication device 36 is a device for receiving road traffic information distributed by FM multiplex broadcasting, radio signals or optical signals. configured to receive a signal; The wireless communication device 36 may be configured to acquire information on roads around the vehicle and other vehicles through road-to-vehicle communication or vehicle-to-vehicle communication, or may be configured to acquire information by wirelessly connecting to a network including the Internet. may

The automatic driving ECU 38 is a control device that provides an automatic driving function of the vehicle. The automatic driving ECU 38 executes processing for automatically controlling driving of the vehicle based on information acquired from various devices connected to the in-vehicle network 48 . The automatic driving ECU 38 identifies the traveling route of the vehicle based on the information obtained from the navigation device 30, and the status of the vehicle and the surrounding conditions of the vehicle based on the information obtained from the on-vehicle camera 32, the on-vehicle sensor 34, and the wireless communication device 36. , and controls the operation amount of accelerator, brake, steering, etc. via the vehicle control ECU 40 .

The automatic driving ECU 38 may operate to provide an automatic driving function of level 3 or higher, or may operate to provide a driving support function of level 2 or lower. The automatic driving ECU 38 not only controls the behavior of the vehicle via the vehicle control ECU 40 , but may also issue warnings and alerts to the driver via the display device 24 and the speaker 26 . The automatic driving ECU 38 cancels the operation of the automatic driving function by stopping the vehicle or notifying the driver of switching to manual driving when an event that prevents automatic driving from continuing occurs while the automatic driving function is in operation. do.

The vehicle control ECU 40 is a control device for controlling the behavior of the vehicle, and manages the operations of an engine ECU 42, a brake ECU 44, a steering ECU 46, and the like, which respectively control driving, braking and steering of the vehicle. The vehicle control ECU 40 controls the behavior of the vehicle both when the automatic driving function is activated and when the automatic driving function is not activated (that is, during manual driving).

Next, the functional configuration of the driving assistance device 10 will be described in detail. The driving support device 10 includes a vehicle information acquisition unit 12 , a route information acquisition unit 14 , a recommended section determination unit 16 , a driving switching proposal unit 18 and an image recording unit 20 .

The vehicle information acquisition unit 12 acquires information about the vehicle and information about the surroundings of the vehicle from the vehicle-mounted camera 32, the vehicle-mounted sensor 34, the wireless communication device 36, the automatic driving ECU 38, the vehicle control ECU 40, and the like. The vehicle information acquisition unit 12 acquires, as information about the vehicle, information such as the speed, acceleration, accelerator operation amount, brake operation amount, steering amount, vehicle attitude, operation state of the automatic driving function, etc. of the own vehicle. The vehicle information acquisition unit 12 acquires information such as weather, road surface conditions, the number of other vehicles, relative speeds, etc., as information about the surroundings of the vehicle. The vehicle information acquisition unit 12 may acquire information about the driver's condition based on an image of the vehicle-mounted camera 32 that captures the driver.

The route information acquisition unit 14 acquires information about the travel route of the vehicle from the navigation device 30 . The route information acquisition unit 14 acquires information about the road on which the vehicle is currently traveling and information about roads included in the planned route to the destination set in the navigation device 30 . For example, it acquires information such as road type, area, number of lanes, width, curve curvature, slope, etc., as well as information such as the number of right/left turns and branches included in the planned route, and the number of traffic lights and stop signs. The route information acquisition unit 14 may acquire travel route regulation information, congestion information, and the like through the wireless communication device 36 .

The recommended section determining unit 16 extracts candidates for the "manual driving recommended section" included in the travel route of the vehicle, and determines the section in which manual driving is suggested to the driver. The recommended section determination unit 16 extracts sections where the driver can enjoy manual driving while feeling an appropriate driving load as candidates for the "recommended manual driving section". In other words, the recommended section determination unit 16 selects a section where driving is considered monotonous due to a low driving load and a section where driving is considered to be tiring due to a high driving load as a manual driving recommended section. Excluded from the candidates, the section considered to have a moderate driving load is used as a candidate for the section recommended for manual operation.

The recommended section determining unit 16 divides the travel route into a plurality of sections, and evaluates the level of the driving load of each section in a plurality of stages. The recommended section determination unit 16, for example, determines the height of the driving load of each section in three or more stages, for example, low load (first stage), medium load (second stage), high load (third stage) classified into three stages. The method of determining the section for determining the driving load is not particularly limited, but for example, the section can be set for each fixed distance (eg, about 500 m to 1 km) or travel time (about 5 minutes to 10 minutes). A section between nodes set in the map information of the navigation device 30 may be set as a section for determining the driving load.

The recommended section determination unit 16 may determine the level of driving load according to the type of road, the number of lanes, and the width of each section. For example, wide expressways and major national roads with two or more lanes each way are judged to have a low load, national roads and prefectural roads with one lane one way are judged to have a medium load, and narrow city roads and unpaved roads are judged to have a medium load. may be determined as high load. The recommended section determination unit 16 may determine the driving load according to the area of each section. , an area with a large traffic volume of vehicles and people, such as a rural area, may be determined to have a medium load or a low load.

The recommended section determination unit 16 may determine the driving load of the travel route according to the number of right/left turns, branches, and mergings included in each section, and the number of intersections, traffic lights, or stop signs. For example, the number of right and left turns, branches and mergings included in the reference travel distance (eg 5 km) and travel time (eg 10 minutes), the number of intersections, traffic lights or stop signs is a predetermined reference value (eg 2 to about 5) or less, it may be determined as medium load or low load, and when it exceeds a predetermined reference value, it may be determined as high load.

The recommended section determining unit 16 may determine the driving load according to the curvature and gradient of the curve included in each section. For example, when at least one of the curvature and gradient of the curve is less than a predetermined lower limit over the entire section, it is determined that the load is low, and at least one of the curvature and gradient of the curve exceeds the predetermined upper limit in at least a part of the section. It may be determined that the load is high if it exceeds, and that it is medium load otherwise. In other words, even if at least one of the curvature and gradient of the curve is less than or equal to a predetermined upper limit value over the entire section and there is a portion where at least one of the curvature and gradient of the curve is greater than or equal to a predetermined lower limit value, the load is determined to be medium load. good. For example, the lower limit of the curvature of the curve is a radius of curvature of 500 m, and the upper limit of the curvature of the curve is a radius of curvature of 300 m. Also, the lower limit of the gradient is 5% and the upper limit of the gradient is 10%.

The recommended section determination unit 16 may select a candidate for a section recommended for manual driving when sections in which the driving load is moderate continue over a certain distance or time. For example, if the driving load is continuously low or medium in a section of 10 km or more, 20 km or more, or one or more sections corresponding to a running time of 30 minutes or 1 hour, it may be a candidate for the recommended manual operation section. . As a result, it is possible to prevent a state in which driving cannot be fully enjoyed as a result of passing through the recommended manual driving section in several minutes.

When determining the height of the driving load based on the plurality of determination conditions, the recommended section determination unit 16 sets the corresponding section to a low load when all of the plurality of determination conditions are low load, and determines the load of the plurality of determination conditions. If one of the sections has a high load, the corresponding section may be designated as a high load, and the other section may be designated as a medium load. In addition, when there are a predetermined number (for example, two items) or more of items with a high load among a plurality of determination conditions, the corresponding section may be set as a high load.

Note that the reference value for determining the driving load on the travel route may be changeable by user settings. For example, a plurality of modes such as comfort mode, drive mode, and sport mode may be prepared, and the reference value for determining the driving load may be changed in each mode. In addition, the user may be allowed to select which of a plurality of determination conditions for determining the driving load should be enabled and which should be disabled.

If a road registered as a course suitable for driving in the map information is included in the travel route of the vehicle, the recommended section determination unit 16 may set the course as a candidate for the recommended manual driving section. In addition, if there is a travel route that passes near a point registered as a scenic spot in the map information, the section near that point may be a candidate for the recommended manual driving section.

When there are a plurality of candidates for the recommended manual driving section, the recommended section determination unit 16 may extract only a part of the plurality of candidate sections as the recommended manual driving section. Alternatively, a plurality of candidates may be presented to the user so that the user can select one of them.

FIG. 2 shows a display example of a manual driving recommended section selection screen, in which a planned travel route 56 from a current location 52 to a destination 54 is displayed on a map screen by the navigation device 30 . A plurality of recommended manual operation sections 58a, 58b, 58c are superimposed on the map screen along the planned travel route 56, and symbols "A", "B", and "C" for selecting each section are attached. there is In addition, the characteristics of each section are shown at the bottom left of the screen. A description of "many mountain road routes" is displayed. In addition, information such as the distance of each section and the scheduled travel time may be displayed. By displaying such a route selection screen, the user may be allowed to select any one or a plurality of recommended manual driving sections.

When the vehicle enters a section recommended for manual driving while the automatic driving function is in operation, the driving switching proposal unit 18 proposes switching to manual driving by deactivating the automatic driving function to the user. For example, when the manual operation recommended section 58a of "Section A" in FIG. 2 is selected by the user, the user is asked whether switching to manual operation is possible while traveling in the manual operation recommended section 58a.

FIG. 3 shows a display example of a screen that suggests switching to manual operation, and shows an example of the screen that is displayed when the vehicle's current location 52 is near the entrance of the recommended section A. FIG. The driving switch suggesting unit 18 displays the message "You have entered the recommended section A. Do you want to switch to manual driving?" The driving switching proposal unit 18 may output a message confirming switching to manual driving from the speaker 26 . After that, when the user gives an instruction to cancel the operation of the automatic driving function, the driving switching proposal unit 18 causes the automatic driving ECU 38 to cancel the operation of the automatic driving function, and the user does not give an instruction to cancel the automatic driving function. In this case, the automatic driving ECU 38 is made to continue the operation of the automatic driving function.

The driving switching proposal unit 18 may propose switching to manual driving only when the recommended manual driving section during travel satisfies a predetermined condition. For example, it may be determined whether or not to propose the cancellation of the automatic driving function based on the latest regulation information, traffic congestion information, and road environment such as weather for the recommended manual driving section. The latest road environment information may be obtained through the wireless communication device 36, or may be obtained by analyzing information from the vehicle-mounted camera 32 or the vehicle-mounted sensor 34. FIG.

The driving switching proposal unit 18 may stop proposing cancellation of the automatic driving function when a "specific event" in which manual driving cannot be recommended occurs in the manual driving recommended section during travel. Examples of "specific events" in which manual driving cannot be recommended include the occurrence of traffic jams, bad weather such as strong winds, heavy rain, and fog, poor visibility due to nighttime, and lane restrictions due to construction work or accidents. Since the driving load increases when such a specific event occurs, switching to manual operation may not be proposed for the manual driving recommended section that accompanies the specific event. In addition, the necessity of switching to manual operation may be confirmed by notifying the user of these specific events when switching to manual operation is proposed.

The driving switching proposal unit 18 may propose switching to manual driving after the specific event that has occurred in the manual driving recommended section during travel is resolved. For example, a switch to manual operation may be proposed at the timing when traffic congestion ahead of the vehicle is resolved and the traveling speed of other vehicles ahead of the vehicle or the traveling speed of the own vehicle increases. In this case, the user may be notified that the specific event has been resolved when the cancellation of the automatic driving function is proposed, and the necessity of switching to manual driving may be confirmed. For example, a message such as "Congestion has been cleared. Do you want to switch to manual driving?"

When the user instructs to cancel the automatic driving function in a section different from the manual driving recommended section, the driving switching proposal unit 18 notifies the user that the section currently being driven is not the manual driving recommended section, and automatically You may reconfirm whether it is necessary to cancel the driving function. In addition, if the planned driving route of the vehicle includes a section where manual driving is recommended, the user is notified of at least one of the driving distance and driving time to the next recommended manual driving section, and the user is asked again whether the automatic driving function needs to be canceled. You can check.

FIG. 4 is a display example of a screen for confirming switching to manual operation, and shows an example of the screen displayed when the current vehicle location 52 is before the recommended section A. As shown in FIG. As shown, the current location 52 is before the recommended section A and the remaining distance to the next recommended section A is 7 km, and the necessity of switching to manual operation is confirmed. In this way, by notifying whether the next recommended section is approaching or not, it is possible to assist the user in deciding whether to switch to manual operation immediately or wait for a while before switching to manual operation.

FIG. 5 is a display example of a screen that suggests switching to automatic driving, and shows an example of the screen that is displayed when the vehicle's current location 52 is near the exit of the recommended section A. As shown in FIG. The driving switching proposal unit 18 proposes switching to automatic driving to the user when the vehicle passes through the recommended manual driving section with the automatic driving function deactivated. The driving switching proposal unit 18 displays the message "You have passed the recommended section A. Do you want to switch to automatic driving?" After that, when the user instructs to operate the automatic driving function, the driving switching proposal unit 18 causes the automatic driving ECU 38 to start operating the automatic driving function. The automatic driving ECU 38 is made to continue the cancellation state of the automatic driving function.

The driving switch suggesting unit 18 may suggest activation of the automatic driving function to the user when the vehicle has traveled the recommended manual driving section for a predetermined distance or for a predetermined period of time with the automatic driving function deactivated. For example, we propose to switch from manual driving to automated driving when driving continuously in a section recommended for manual driving over a distance (for example, about 20 km to 30 km) or time (for example, about 1 hour to 2 hours) where there is concern about the accumulation of driving load. You may The predetermined distance and the predetermined time at this time may be set to arbitrary values by user operation. After that, the driving switching proposal unit 18 restarts the operation of the automatic driving function when the user gives an instruction to restart the operation of the automatic driving function, and when the user does not give an instruction to restart the automatic driving function, the automatic driving To continue the release state of the function.

The driving switching proposal unit 18 activates the automatic driving function when the vehicle is in a state where the driving load is considered to be high while traveling in the manual driving recommended section with the automatic driving function deactivated. You can suggest it to the user. For example, when the amount of accelerator operation, the amount of brake operation, the amount of steering, etc., exceeds predetermined reference values, it may be determined that the driving load is excessively high, and the discontinuation of manual operation may be proposed. In addition, when the vehicle speed, acceleration, vehicle posture, etc. exceed a predetermined reference range, it may be determined that the vehicle is in a caution-required state and the manual operation may be stopped.

The image recording unit 20 causes the recording device 28 to record an image captured by the in-vehicle camera 32 while the vehicle is traveling in the manual driving recommended section while the automatic driving function is deactivated. The image recording unit 20 records the scenery outside the vehicle and the state of driving inside the vehicle during manual driving in the recommended section as images or moving images. The image recording unit 20 may upload images and moving images captured during manual driving in the recommended section to an external server or the like via the wireless communication device 36 . In an embodiment, the image recording unit 20 may not be provided in the driving assistance device 10, and the image may not be recorded while the vehicle is running.

FIG. 6 is a flow chart showing the flow of the driving support method according to the embodiment. Based on the information acquired by the vehicle information acquisition unit 12 and the route information acquisition unit 14, the recommended section determination unit 16 determines a recommended manual driving section that satisfies a predetermined condition and is included in the travel route (S10). If the vehicle is operating the automatic driving function (Y of S12) and the vehicle is traveling in the manual driving recommended section (Y of S14), the driving switching proposal unit 18 instructs the user to cancel the automatic driving function. Propose (S16). If the user gives an instruction to cancel the operation of the automatic driving function (Y of S18), the driving switching proposal unit 18 cancels the operation of the automatic driving function (S20). If the automatic driving function is not in operation (N of S12) or if the vehicle is not traveling in the manual driving section (N of S14), the processing of S16 to S20 is skipped. Moreover, when the user does not give an instruction to deactivate the automatic driving function (N of S18), the process of S20 is skipped.

According to the present embodiment, even when the automatic driving function of the vehicle is in operation, it is possible to provide the driver with an opportunity to enjoy manual driving while feeling a moderate driving load. By proposing switching to manual driving in the "recommended manual driving section" where the driver can enjoy manual driving, manual driving after switching becomes monotonous and excessive driving burden is imposed. Therefore, it is possible to prevent a situation in which driving cannot be fully enjoyed. In addition, by proposing switching to automatic driving at the end of the recommended manual driving section, it is possible to prevent an excessive driving load from accumulating on the driver. As a result, it is possible to provide a driving support function capable of achieving both the convenience of automatic driving and the enjoyment of manual driving.

Although the present invention has been described with reference to the above-described embodiments, the present invention is not limited to the above-described embodiments. is also included in the present invention.

In the above embodiment, the case where the driving support device 10 is a control device different from the navigation device 30 and the automatic driving ECU 38 has been described. In a modification, the functions realized by the driving assistance device 10 may be realized by another device such as the navigation device 30 or the automatic driving ECU 38 .

In the embodiment described above, the case where the driving support device 10 is mounted on a vehicle has been described. In a modification, part of the functions realized by the driving support device 10 may be realized by an external device provided outside the vehicle. For example, the recommended section determining unit may be realized by an external device. In this case, information about the travel route of the vehicle may be transmitted to the device outside the vehicle through the wireless communication device 36, and the recommended manual driving section may be determined in the device outside the vehicle. After that, information on the determined recommended manual driving section is acquired from the external device through the wireless communication device 36, and the driving switching proposal unit 18 proposes switching to manual driving based on the acquired information on the recommended manual driving section. good.

10... Driving support device, 12... Vehicle information acquisition unit, 14... Route information acquisition unit, 16... Recommended section determination unit, 18... Driving switching proposal unit.

Claims (3)

A vehicle information acquisition unit that acquires vehicle information including information about the operating state of the automatic driving function of the vehicle;
a route information acquisition unit that acquires information about a travel route that the vehicle is scheduled to travel;
Driving the travel route based on at least one of the road type, the number of lanes, the width, the number of right and left turns, the number of branches, the number of merging, the number of intersections, the number of traffic lights, and the number of stop signs of the travel route. A recommended section determination unit that determines a load and determines a recommended manual operation section included in the travel route according to the driving load ;
When the automatic driving function is in operation and the recommended manual driving section is included in the travel route, a proposal is made to the user of the vehicle to switch to manual driving by deactivating the automatic driving function in the recommended manual driving section. A driving support device, comprising: a driving switching proposal unit. The driving switching proposal unit includes at least one of the number of lanes, width, number of right and left turns, number of branches, number of merges, number of intersections, number of traffic lights, and number of stop signs, and the criteria set by the user. The driving load is divided into a plurality of degree stages and determined by comparing the value and the driving load, and the degree stage of the driving load is determined to be in a predetermined middle stage among the plurality of degree stages. A claim characterized in that, when a section continues over a certain distance or time or more, switching to manual driving by deactivating the automatic driving function in the manual driving recommended section is proposed to the user of the vehicle. Item 1. The driving support device according to item 1. the computer
obtaining vehicle information including information about the operating state of an automated driving function of the vehicle;
a step of obtaining information about a travel route that the vehicle is scheduled to travel;
Driving the travel route based on at least one of the road type, the number of lanes, the width, the number of right and left turns, the number of branches, the number of merging, the number of intersections, the number of traffic lights, and the number of stop signs of the travel route. a step of determining a load and determining a recommended manual operation section included in the travel route according to the operating load ;
When the automatic driving function is in operation and the recommended manual driving section is included in the travel route, a proposal is made to the user of the vehicle to switch to manual driving by deactivating the automatic driving function in the recommended manual driving section. A driving support device characterized by executing a step of:

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