JP2015184721A - automatic operation support device, automatic operation support method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic operation support device, an automatic operation support method and a program, which enable a lane change by automatic operation on a road including a lane change prohibition line.SOLUTION: The automatic operation support device is provided with: road information acquisition means for acquiring road information that includes information on a lane change prohibition line of the road on which a self-vehicle travels; lane change determination means for determining, during automatic operation, whether or not to perform a lane change at a guide branch point present ahead of the self-vehicle; road determination means for determining, on the basis of the road information, whether or not the self-vehicle travels on a road that includes the lane change prohibition line, if it is determined by the lane change determination means that a lane change is performed at the guide branch point; and start point setting means for setting a lane change start point, at which the self-vehicle starts the lane change, at the end of the lane change prohibition line in the travelling direction of the self-vehicle, if it is determined by the road determination means that the self-vehicle travels on the road that includes the lane change prohibition line.

Description

  The present invention relates to an automatic driving support device, an automatic driving support method, and a program that support automatic driving.

In recent years, various proposals have been made regarding techniques for supporting driving of a vehicle by a driver.
For example, in the driving support device described in Patent Document 1, when it is determined that the start point or end point of the lane change prohibition section exists within a predetermined distance ahead of the travel point of the host vehicle, information on the start point or end point is notified. To do. Thereby, the driver who drives the own vehicle can recognize the existence of the start point or the end point of the lane change prohibition section in advance. Therefore, the driver can recognize in advance the timing at which the lane change cannot be performed or the timing at which the lane change can be performed, and can appropriately travel in consideration of the lane change.

JP2013-19833A

  However, the driving support apparatus described in Patent Document 1 only teaches the driver of the existence of a lane change prohibition section. Therefore, when an automatic driving system that changes lanes is assumed, it is not disclosed that a lane change is performed in a section outside a lane change prohibition section in automatic driving on a road where a lane change prohibition section exists. There is.

  Accordingly, the present invention has been made to solve the above-described problems, and an automatic driving support device and an automatic driving that can change lanes by automatic driving on a road where a lane change prohibition line exists. Provide support methods and programs.

  In order to achieve the above object, an automatic driving support device (2) according to the present invention includes road information acquisition means (41) for acquiring road information including information on a lane change prohibition line of a road on which the host vehicle is traveling, and automatic driving. A lane change determination means (41) for determining whether or not to change the lane at a guidance branch point located in front of the host vehicle, and a lane change at the guidance branch point via the lane change determination means. Road determination means (41) for determining whether or not the host vehicle is traveling on a road on which the lane change prohibition line exists, based on the road information; If it is determined that the host vehicle is traveling on a road where the lane change prohibition line exists, the lane change of the host vehicle is changed to the end of the lane change prohibition line in the traveling direction of the host vehicle. Starting lane change starting point And set to start point setting means (41), characterized by comprising a.

  An automatic driving support method according to the present invention is an automatic driving support device comprising a control unit and road information acquisition means for acquiring road information including information on a lane change prohibition line of a road on which the vehicle travels. A lane change determination step for determining whether to change lanes at a guidance branch point located in front of the host vehicle during automatic driving, which is an automatic driving support method to be executed, which is executed by the controller. When it is determined in the lane change determination step that the lane change is performed at the guidance branch point, the own vehicle has the lane change prohibition line based on the road information acquired by the road information acquisition unit. A road determination step for determining whether or not the vehicle is traveling on the road; and if the vehicle is determined to be traveling on a road where the lane change prohibition line exists in the road determination step, the vehicle In the direction of travel A start point setting step of setting a lane change start point to the end of the lane change prohibition line starts lane change of the free-vehicle that, characterized by comprising a.

  Further, the program according to the present invention provides a computer having road information acquisition means for acquiring road information including information on a lane change prohibition line of a road on which the host vehicle is running, in front of the host vehicle during automatic driving. A lane change determination step for determining whether or not to change lanes at a guidance branch point located; and if it is determined in the lane change determination step that a lane change is to be made at the guidance branch point, the road information acquisition means A road determination step for determining whether the host vehicle is traveling on a road on which the lane change prohibition line exists based on the road information acquired by the step, and the host vehicle prohibits the lane change in the road determination step. If it is determined that the vehicle is traveling on a road with a line, a lane change start point for starting the lane change of the host vehicle is set at the end of the lane change prohibition line in the traveling direction of the host vehicle. A start point setting step, a program for execution.

  In the automatic driving support device, the automatic driving support method, and the program having the above-described configuration, when it is determined that the lane change is to be performed at the guidance branch point during the automatic driving, the vehicle has a road on which the lane change prohibition line exists. It is determined whether or not the vehicle is running. If it is determined that the host vehicle is traveling on a road where a lane change prohibition line exists, the lane for starting the lane change of the host vehicle at the end of the lane change prohibition line in the traveling direction of the host vehicle Set the change start point. As a result, it is possible to change the lane at a timing at which the lane change prohibition line is interrupted by automatic driving on a road where the lane change prohibition line exists.

It is a block diagram which shows an example of the structure regarding this invention in the own vehicle. It is a main flowchart which shows the "lane change assistance process" performed in a navigation apparatus. 3 is a sub-flowchart showing a sub-process of “space securing deceleration process” in FIG. 2. 3 is a sub-flowchart showing a sub-process of “space securing deceleration process” in FIG. 2. It is a figure which shows an example of the road distance from the own vehicle to a guidance branch point. It is explanatory drawing which shows an example of a lane change in case there is a side space. It is explanatory drawing which shows an example of a lane change in case there exists a side space but a lane change prohibition line exists. It is explanatory drawing which shows an example of a lane change when there is no side space. It is explanatory drawing which shows an example of a lane change when there is no side space and a lane change prohibition line exists. It is explanatory drawing which shows an example of a lane change in case the starting point of a lane change prohibition line exists in the near side of a lane change completion point.

  Hereinafter, an automatic driving support device, an automatic driving support method, and a program according to the present invention will be described in detail with reference to the drawings based on an embodiment in which a navigation device is embodied.

[Schematic configuration of own vehicle]
A schematic configuration of the host vehicle 1 according to the present embodiment will be described with reference to FIG. As shown in FIG. 1, the host vehicle 1 according to the present embodiment basically includes a navigation device 2 installed on the host vehicle 1 and a vehicle control ECU (Electronic Control Unit) 3.

  Here, the navigation device 2 is provided on the center console or panel surface of the interior of the host vehicle 1, and displays a map around the vehicle and a search route to the destination, and voice guidance regarding route guidance. Is provided. Then, the current position of the host vehicle 1 is specified by the GPS 31 or the like, and when the destination is set, a search for a plurality of routes to the destination and guidance according to the set guide route are displayed on the liquid crystal display 15 or This is performed using the speaker 16. The detailed configuration of the navigation device 2 will be described later.

  The vehicle control ECU 3 is an electronic control unit that controls the entire host vehicle 1. The vehicle control ECU 3 is connected to a navigation control unit 13 (to be described later) included in the navigation device 2. The vehicle control ECU 3 detects a vehicle-mounted display (vehicle-mounted LCD) 5 for displaying a speedometer, a human interface (HMI) 6, a front shooting camera 76A, a rear shooting camera 76B, a millimeter wave radar 77, and a vehicle speed. A vehicle speed sensor 51 and the like are connected.

  The vehicle control ECU 3 includes a CPU 71 as an arithmetic device and a control device, an internal storage device such as a RAM 72 used as a working memory when the CPU 71 performs various arithmetic processes, and a ROM 73 in which a control program and the like are recorded. Yes. Then, the CPU 71 creates an operation plan based on the route data of the guide route received from the navigation control unit 13 of the navigation device 2, the gradient information of each link on the route, the link length, and the like.

  The human interface 6 is provided with an automatic operation start button 61 for instructing the start of automatic operation. The driver can instruct the vehicle control ECU 3 to start automatic driving by pressing and turning on the automatic driving start button 61 on a toll road such as a national highway, an urban highway, and a general toll road. Here, the automatic operation start button 61 is switched between ON and OFF every time the user presses it. When the automatic operation start button 61 is turned on, the automatic operation control is started. On the other hand, when the automatic operation start button 61 is turned off during the execution of the automatic operation control, the automatic operation control is ended and the operation is switched to the manual operation depending on the operation of the driver. .

  When an instruction to start automatic driving is input, the CPU 71 switches from automatic driving to a toll road exit (rampway), toll gate (interchange), etc. on the guidance route based on the driving plan. Set the interruption timing to switch to manual operation by. For example, the CPU 71 sets the interruption timing at a position 300 m before the exit of the toll road. Then, the CPU 71 drives and controls an unillustrated engine device, brake device, electric power steering, and the like, and starts automatic operation until the interruption timing on the guide route.

  The front shooting camera 76A is attached in the vicinity of the rear mirror of the host vehicle 1, and is configured by a CCD camera or the like to capture the front of the host vehicle and outputs an image signal to the vehicle control ECU 3. The rear photographing camera 76B is attached to the rear end portion of the host vehicle 1, and is configured by a CCD camera or the like to photograph the rear of the host vehicle and outputs an image signal to the vehicle control ECU 3. The CPU 71 performs image processing on image signals input from the front shooting camera 76 </ b> A and the rear shooting camera 76 </ b> B, detects the relative positions of other vehicles existing around the host vehicle 1 with respect to the host vehicle 1, and the navigation device 2. Output to. Further, the CPU 71 performs image processing on image signals input from the front shooting camera 76 </ b> A and the rear shooting camera 76 </ b> B, detects a space around the host vehicle 1, and outputs the detected space to the navigation device 2.

  The millimeter wave radar 77 is attached to the center position of the front end of the host vehicle 1 and the center position of the rear end of the host vehicle 1, and the distance to other vehicles existing around the front of the host vehicle and the rear of the host vehicle and The relative speed with respect to the vehicle 1 is detected, and the distance to the detected other vehicle and the relative speed data of the other vehicle existing in the vicinity with respect to the own vehicle 1 are output to the vehicle control ECU 3. The CPU 71 is based on the distance from the millimeter wave radar 77 to the other vehicle in the vicinity and the relative speed data of the other vehicle in the vicinity with respect to the own vehicle 1. The relative position and relative speed of the vehicle 1 with respect to the host vehicle 1 are detected and output to the navigation device 2.

[Schematic configuration of navigation device]
Next, a schematic configuration of the navigation device 2 will be described. As shown in FIG. 1, the navigation apparatus 2 according to the present embodiment includes a current location detection processing unit 11 that detects the current position of the host vehicle, a data recording unit 12 that records various data, and input information. The navigation control unit 13 for performing various arithmetic processes, the operation unit 14 for receiving operations from the operator, the liquid crystal display (LCD) 15 for displaying information such as a map to the operator, and route guidance A communication device 17 that communicates with a speaker 16 that outputs voice guidance related to, etc., a road traffic information center (not shown), a map information distribution center (not shown), and the like via a mobile phone network, and the liquid crystal display 15 It is comprised from the touchscreen 18 with which the surface was mounted | worn.

Instead of the touch panel 18, a remote controller, joystick, mouse, touch pad, etc. may be provided.
A vehicle speed sensor 51 is connected to the navigation control unit 13. In addition, the navigation control unit 13 is electrically connected to the vehicle control ECU 3 so as to be able to acquire a relative positional relationship, a relative speed, and the like of another vehicle existing around the host vehicle 1 with respect to the host vehicle 1.

  Hereinafter, each component constituting the navigation device 2 will be described. The current position detection processing unit 11 includes a GPS 31 and the like, and includes the current position of the own vehicle 1 (hereinafter referred to as “own vehicle position”), the own vehicle direction, The travel distance, elevation angle, etc. can be detected. For example, it is possible to detect the turning speed of the three axes by the gyro sensor, and to detect the azimuth (horizontal direction) and the traveling direction of the elevation angle.

  Further, the communication device 17 can receive the latest traffic information and weather information distributed from a probe center, a road traffic information center, and the like (not shown) at predetermined time intervals (for example, every five minutes). It is configured. The “traffic information” is, for example, detailed information related to traffic information such as travel time of each link, road traffic information regarding road traffic congestion, traffic regulation information due to road construction, building construction, and the like. In the case of road traffic information, the detailed information is the actual length of the traffic jam, the time when traffic congestion is expected to be resolved, and in the case of traffic regulation information, the duration of road construction, construction work, etc. The type of traffic regulation such as lane regulation, the time zone of traffic regulation, etc. The communication device 17 is configured to be capable of two-way communication with a communication device mounted on a surrounding vehicle of the host vehicle 1.

  The data recording unit 12 reads an external storage device and a hard disk (not shown) as a recording medium, a map information database (map information DB) 25 stored in the hard disk, a predetermined program, etc. And a driver (not shown) for writing the data. The map information DB 25 stores navigation map information 26 used for travel guidance and route search of the navigation device 2.

  Here, the navigation map information 26 is composed of various information necessary for route guidance and map display. For example, new road information for specifying each new road, map display data for displaying a map, Search for intersection data related to intersections, node data related to node points, link data related to roads (links), search data for searching routes, facility data related to POI (Point of Interest) such as stores that are a type of facility, and points. Search data and the like.

  In addition, as node data, actual road junctions (including intersections, T-junctions, etc.), node coordinates (positions) set for each road according to the radius of curvature, etc. Elevation, node attribute indicating whether the node is a node corresponding to an intersection, etc., a connection link number list that is a list of link IDs that are identification numbers of links connected to the node, and a node of a node adjacent to the node via a link Data related to an adjacent node number list that is a list of numbers is recorded.

  Further, as link data, a link ID for specifying a link for each link constituting the road, a link length indicating the length of the link, a coordinate position (for example, latitude and longitude) of the start point and end point of the link, Presence / absence of median strip, link gradient, road width to which link belongs, number of lanes, legal speed, presence / absence of lane change prohibition line, coordinate position of both end points of lane change prohibition line (for example, latitude and longitude) The data representing the railroad crossings, etc. for the corner, the radius of curvature, the intersection, the T-junction, the entrance and exit of the corner, etc., the road type, in addition to general roads such as national roads, prefectural roads, narrow streets, etc. Data representing toll roads such as national roads, city expressways, general toll roads, and toll bridges are recorded.

  Furthermore, regarding toll roads, data relating to the toll road entrance and exit attachment roads (rampways), toll gates (interchanges), charges for each travel section, and the like are recorded. A toll road such as a national highway, a city highway, a car road, and a general toll road is referred to as a toll road. One-digit or two-digit national roads excluding toll roads, three-digit or more national roads, major local roads, prefectural roads, municipal roads, etc. are called general roads.

  In addition, as search data, data used for searching and displaying a route to a set destination is recorded, and costs for passing through a node (hereinafter referred to as node cost) and roads are configured. Cost data used for calculating a search cost including a link cost (hereinafter referred to as a link cost), route display data for displaying a guide route selected by the route search on a map of the liquid crystal display 15, and the like. It is configured. This link cost is data indicating the average travel time required to pass through the link, and is, for example, “3 (min)”.

The facility data includes hotel, amusement park, palace, hospital, gas station, parking lot, station, airport, ferry landing, interchange (IC), junction (JCT), service area, parking area (PA). POI names and addresses, telephone numbers, coordinate positions on the map (for example, latitude and longitude of the center position, entrance, exit, etc.), facility icons and landmarks that display the location of the facility on the map, etc. Are stored together with the facility ID that identifies the POI. In addition, a registered facility ID for specifying a registered facility such as a convenience store or a gas station registered by the user is also stored.
The contents of the map information DB 25 are updated by downloading update information distributed from the map information distribution center (not shown) via the communication device 17.

  As shown in FIG. 1, the navigation control unit 13 constituting the navigation device 2 is a working device that controls the entire navigation device 2, the CPU 41 as the control device, and the CPU 41 performs various arithmetic processes. In addition to being used as a memory, it has a RAM 42 for storing route data when a route is searched, an internal storage device such as a ROM 43 for storing control programs, a timer 45 for measuring time, etc. Yes. In addition, the ROM 43 sets a side space detection start point, a deceleration start point, a lane change start point, a lane change completion point, and the like, which will be described later, and performs lane change instruction control to the vehicle control ECU 3. Programs such as “processing” (see FIG. 2) are stored.

  The operation unit 14 is operated when correcting the current position at the start of travel, inputting a departure point as a guidance start point and a destination as a guidance end point, or when searching for information about facilities, etc. Consists of keys and multiple operation switches. The navigation control unit 13 performs control to execute various corresponding operations based on switch signals output by pressing the switches.

  Also, the liquid crystal display 15 includes map information currently traveling, map information around the destination, operation guidance, operation menu, key guidance, guidance route from the current location to the destination, guidance information along the guidance route, traffic Information, news, weather forecast, time, mail, TV program, etc. are displayed.

  Further, the speaker 16 outputs voice guidance or the like for guiding traveling along the guidance route based on an instruction from the navigation control unit 13. Here, the voice guidance to be guided includes, for example, “200m ahead, turn right at XX intersection”.

  The touch panel 18 is a transparent panel-like touch switch mounted on the display screen of the liquid crystal display 15. Various instruction commands can be input by pressing buttons or a map displayed on the screen of the liquid crystal display 15. It is possible to do the same. Note that the touch panel 18 may be configured by an optical sensor liquid crystal method or the like that directly presses the screen of the liquid crystal display 15.

[Lane change support processing]
Next, in the host vehicle 1 configured as described above, the processing is executed by the CPU 41 of the navigation device 2 and includes a side space detection start point, a deceleration start point, a lane change start point, a lane change completion point, and the like. A “lane change support process” for performing lane change instruction control on the vehicle control ECU 3 will be described with reference to FIGS. Note that the program shown in the flowchart of FIG. 2 is, for example, 0.1% every predetermined time while continuing automatic driving when a signal indicating that automatic driving is started is input from the vehicle control ECU 3. This process is executed every second. In addition, when the automatic driving start button 61 is pressed and turned on on the toll road, the vehicle control ECU 3 starts an automatic driving and then outputs an automatic driving start signal indicating that the automatic driving has started. Output to.

  As shown in FIG. 2, first, in step (hereinafter abbreviated as “S”) 11, the CPU 41 of the navigation device 2 acquires the vehicle position based on the detection result of the current location detection processing unit 11. Then, the CPU 41 acquires route information ahead of the host vehicle 1 in the traveling direction. For example, the CPU 41 acquires route information within 10 km along the guide route (scheduled travel route) from the vehicle position. Subsequently, the CPU 41 executes a determination process for determining whether or not there is a guidance branch point that requires a lane change in front of the host vehicle, that is, whether or not a lane change is necessary. If it is determined that there is no guidance branch point that requires a lane change ahead of the host vehicle (S11: NO), the CPU 41 ends the process.

  On the other hand, if it is determined that there is a guidance branch point that requires a lane change ahead of the host vehicle (S11: YES), the CPU 41 proceeds to the process of S12. In S12, the CPU 41 performs guidance that requires a lane change ahead of the host vehicle from the host vehicle position, excluding a lane change prohibition section partitioned by a lane change prohibition line along the guide route (scheduled travel route) from the host vehicle position. The road distance to the branch point is acquired and stored in the RAM 42 as the distance from the vehicle position to the guidance branch point.

  For example, as shown in FIG. 5, the CPU 41 moves from the own vehicle position where the own vehicle 1 is located to each lane change prohibition section X1, X2, X3 divided by the lane change prohibition line 83 along the guide route 81. The road distance (L1 + L2) (m) from the vehicle position to the guidance branch point 82 that requires a lane change ahead of the host vehicle is calculated based on the navigation map information 26, and the guidance branch point 82 is calculated from the vehicle position. It is memorized as a distance.

  Subsequently, the CPU 41 starts detecting whether or not the distance from the vehicle position to the guidance branch point has reached a distance for starting detection of a space where the lane can be changed, that is, the space where the own vehicle position can be changed. Determination processing is executed to determine whether or not the side detection start point is reached, that is, whether or not the side detection start point is passed. The CPU 41 determines that the vehicle position has reached the side detection start point when the distance from the vehicle position to the guidance branch point requiring lane change ahead of the vehicle is, for example, 3 km or less. It is determined that the vehicle has passed the side detection start point.

And when it is determined that the distance from the vehicle position to the guidance branch point has not reached the distance for starting detection of the space where the lane can be changed, that is, the vehicle position has not reached the side detection start point. (S12: NO), the CPU 41 ends the process.
On the other hand, the distance from the vehicle position to the guidance branch point has reached the distance for starting the detection of the space where the lane can be changed, that is, the vehicle position has reached the side detection start point, that is, the side detection start. When it determines with having passed the point (S12: YES), CPU41 transfers to the process of S13.

  In S13, the CPU 41 requests the vehicle control ECU 3 to measure the lateral space around the host vehicle 1 in the changed lane to be changed. As a result, the CPU 71 of the vehicle control ECU 3 performs image processing of the image data captured by the front capturing camera 76 </ b> A and the image data captured by the rear capturing camera 76 </ b> B in the space on the side of the host vehicle 1 in the changed lane. Or measured by the millimeter wave radar 77 and output to the navigation device 2.

  Then, the CPU 41 sends data such as the distance of the space on the side of the own vehicle 1 in the changed lane to be changed to the lane, such as data on the relative positional relationship and relative speed of the other vehicle in the changed lane to the own vehicle 1. Are stored in the RAM 42, the process proceeds to S14.

  In S <b> 14, the CPU 41 acquires the vehicle position based on the detection result of the current location detection processing unit 11. And CPU41 performs the determination process which determines whether the own vehicle position reached | attained the deceleration start point which starts the deceleration for starting a lane change, ie, passed through the deceleration start point. Note that the CPU 41 reaches the deceleration start point when the distance from the vehicle position to the guidance branch point that requires a lane change ahead of the vehicle is, for example, 2 km or less. It is determined that the starting point has been passed. And when it determines with the own vehicle position not having reached the deceleration start point, ie, not having passed through the deceleration start point (S14: NO), CPU41 transfers to the process of S15.

  In S <b> 15, the CPU 41 reads from the RAM 42 data such as the distance of the space on the side of the host vehicle 1 in the changed lane to be changed, for example, data on the relative positional relationship of the other vehicle in the changed lane with respect to the host vehicle 1. And CPU41 performs the determination process which determines whether the space which can change a lane exists in the side of the lane change side of the own vehicle 1. FIG. And when it determines with the space which can change lanes not existing in the side of the lane change side of the own vehicle 1 (S15: NO), CPU41 complete | finishes the said process. On the other hand, when it is determined that there is a space where the lane can be changed on the side of the lane change side of the host vehicle 1 (S15: YES), the CPU 41 proceeds to a process of S18 described later.

  On the other hand, if it is determined in S14 that the vehicle position has reached the deceleration start point, that is, has passed the deceleration start point (S14: YES), the CPU 41 proceeds to the process of S16. In S16, the CPU 41 executes the process of S15. And when it determines with the space which can change lanes existing in the side of the lane change side of the own vehicle 1 (S16: YES), CPU41 transfers to the process of below-mentioned S18. On the other hand, when it is determined that there is no space in the lane change side of the host vehicle 1 where the lane can be changed (S16: NO), the CPU 41 proceeds to the process of S17.

In S <b> 17, the CPU 41 executes a sub-process (see FIG. 3) of “space securing deceleration process” described later, and then proceeds to the process of S <b> 18. In S <b> 18, the CPU 41 acquires the vehicle position based on the detection result of the current location detection processing unit 11. Subsequently, based on the navigation map information 26, the CPU 41 determines whether or not the own vehicle position is in a lane change prohibition section partitioned by a lane change prohibition line, that is, the host vehicle 1 is traveling in the lane change prohibition section. A determination process is performed to determine whether or not there is any.
When it is determined that the own vehicle position is in the lane change prohibited section divided by the lane change prohibited line, that is, the own vehicle 1 is traveling in the lane change prohibited section (S18: NO), the CPU 41 Then, the process ends. On the other hand, when it is determined that the vehicle position is not in the lane change prohibition section defined by the lane change prohibition line, that is, the host vehicle 1 is not traveling in the lane change prohibition section (S18: YES), the CPU 41 The process proceeds to S19.

  In S19, based on the navigation map information 26, the CPU 41 determines whether or not there is a starting point in the traveling direction of the host vehicle 1 on the lane change prohibition line within a predetermined distance from the host vehicle position, for example, within 100 m. Execute the judgment process. If it is determined that there is a starting point in the traveling direction of the host vehicle 1 on the lane change prohibition line within a certain distance forward from the host vehicle position, for example, within 100 m (S19: NO), the CPU 41 ends the process. To do. On the other hand, when it is determined that there is no starting point in the traveling direction of the host vehicle 1 on the lane change prohibition line within a certain distance forward from the host vehicle position, for example, within 100 m (S19: YES), the CPU 41 performs the process of S20. Migrate to

  In S20, the CPU 41 requests the vehicle control ECU 3 to change the lane to the side change lane. As a result, the CPU 71 of the vehicle control ECU 3 controls driving of an unillustrated engine device, brake device, electric power steering, etc., and changes the lane.

  Here, an example of specific lane change when there is a space where the lane can be changed to the side of the own vehicle 1 when the own vehicle 1 passes the side detection start point is shown in FIGS. 6 and 7. Based on

  For example, as shown in FIG. 6, when the CPU 41 determines that the vehicle position has reached the side detection start point 85, that is, has passed the side detection start point 85 (S12: YES), the vehicle The control ECU 3 is requested to measure the side space of the host vehicle 1 in the changed lane to be changed. Then, the CPU 41 receives from the vehicle control ECU 3 data indicating that there is a space where the lane can be changed to the side of the host vehicle 1 (S13).

  And the own vehicle 1 has not reached the deceleration start point 86 (S14: NO), and there is a space where the lane can be changed to the side of the own vehicle 1 (S15: YES). Since the position is not located in the lane change prohibition section (S18: YES), and there is no starting point in the traveling direction of the host vehicle 1 of the lane change prohibition line within a certain forward distance from the own vehicle position (S19: YES). The CPU 41 requests the vehicle control ECU 3 to change the lane to the side change lane. As a result, the CPU 71 of the vehicle control ECU 3 drives and controls an unillustrated engine device, brake device, electric power steering, etc., and performs lane control from the left lane 87 to the right lane 88 while maintaining normal travel without performing deceleration control. Change is made (S20).

  Further, for example, as shown in FIG. 7, when the CPU 41 determines that the vehicle position has reached the side detection start point 85, that is, has passed the side detection start point 85 (S12: YES). Then, the vehicle control ECU 3 is requested to measure the lateral space of the host vehicle 1 in the changed lane to be changed. Then, the CPU 41 receives from the vehicle control ECU 3 data indicating that there is a space where the lane can be changed to the side of the host vehicle 1 (S13).

  And the own vehicle 1 has not reached the deceleration start point 86 (S14: NO), and there is a space where the lane can be changed to the side of the own vehicle 1 (S15: YES). Although the position is not located in the lane change prohibition section (S18: YES), the start point 83A of the lane change prohibition line 83 in the traveling direction of the host vehicle 1 exists within a certain distance from the vehicle position (S19: NO). ) The CPU 41 does not request the vehicle control ECU 3 for a lane change request. That is, the CPU 41 delays the start of lane change.

  Thereafter, when the front end portion in the traveling direction of the host vehicle 1 reaches the end point 83B in the traveling direction of the host vehicle 1 of the lane change prohibition line 83 (S12: YES), the lane change is performed with respect to the vehicle control ECU 3. A request is made to measure the lateral space of the host vehicle 1 in the changed lane. Then, the CPU 41 receives from the vehicle control ECU 3 data indicating that there is a space where the lane can be changed to the side of the host vehicle 1 (S13).

  And the own vehicle 1 has not reached the deceleration start point 86 (S14: NO), and there is a space where the lane can be changed to the side of the own vehicle 1 (S15: YES). Since the position is not located in the lane change prohibition section (S18: YES), and there is no starting point in the traveling direction of the host vehicle 1 of the lane change prohibition line within a certain forward distance from the own vehicle position (S19: YES). The CPU 41 requests the vehicle control ECU 3 to change the lane to the side change lane. As a result, the CPU 71 of the vehicle control ECU 3 drives and controls an unillustrated engine device, brake device, electric power steering, etc., and performs lane control from the left lane 87 to the right lane 88 while maintaining normal travel without performing deceleration control. Change is made (S20).

  Subsequently, as shown in FIG. 2, in S21, the CPU 41 reads the space flag from the RAM 42, sets the space flag to OFF and stores it again in the RAM 42, and then ends the processing. When the navigation device 2 is activated, the space flag is set to OFF and stored in the RAM 42.

[Space securing deceleration processing]
Next, the sub-process of the “space securing deceleration process” executed by the CPU 41 in S17 will be described based on FIG. 3, FIG. 4, FIG. 8 to FIG. As shown in FIG. 3, first, in S111, the CPU 41 reads a space flag from the RAM 42, and executes a determination process for determining whether or not the space flag is set to OFF. If it is determined that the space flag is set to ON (S111: NO), the CPU 41 proceeds to the process of S127 described later.

  On the other hand, if it is determined that the space flag is set to OFF (S111: YES), the CPU 41 proceeds to the process of S112. In S112, the CPU 41 makes the vehicle control ECU 3 to the rear of the host vehicle 1 in the changed lane to change lanes, that is, within the range of the host vehicle rear side Y1 (m), for example, the range of the host vehicle rear side 200m. Request to measure the inter-vehicle space inside. As a result, the CPU 71 of the vehicle control ECU 3 performs image processing on the image data obtained by imaging the inter-vehicle space within the range of the rear side Y1 (m) of the host vehicle in the changed lane with the rear imaging camera 76B, or millimeter wave Measured by the radar 77 and output to the navigation device 2.

  And CPU41 is data, such as the distance of the inter-vehicle space in the range of the own vehicle rear side Y1 (m) in the change lane which changes lanes, for example, in the range of the own vehicle rear side Y1 (m) of the change lane When the relative positional relationship and relative speed data of the other vehicle with respect to the host vehicle 1 are received from the vehicle control ECU 3, these data are stored in the RAM 42, and then the process proceeds to S113. In S113, the CPU 41 changes the lane of the widest inter-vehicle space of other vehicles within the range of the rear lane Y1 (m) of the own lane, and the vehicle 1 enters the lane change target location. And stored in the RAM 42.

  For example, as shown in FIG. 8, when the own vehicle position is located on the near side in the traveling direction of the own vehicle 1 with respect to the deceleration start point 86 (in FIG. 8, the own vehicle 1 is located at the deceleration start point 86. It is located on the left side.), There is no space for changing lanes between the other vehicles 91 and 92 located on the side of the host vehicle 1. On the other hand, between the other vehicles 92 and 93 located within the range of the host vehicle rear side Y1 (m) of the host vehicle 1, that is, between the rear end portion of the other vehicle 92 and the front end portion of the other vehicle 93. In addition, there is the widest inter-vehicle space that the host vehicle 1 can enter after changing lanes. In this case, the CPU 41 sets the inter-vehicle space from the rear end portion of the other vehicle 92 to the front end portion of the other vehicle 93 as the lane change target place 95 where the host vehicle 1 changes lane and enters, and stores it in the RAM 42. To do.

  Subsequently, as shown in FIG. 3, in S114, the CPU 41 reads out the relative positional relationship data of the other vehicle with respect to the own vehicle 1 within the range of the rear side Y1 (m) of the changed lane from the RAM 42, and Detecting a distance L3 (m) (see FIG. 8) from the front end of the vehicle 1 to the front end of the lane change target location, that is, to the rear end of the other vehicle that is ahead in the direction of travel of the lane change target location, Store in the RAM 42.

  In S115, the CPU 41 reads out the relative positional relationship and relative speed data of the other vehicle with respect to the own vehicle 1 within the range of the rear side Y1 (m) of the changed lane from the RAM 42, and the progress of the lane change target location. The relative speed with respect to the own vehicle 1 of the other vehicle (the other vehicle 92 in FIG. 8) ahead in the direction is detected. And CPU41 acquires the vehicle speed of the own vehicle 1 by the vehicle speed sensor 51, adds a relative speed to this vehicle speed, and memorize | stores in RAM42 as speed V1 of the other vehicle ahead of the advancing direction of a lane change object place.

  Subsequently, in S116, the CPU 41 applies a deceleration V2 that is reduced by 10% to 20% from the speed V1 of the other vehicle that is ahead in the traveling direction of the lane change target location, preferably a deceleration V2 that is reduced by about 10%. The vehicle speed is set from the deceleration start point of the vehicle 1 and stored in the RAM 42. For example, as shown in FIG. 8, when the vehicle speed of the other vehicle 92 is the speed V1, the deceleration V2 decelerated by about 10% from the speed V1 is stored in the RAM 42 as the vehicle speed traveling from the deceleration start point 86 of the host vehicle 1. Remember.

  In S117, the CPU 41 travels at the deceleration V2 from the deceleration start point of the host vehicle 1, and the traveling direction front end portion of the own vehicle 1 and the front end portion of the lane change target location, that is, the traveling direction of the lane change target location. The coordinate position (for example, latitude and longitude) of a point that is adjacent to the rear end of the other vehicle ahead is set as the coordinate position of the lane change start point for starting the lane change, and is stored in the RAM 42. .

  Specifically, the CPU 41 determines the distance L3 (m) from the front end of the host vehicle 1 to the rear end of the other vehicle that is ahead in the direction of travel of the lane change target position as the speed V1 and the deceleration V2 of the other vehicle. The travel time divided by the speed difference is multiplied by the speed V1 of the other vehicle to obtain the distance from the deceleration start point to the lane change start point. Then, the CPU 41 acquires the coordinate position of the point where the road distance from the deceleration start point becomes the calculated distance based on the navigation map information 26 and stores the coordinate position in the RAM 42 as the coordinate position of the lane change start point. Remember. In addition, it is desirable that the distance from the lane change start point to the guidance branch point where the lane change ahead of the host vehicle is necessary is set to about 1000 m to about 700 m.

  For example, as shown in FIG. 8, the CPU 41 travels from the deceleration start point 86 at the deceleration V <b> 2, and the lane change target place 95 that is the front end portion of the own vehicle 1 and the rear end portion of the other vehicle 92. Is set as the coordinate position of the lane change start point 96 at which the lane change is started, and is stored in the RAM 42.

  Subsequently, in S118, the CPU 41 executes a determination process for determining whether or not the lane change start point is located in the lane change prohibition section. And when it determines with the lane change start point not being located in the lane change prohibition area (S118: YES), CPU41 transfers to the process of below-mentioned S121. On the other hand, when it is determined that the lane change start point is located in the lane change prohibition section (S118: NO), the CPU 41 proceeds to the process of S119.

  In S119, the CPU 41 determines, based on the navigation map information 26, the coordinate position (for example, latitude and longitude) of the end point in the traveling direction of the host vehicle 1 on the lane change prohibition line that divides the lane change prohibition section where the lane change start point is located. Is.) In S120, the CPU 41 sets the coordinate position of the end point of the lane change prohibition line in the traveling direction of the host vehicle 1 as a new lane change start point, and stores it in the RAM 42.

  For example, as shown in FIG. 9, when the lane change start point 96 of the host vehicle 1 is located in the lane change prohibition section X4 (S118: NO), the CPU 41 defines the lane change prohibition section X4. In the lane change prohibition line 83, the coordinate position of the end point 83B in the traveling direction of the host vehicle 1 is acquired based on the navigation map information 26 (S119). Then, instead of the lane change start point 96, the CPU 41 sets the coordinate position of the end point 83B in the traveling direction of the host vehicle 1 on the lane change prohibition line 83 as a new lane change start point 97, and sets this coordinate position as a new one. The lane change start point 97 is stored in the RAM 42 (S120).

  Thereafter, as shown in FIG. 3, in S121, the CPU 41 changes the lane to a predetermined distance ahead from the lane change start point, for example, 200 m to 300 m ahead where the host vehicle 1 travels at a speed V1 of the other vehicle for about 10 seconds. Set the lane change completion point, which is the point to complete. And CPU41 acquires the coordinate position of this lane change completion point based on the navigation map information 26, and memorize | stores it in RAM42.

  For example, as shown in FIG. 10, the CPU 41 sets a lane change completion point 98 at a position 200 m to 300 m ahead where the host vehicle 1 travels from the lane change start point 96 at a speed V1 of another vehicle for about 10 seconds. Then, the CPU 41 acquires the coordinate position of the lane change completion point 98 based on the navigation map information 26 and stores it in the RAM 42.

  Subsequently, as shown in FIG. 4, in S122, the CPU 41 determines whether or not there is a starting point in the traveling direction of the host vehicle 1 on the lane change prohibition line (second lane change prohibition line) on the near side from the lane change completion point. A determination process is performed to determine whether or not. That is, the CPU 41 executes determination processing for determining whether or not the lane change completion point is located in the lane change prohibition section based on the navigation map information 26. And, there is no starting point in the traveling direction of the host vehicle 1 of the lane change prohibition line (second lane change prohibition line) on the near side from the lane change completion point, that is, the lane change completion point is not located in the lane change prohibition section. (S122: YES), the CPU 41 proceeds to the process of S126 described later.

  On the other hand, when the lane change prohibition line (second lane change prohibition line) has a starting point in the traveling direction of the host vehicle 1 from the lane change completion point, that is, when the lane change completion point is located in the lane change prohibition section When it determines (S122: NO), CPU41 transfers to the process of S123. In S123, the CPU 41 determines the end point in the traveling direction of the host vehicle 1 on the lane change prohibition line (second lane change prohibition line) that divides the lane change prohibition section where the lane change completion point is located based on the navigation map information 26. A coordinate position (for example, latitude and longitude) is acquired.

  In S124, the CPU 41 sets the coordinate position of the end point in the traveling direction of the host vehicle 1 on the lane change prohibition line (second lane change prohibition line) as a new lane change start point, and stores it in the RAM 42. Subsequently, in S125, the CPU 41 moves forward by a predetermined distance from the end point in the traveling direction of the host vehicle 1 on the lane change prohibition line (second lane change prohibition line), for example, when the host vehicle 1 is 10 at the speed V1 of the other vehicle. A new lane change completion point is set in front of 200 m to 300 m traveling for about a second. Then, the CPU 41 acquires the coordinate position of the new lane change completion point based on the navigation map information 26 and stores it in the RAM 42.

  For example, as shown in FIG. 10, the CPU 41 has a start point 99A in the traveling direction of the host vehicle 1 on the lane change prohibition line 99 (second lane change prohibition line) from the lane change completion point 98 to the front side, that is, When it is determined that the lane change completion point 98 is located in the lane change prohibition section X5 (S122: NO), the end point 99B of the lane change prohibition line 99 in the traveling direction of the host vehicle 1 is determined based on the navigation map information 26. A coordinate position is acquired (S123).

  Then, instead of the lane change start point 96, the CPU 41 sets the coordinate position of the end point 99B of the lane change prohibition line 99 in the traveling direction of the host vehicle 1 as a new lane change start point 101. The coordinate position is stored in the RAM 42 (S124). Subsequently, the CPU 41 moves forward a predetermined distance from the end point 99B in the traveling direction of the host vehicle 1 of the lane change prohibition line 99, for example, 200 m to 300 m ahead where the host vehicle 1 travels at a speed V1 of the other vehicle for about 10 seconds. A new lane change completion point 102 is set. Then, the CPU 41 acquires the coordinate position of the new lane change completion point 102 based on the navigation map information 26 and stores it in the RAM 42.

  After that, as shown in FIG. 4, in S126, the CPU 41 reads the space flag from the RAM 42, sets the space flag to ON, and stores it again in the RAM 42. Subsequently, in S127, the CPU 41 reads from the RAM 42 the deceleration V2 set in S116, the speed V1 of the other vehicle, and the coordinate position of the lane change completion point set in S121 or S121 and S125, and the vehicle. It transmits to control ECU3. Then, the CPU 41 travels from the deceleration start point to the lane change start point at a deceleration V2 and instructs the vehicle control ECU 3 to secure an inter-vehicle space where the lane can be changed, and then the sub-process of the “space securing deceleration process”. Is finished, the process returns to the main flowchart, and the process proceeds to S18.

Here, a specific example of changing the lane at the lane change start point after the host vehicle 1 decelerates from the deceleration start point to the lane change start point will be described with reference to FIGS.
For example, as shown in FIG. 8, when the lane change start point 96 is not in the lane change prohibition section, the CPU 41 moves the vehicle from the deceleration start point 86 to the lane change start point 96 at a deceleration V2. An instruction is given to the control ECU 3 (S127). As a result, the CPU 71 of the vehicle control ECU 3 drives and controls an engine device (not shown), a brake device, an electric power steering and the like so as to travel at a deceleration V2 from the deceleration start point 86 to the lane change start point 96.

  Then, the CPU 41 acquires the vehicle position based on the detection result of the current location detection processing unit 11, and determines that the front end 1 </ b> A in the traveling direction of the vehicle 1 has reached the lane change start point 96. The vehicle control ECU 3 is instructed to change the lane to the side change lane at the same speed V1 as the speed V1 of the other vehicle 92. As a result, the CPU 71 of the vehicle control ECU 3 drives and controls an unillustrated engine device, brake device, electric power steering, etc., changes the lane from the left lane 87 to the right lane 88 at the speed V1, and reaches the lane change completion point. The vehicle enters the lane change target place 95 before reaching (S20).

  Further, for example, as shown in FIG. 9, when the lane change start point 96 is in the lane change prohibition section, the CPU 41 travels from the deceleration start point 86 to the original lane change start point 96 at a deceleration V2. The vehicle control ECU 3 is instructed to travel from the original lane change start point 96 to the new lane change start point 97 at the same speed V1 as the speed V1 of the other vehicle 92 (S127). As a result, the CPU 71 of the vehicle control ECU 3 travels at the deceleration V2 from the deceleration start point 86 to the original lane change start point 96 and then travels from the original lane change start point 96 to the new lane change start point 97. The engine device, the brake device, the electric power steering, etc. (not shown) are driven and controlled so that the vehicle travels at the same speed V1 as the speed V1.

  Then, the CPU 41 acquires the own vehicle position based on the detection result of the current location detection processing unit 11, and determines that the front end 1 </ b> A in the traveling direction of the own vehicle 1 has reached a new lane change start point 97. The vehicle control ECU 3 is instructed to change the lane to the side change lane at the same speed V1 as the speed V1 of the other vehicle 92. As a result, the CPU 71 of the vehicle control ECU 3 drives and controls an unillustrated engine device, brake device, electric power steering, etc., changes the lane from the left lane 87 to the right lane 88 at the speed V1, and reaches the lane change completion point. The vehicle enters the lane change target place 95 before reaching (S20).

  Also, for example, as shown in FIG. 10, when the lane change completion point 98 is in the lane change prohibition section X5, the CPU 41 traveled at the deceleration V2 from the deceleration start point 86 to the original lane change start point 96. Thereafter, the vehicle control ECU 3 is instructed to travel from the original lane change start point 96 to the new lane change start point 101 at the same speed V1 as the speed V1 of the other vehicle 92 (S127). Thus, the CPU 71 of the vehicle control ECU 3 travels at the deceleration V2 from the deceleration start point 86 to the original lane change start point 96, and then travels from the original lane change start point 96 to the new lane change start point 101. The engine device, the brake device, the electric power steering, etc. (not shown) are driven and controlled so that the vehicle travels at the same speed V1 as the speed V1.

  Then, the CPU 41 acquires the own vehicle position based on the detection result of the current location detection processing unit 11, and determines that the front end 1 </ b> A in the traveling direction of the own vehicle 1 has reached the new lane change start point 101. The vehicle control ECU 3 is instructed to change the lane to the side change lane at the same speed V1 as the speed V1 of the other vehicle 92. As a result, the CPU 71 of the vehicle control ECU 3 controls driving of an unillustrated engine device, brake device, electric power steering, etc., changes the lane from the left lane 87 to the right lane 88 at the speed V1, and changes the lane change completion point 102. The vehicle enters the lane change target place 95 before reaching (S20).

  As described above in detail, in the host vehicle 1 according to the present embodiment, the CPU 41 of the navigation device 2 determines that the distance to the guidance branch point that requires a lane change ahead of the host vehicle is, for example, 3 km or less. It is determined that the vehicle position has reached the side detection start point. And CPU41 measures the space of the side of the own vehicle 1, and when the space which can change a lane exists in the side, it is made to change lane to the side change lane with respect to vehicle control ECU3. To request. In this case, if the start point of the lane change prohibition line in the traveling direction of the host vehicle 1 exists within a predetermined distance from the host vehicle position and the vehicle has not reached the deceleration start point, the lane change prohibition line At the end point, the vehicle control ECU 3 is requested to change the lane to the side change lane. Thereby, the host vehicle 1 can change lanes without decelerating during automatic driving.

  In addition, when the lane change start point is within the lane change prohibition section when the lane change start point is set after setting the deceleration V2, the CPU 41 prohibits the lane change that divides the lane change prohibition section. The lane change start point is reset to the end point of the line in the traveling direction of the host vehicle 1. As a result, it is possible to change the lane at a timing at which the lane change prohibition line is interrupted by automatic driving on a road where the lane change prohibition line exists.

  In addition, when the lane change completion point is set, the CPU 41 ends the lane change prohibition line when the start point of the lane change prohibition line in the traveling direction of the host vehicle 1 exists on the near side from the lane change completion point. Reset the lane change start point to. Then, the CPU 41 sets a new lane change completion point ahead by a predetermined distance from the new lane change start point. Thereby, it is possible to reliably prevent the vehicle from entering the changed lane across the lane change prohibited line after starting the lane change by the automatic driving on the road where the lane change prohibited line exists. Further, on a road where a lane change prohibition line exists, it is possible to change lanes at a timing when the lane change prohibition line is interrupted by automatic driving.

  If the CPU 41 determines that the front end in the traveling direction of the host vehicle 1 has reached the lane change start point, the CPU 41 changes the lane to the side change lane at the same speed V1 as the speed V1 of the other vehicle. The vehicle control ECU 3 is instructed to do so. Thereby, vehicle control ECU3 can start a lane change reliably at the timing which a lane change prohibition line interrupts, and can shorten the distance of the lane changeable area required in order to change a lane.

  Further, when there is an inter-vehicle space in which the lane can be changed within the range of the rear side Y1 (m) of the host vehicle, the CPU 41 can change the lane based on the relative positional relationship and the relative speed of the other vehicle with respect to the host vehicle 1. A deceleration V2 that is 10% to 20% decelerated from the speed V1 of the other vehicle in front of the place in the traveling direction is set. Then, the CPU 41 travels at the deceleration V2 and sets a lane change start point at a point where the front end portion of the host vehicle 1 and the front end portion of the lane change target location are substantially adjacent to each other. Thus, the vehicle control ECU 3 starts the lane change when the vehicle reaches the lane change start point by controlling the vehicle to travel at the deceleration V2 when passing the deceleration start point. It becomes possible to change to the lane by automatic driving.

  In addition, this invention is not limited to the said Example, Of course, various improvement and deformation | transformation are possible within the range which does not deviate from the summary of this invention. In the embodiment of the present invention, the vehicle control ECU 3 does not depend on the driver's operation to control all the operations of the accelerator operation, the brake operation, and the steering wheel operation, which are the operations related to the behavior of the vehicle among the operations of the vehicle. It has been described as automatic operation. However, the automatic driving that does not depend on the driver's operation means that the vehicle control ECU 3 controls at least one of the accelerator operation, the brake operation, and the steering wheel operation, which is an operation related to the behavior of the vehicle among the vehicle operations. Good. On the other hand, manual driving depending on the driver's operation has been described as a driver performing an accelerator operation, a brake operation, and a steering wheel operation, which are operations related to the behavior of the vehicle, among the operations of the vehicle.

  Moreover, although the embodiment which actualized the automatic driving assistance device according to the present invention has been described above, the automatic driving assistance device can also have the following configuration, and in that case, the following effects can be obtained.

For example, the first configuration is as follows.
Start arrival determination means for determining whether or not a front end portion in the traveling direction of the host vehicle has reached the lane change start point; and a front end portion in the traveling direction of the host vehicle through the start arrival determination means And a control means for controlling the host vehicle to start lane change when it is determined that the lane change start point has been reached.
According to the automatic driving support device having the above configuration, when the front end in the traveling direction of the host vehicle reaches the lane change start point, the host vehicle is controlled to start the lane change. The lane change can be surely started at the timing when the forbidden line is interrupted, and the distance of the lane changeable section necessary for changing the lane can be shortened.

The second configuration is as follows.
Completion point setting means for setting a lane change completion point that completes lane change ahead of the lane change start point in the traveling direction of the host vehicle is provided, and the control means completes the lane change of the host vehicle. It is characterized by controlling so as to end before the point is reached.
According to the automatic driving support device having the above configuration, in order to control to end the lane change of the own vehicle before reaching the lane change completion point set ahead in the traveling direction of the own vehicle, from the lane change start point The lane change can be performed reliably between the lane change completion points.

The third configuration is as follows.
Prohibiting line determination means for determining whether a starting point of a second lane change prohibition line exists on the near side in the traveling direction of the host vehicle from the lane change completion point based on the road information, the prohibition line If it is determined via the determination means that the start point of the second lane change prohibition line is present on the near side in the traveling direction of the host vehicle from the lane change completion point, the start point setting means A lane change start point for starting the lane change of the host vehicle is reset at the end of the second lane change prohibition line in the traveling direction of the vehicle.
According to the automatic driving assistance device having the above-described configuration, when the start point of the second lane change prohibition line exists on the near side in the traveling direction of the host vehicle from the lane change completion point, the end of the second lane change prohibition line To reset the lane change start point for starting the lane change of the own vehicle. As a result, even if the distance from the end of the lane change prohibition line to the start point of the second lane change prohibition line in the traveling direction of the host vehicle is short, the lane change start point is reset to the end point of the second lane change prohibition line. Thus, it is possible to change lanes by automatic driving.

The fourth configuration is as follows.
Other vehicle detection means for detecting a positional relationship and relative speed between the own vehicle and another vehicle traveling on a changed lane in which the own vehicle changes lanes, the own vehicle detected via the other vehicle detection means, and the other Deceleration determining means for determining whether or not it is necessary to decelerate before reaching the lane change start point based on the positional relationship and relative speed with the vehicle, and the lane change start point via the deceleration determination means When it is determined that it is necessary to decelerate before reaching the vehicle, a deceleration start point setting means for setting a deceleration start point at which deceleration starts before the lane change start point in the traveling direction of the host vehicle And the control means controls to start deceleration when passing through the deceleration start point.
According to the automatic driving support device having the above-described configuration, the vehicle decelerates until reaching the lane change start point based on the positional relationship and relative speed between the own vehicle and another vehicle that travels in the changed lane in which the own vehicle changes lanes. If it is determined that it is necessary to do so, the deceleration start point is set in front of the lane change start point in the traveling direction of the host vehicle. And when the own vehicle passes the deceleration start point, it controls to start deceleration. As a result, a lane change start is set in order to set a deceleration start point on the near side in the traveling direction of the host vehicle from the lane change start point, and to start deceleration when the host vehicle passes the deceleration start point. When the point is reached, it is possible to change the lane by changing the positional relationship with another vehicle.

Furthermore, the fifth configuration is as follows.
Vehicle speed detection means for detecting a vehicle speed during travel of the host vehicle, wherein the deceleration determination means is configured to change the lane when the host vehicle reaches the lane change start point at the vehicle speed detected by the vehicle speed detection means. The vehicle has a space determining means for determining whether or not there is a space in which the own vehicle can change lanes relative to the position of the other vehicle in the vehicle, and the deceleration determining means If it is determined that there is a space where the lane can be changed, it is determined that there is no need to decelerate until the lane change start point is reached, and there is a space where the host vehicle can change the lane via the space determination means. When it is determined that the vehicle does not perform, it is determined that the vehicle needs to decelerate before reaching the lane change start point.
According to the automatic driving support device having the above configuration, when the own vehicle reaches the lane change start point, when there is a space where the own vehicle can change the lane with respect to the position of the other vehicle in the changed lane, Since the vehicle does not decelerate until reaching the lane change start point, the lane can be changed without decelerating. On the other hand, when the vehicle reaches the lane change start point without decelerating, if there is no space in which the own vehicle can change the lane with respect to the position of the other vehicle in the changed lane, the lane change start point A deceleration start point is set on the near side in the traveling direction of the host vehicle. As a result, when the host vehicle passes the deceleration start point, the vehicle is controlled to start decelerating. Therefore, when the host vehicle reaches the lane change start point, the host vehicle moves relative to the position of the other vehicle in the changed lane. It is possible to change the lane by forming a space where the lane can be changed.

DESCRIPTION OF SYMBOLS 1 Own vehicle 1A Front end part 2 Navigation apparatus 3 Vehicle control ECU
25 Map information DB
26 Navigation map information 31 GPS
41, 71 CPU
42, 72 RAM
43, 73 ROM
82 Guide branch point 83, 99 Lane change prohibition line 83A, 99A Start point 83B, 99B End point 85 Side detection start point 86 Deceleration start point 95 Lane change target place 96, 97, 101 Lane change start point 98, 102 Lane change completion point

Claims (8)

Road information acquisition means for acquiring road information including information on a lane change prohibition line of a road on which the host vehicle runs;
During automatic driving, lane change determination means for determining whether to change lanes at a guidance branch point located in front of the host vehicle;
If it is determined via the lane change determination means that a lane change is made at the guidance branch point, whether or not the host vehicle is traveling on a road where the lane change prohibition line exists based on the road information Road determination means for determining whether or not
If it is determined via the road determination means that the host vehicle is traveling on a road where the lane change prohibition line exists, the host vehicle is located at the end of the lane change prohibition line in the traveling direction of the host vehicle. Start point setting means for setting a lane change start point for starting lane change,
An automatic driving support device characterized by comprising: Start arrival determination means for determining whether or not the front end in the traveling direction of the host vehicle has reached the lane change start point;
Control means for controlling the host vehicle to start lane change when it is determined via the start arrival determination means that the front end in the traveling direction of the host vehicle has reached the lane change start point. When,
The automatic driving assistance device according to claim 1, further comprising: Completion point setting means for setting a lane change completion point to complete the lane change ahead of the lane change start point in the traveling direction of the host vehicle,
The automatic driving support device according to claim 2, wherein the control unit controls the lane change of the host vehicle to end before reaching the lane change completion point. Prohibiting line determination means for determining whether or not the start point of the second lane change prohibition line exists on the near side in the traveling direction of the host vehicle from the lane change completion point based on the road information,
If it is determined that the start point of the second lane change prohibition line is present on the near side in the traveling direction of the host vehicle from the lane change completion point via the prohibition line determination means, the start point setting means is 4. The automatic driving support device according to claim 3, wherein a lane change start point for starting the lane change of the host vehicle is reset at a terminal of the second lane change prohibition line in the traveling direction of the host vehicle. . Other vehicle detection means for detecting a positional relationship and relative speed between the own vehicle and another vehicle that travels in a changed lane in which the own vehicle changes lanes;
Deceleration that determines whether or not it is necessary to decelerate before reaching the lane change start point based on the positional relationship and relative speed between the own vehicle and the other vehicle detected via the other vehicle detection means A determination means;
If it is determined via the deceleration determination means that it is necessary to decelerate before reaching the lane change start point, the vehicle starts to decelerate from the lane change start point to the near side in the traveling direction of the host vehicle. A deceleration start point setting means for setting a deceleration start point to be
With
The automatic driving support device according to any one of claims 1 to 4, wherein the control means performs control so as to start deceleration when the deceleration start point is passed. Vehicle speed detecting means for detecting the vehicle speed during travel of the host vehicle,
The deceleration determining means is a space in which the own vehicle can change lanes relative to the position of the other vehicle in the changed lane when the own vehicle reaches the lane change start point at the vehicle speed detected by the vehicle speed detecting means. A space determination means for determining whether or not there exists,
When it is determined that there is a space where the host vehicle can change lanes through the space determination unit, the deceleration determination unit determines that it is not necessary to decelerate before reaching the lane change start point,
When it is determined through the space determination means that there is no space in which the host vehicle can change lanes, it is determined that it is necessary to decelerate before reaching the lane change start point. Item 6. The automatic driving support device according to item 5. An automatic driving support method executed by an automatic driving support device comprising a control unit and road information acquisition means for acquiring road information including information on a lane change prohibition line of a road on which the host vehicle travels,
Executed by the control unit;
During automatic operation, a lane change determination step for determining whether to change lanes at a guidance branch point located in front of the host vehicle;
When it is determined in the lane change determination step that the lane change is performed at the guidance branch point, the road on which the host vehicle has the lane change prohibition line based on the road information acquired by the road information acquisition unit A road determination step for determining whether or not the vehicle is traveling,
If it is determined in the road determination step that the host vehicle is traveling on a road where the lane change prohibition line exists, the lane of the host vehicle is at the end of the lane change prohibition line in the traveling direction of the host vehicle. A start point setting step for setting a lane change start point for starting the change;
An automatic driving support method characterized by comprising: In a computer equipped with road information acquisition means for acquiring road information including information on the lane change prohibition line of the road on which the host vehicle runs,
During automatic operation, a lane change determination step for determining whether to change lanes at a guidance branch point located in front of the host vehicle;
When it is determined in the lane change determination step that the lane change is performed at the guidance branch point, the road on which the host vehicle has the lane change prohibition line based on the road information acquired by the road information acquisition unit A road determination step for determining whether or not the vehicle is traveling,
If it is determined in the road determination step that the host vehicle is traveling on a road where the lane change prohibition line exists, the lane of the host vehicle is at the end of the lane change prohibition line in the traveling direction of the host vehicle. A start point setting step for setting a lane change start point for starting the change;
A program for running

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