JP2004171152A - Vehicular information providing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide proper information for an occupant of one's own vehicle when a traveling state of an oncoming vehicle changes to a starting state from a stopping state. <P>SOLUTION: This vehicular information providing device notifies arrival predicting time T of the oncoming vehicle into an intersection in a decreasingly corrected state at starting acceleration of changing the traveling state of the oncoming vehicle V2 to the starting state from the stopping state when providing the arrival predicting time T of the oncoming vehicle V2 into the intersection so that the occupant of the one's own vehicle V1 can recognize the time. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a technical field of providing information received from a road facility to an occupant of a vehicle.
[0002]
[Prior art]
Conventionally, in the field of automobiles, the presence / absence of an obstacle such as another vehicle existing at an intersection or a curve ahead of a host vehicle is recognized based on information received from a road facility side, and the information received and detection by the host vehicle are used. An advanced cruise-assist highway system (AHS) technology has been proposed in which an alarm is output to avoid danger and a driving support operation is performed based on a running state such as a vehicle speed.
[0003]
[Patent Document 1]
JP 2001-101593 A
[0004]
[Problems to be solved by the invention]
According to the above-mentioned conventional AHS, information (position, vehicle speed, estimated arrival time, etc.) on an oncoming vehicle is reported (provided) by the own vehicle even when, for example, a so-called right turn is waiting at an intersection. Therefore, the danger of collision with the oncoming vehicle due to inadvertent heading of the own vehicle to the oncoming road can be avoided.
[0005]
However, in the conventional AHS, the information is provided in the own vehicle using the vehicle speed of the oncoming vehicle detected by the road facility side. Immediately after the traveling state changes from the stopped state to the start state, the vehicle speed of the oncoming vehicle is almost zero, so even if the vehicle actually arrives a few seconds later, the calculated expected arrival time is large and unrealistic. Values may cause misunderstanding of the driver.
[0006]
Therefore, the present invention provides a vehicle information providing device that provides appropriate information to an occupant of the host vehicle when the host vehicle turns right in an intersection even when the running state of the oncoming vehicle changes from a stop state to a start state. With the goal.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a vehicle information providing device according to the present invention has the following configuration.
[0008]
That is, a vehicle information providing apparatus that provides information on an oncoming vehicle received from road facilities to an occupant of the vehicle when the vehicle turns right in an intersection,
When the occupant of the own vehicle provides the estimated time of arrival of the oncoming vehicle within the intersection in a recognizable manner, when the traveling state of the oncoming vehicle changes from the stopped state to the start state, the expected arrival of the oncoming vehicle within the intersection is predicted. An information providing means for providing the time as a state corrected to be smaller than the expected arrival time based on the actual traveling state of the oncoming vehicle is provided.
[0009]
Further, in order to achieve the above object, the vehicle information providing device according to the present invention is characterized by the following configuration.
[0010]
That is, a vehicle information providing apparatus that provides information on an oncoming vehicle received from road facilities to an occupant of the vehicle when the vehicle turns right in an intersection,
When the on-vehicle traveling state of the oncoming vehicle changes from the stopped state to the start state when the occupant of the own vehicle provides the estimated time of arrival of the oncoming vehicle within the intersection, the estimated time of arrival of the oncoming vehicle within the intersection is provided. An information providing means for providing the time as a state corrected to be smaller than the expected arrival time based on the actual traveling state of the oncoming vehicle is provided.
[0011]
Alternatively, in order to achieve the above object, a vehicle information providing apparatus according to the present invention has the following configuration.
[0012]
That is, a vehicle information providing apparatus that provides information on an oncoming vehicle received from road facilities to an occupant of the vehicle when the vehicle turns right in an intersection,
When providing the vehicle speed of an oncoming vehicle so that the occupant of the own vehicle can recognize it, when the traveling state of the oncoming vehicle changes from a stopped state to a start state, the vehicle speed of the oncoming vehicle is increased from the actual vehicle speed of the oncoming vehicle. An information providing means for providing a corrected state is provided.
[0013]
【The invention's effect】
According to the present invention described above, even when the traveling state of the oncoming vehicle changes from the stopped state to the starting state, the vehicle information providing device provides appropriate information to the occupant of the own vehicle when the own vehicle turns right in the intersection. The provision of the device is realized.
[0014]
That is, according to the first aspect of the present invention, when the traveling state of the oncoming vehicle changes from the stopped state to the starting state, the predicted arrival time of the oncoming vehicle into the intersection is compared with the predicted arrival time based on the actual traveling state. As a small corrected state is provided (notified) by, for example, displaying a segment (symbol) or the like, it is possible to call the attention of the occupant, and the inadvertent head of the vehicle to the opposite road for a right turn It is possible to avoid a danger such as a collision with an oncoming vehicle caused by taking out.
[0015]
According to the invention of claim 2, when the traveling state of the oncoming vehicle changes from the stopped state to the starting state, the vehicle speed of the oncoming vehicle is largely corrected (enlargement correction) as compared with the vehicle speed representing the actual traveling state. Since the state is provided (notified) by, for example, displaying a segment (symbol), the occupant can be alerted, and the oncoming vehicle caused by careless heading of the own vehicle to the oncoming road for a right turn Danger such as collision with the vehicle can be avoided.
[0016]
According to the third aspect of the present invention, even when the oncoming vehicle is traveling normally (for example, passing through an intersection at a constant speed according to a green light), a small predicted arrival time is provided. Since it is relatively unlikely that the speed of the oncoming vehicle changes greatly, such as when the traveling state of the oncoming vehicle changes from the stopped state to the start state, the correction width is set to be small. With this, it is possible to appropriately alert the occupant even when the oncoming vehicle is normally traveling at the intersection, and to more appropriately alert the occupant when the vehicle changes from the stopped state to the start state. Can be.
[0017]
According to the fourth aspect of the present invention, even when the oncoming vehicle is traveling normally (for example, passing through an intersection at a constant speed according to a green light), a greatly corrected vehicle speed is provided. Since the possibility that the speed of the oncoming vehicle greatly changes, such as when the traveling state changes from the stopped state to the start state, is relatively low, the correction width is set to be small. With this, it is possible to appropriately alert the occupant even when the oncoming vehicle is normally traveling at the intersection, and to more appropriately alert the occupant when the vehicle changes from the stopped state to the start state. Can be.
[0018]
In general, the speed change during acceleration of the vehicle is larger at low speeds than at high speeds. However, according to the invention of claim 5, in the above correction, the lower the current vehicle speed of the oncoming vehicle, the higher the correction. Since the width is set to a large value, when the estimated time of arrival or the vehicle speed of the oncoming vehicle reflecting the correction width is provided, the vehicle changes from a stopped state where the speed change becomes more remarkable to a start state (starting state). At the time of acceleration), the occupant can be more appropriately alerted.
[0019]
According to the sixth aspect of the present invention, the above-described correction takes into account the transition of the vehicle speed of the oncoming vehicle. For example, when the vehicle changes from a stopped state in which the speed change is generally remarkable to a start state (starting) At the time of acceleration), the occupant can be more appropriately alerted.
[0020]
According to the seventh aspect of the present invention, even if the oncoming vehicle is stopped, a small predicted arrival time is provided, so that the occupant is appropriately alerted before the oncoming vehicle starts to accelerate. be able to.
[0021]
Further, according to the invention of claim 8, when the traveling state of the oncoming vehicle changes from the stopped state to the starting state, information on the expected time of arrival of the oncoming vehicle within the intersection is not provided, and the oncoming road is not provided. The fact that cueing is impossible is provided (notified) by an alarm sound or guidance, etc., so that the occupants can be alerted and the inadvertent cueing of the vehicle to the opposite road for a right turn A danger such as a collision with an oncoming vehicle can be avoided.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a vehicle information providing device according to the present invention will be described in detail with reference to the drawings, taking a case where a vehicle travels in a left lane of a road as an example.
[0023]
FIG. 1 is a diagram exemplifying a configuration near an intersection of a vehicle information providing system to which the present invention can be applied. FIG. 2 is a block diagram showing a device configuration mounted on the vehicle and a device configuration provided on the road facility side in the vehicle information providing system according to the present embodiment.
[0024]
The vehicle information providing system shown in FIG. 1 is a system that assists in preventing a collision with an oncoming vehicle traveling on an oncoming road when the vehicle turns right (including waiting for a right turn) at an intersection. Whether or not a vehicle and / or another vehicle is present at an intersection and its surroundings is detected using an advanced cruise-assist highway system (AHS) having the system configuration shown in FIGS. 1 and 2.
[0025]
The configuration shown in FIG. 1 includes an intersection of a road R1 with at least one lane on one side where a traffic light is installed, a road R2 with at least one lane on one side intersecting with the road R1, and a vicinity of the intersection (for example, 30 m). ), A base point 11 installed on the road side of the traveling lane of the own vehicle V1 on the road R1 and a base point 11 installed on the road lane side of the other vehicle (oncoming vehicle) V2 opposite to the traveling lane of the own vehicle V1 on the road R1. A vehicle detection sensor 12 and two roadside antennas 13 installed diagonally on both the driving lane side (traveling road side) and the oncoming lane side (opposite roadside) of the vehicle V1 on the road R1 near the intersection. Is provided.
[0026]
Here, the road R1 includes a traveling road including a traveling lane in which the host vehicle V1 travels and an oncoming road including at least one lane (oncoming lane) in which the oncoming vehicle V2 travels.
[0027]
The base point 11 is a base point detector mounted on the host vehicle V1 that includes unique identification information (hereinafter, referred to as base point ID) and provided ID (described later) for identifying provided information associated with the base point ID. 71 (see FIG. 2), the own vehicle V1 detects that the vehicle V1 has passed through the base point 11 by the base point detector 71, and uses the base point ID and the provision ID at the time of passing the base point. 11
[0028]
The base point 11 is a reference position for measuring the traveling distance of the vehicle V1 from the base point 11 to the intersection. The traveling distance from the base point 11 to the intersection is a reference for specifying the provided information receiving section A1 by the roadside antenna 13.
[0029]
The vehicle detection sensor 12 detects another vehicle (oncoming vehicle) V2 existing on the road opposite to the own vehicle V1 in the predetermined detection range B1 just before the intersection from near the intermediate point (point Z) in the intersection, and detects the predetermined detection range B1. , The vehicle position information, the vehicle speed information, the vehicle type information, and the like of the other vehicle V2 are detected and transmitted to the system base station 41.
[0030]
Here, in the present embodiment, the point Z, which is near the intermediate point in the intersection, is a reference position (T = 0, T) of an estimated arrival time T of the oncoming vehicle to the intersection (details will be described later with reference to FIG. 4). L = 0).
[0031]
The roadside antenna 13 has unique identification information (hereinafter referred to as “provided ID”) and a base ID associated with the provided ID similarly to the base 11, and is detected by the base ID and the vehicle detection sensor 12 together with the provided ID. Information on the position information, vehicle speed information, vehicle type information, and road shape (the state of the intersection and its surroundings, the lane width, the number of lanes, etc.) of the other vehicle V2 transmitted to the own vehicle V1 in the provided information receiving section A1. (provide.
[0032]
That is, in the provided information receiving section A1, the road-to-vehicle communication device 36 mounted on the own vehicle V1 includes the base ID transmitted from the roadside antenna 13, the provided ID, the position information of the other vehicle V2, the vehicle speed information, the vehicle type information, and the road. The system controller 31 receives information on the shape (hereinafter, these are collectively referred to as provided information), and uses the display device 37 and / or the speaker 38 based on the received provided information to transmit the information of the vehicle V1. A control process for providing information (presenting information) to the occupant is performed. This information presentation includes, in addition to displaying images and characters using the display device 37, outputting a voice message and a warning sound from the speaker 38, and the like.
[0033]
In the above-mentioned system, contrary to the case shown in FIG. 1, the other vehicle V2 is also an information providing vehicle similar to the own vehicle V1, and the other vehicle V2 transmits the provided information of the own vehicle V1 traveling on the opposite road to the roadside. The signal is received from the antenna 13.
[0034]
Next, a functional configuration showing a device configuration mounted on the vehicle (own vehicle) V1 and a vehicle (other vehicle, oncoming vehicle) V2 and a device configuration provided on the road facility side will be described with reference to FIG. .
[0035]
In FIG. 2, the base point ID and the provision ID are input to the system controller 31 via the base point detector 71 when passing through the base point 11, and the base point ID transmitted from the system base station 41 via the roadside antenna 13. Provided information such as a provided ID, position information of other vehicles, vehicle speed information, vehicle type information, and information on road shape is input via the on-vehicle antenna 35 and the road-vehicle communication device 36.
[0036]
The system controller 31 first determines whether or not the base point ID and the provision ID received from the roadside antenna 13 match the base point ID and the provision ID acquired at the time of passing through the base point. The provision information from the roadside antenna 13 having the provision ID is provided to the occupant by screen display on the display device 37 or by outputting sound (alarm sound, synthetic sound, etc.) to the speaker 38.
[0037]
Further, the system controller 31 detects the traveling distance of the own vehicle V1 after receiving the base point ID, and determines whether the own vehicle V1 has entered the intersection based on the detected traveling distance.
[0038]
In the present embodiment, a car navigation system that performs route guidance to a destination and the like can be used for the system controller 31, the display device 37, and the speaker 38.
[0039]
Hereinafter, using the provided information obtained from the AHS system, when the vehicle V1 turns right (including waiting for a right turn) at the intersection, the other vehicle V2 arrives at the intersection as information on the other vehicle (oncoming vehicle) V2. The information provision control performed by the system controller 31 to provide (notify) the estimated time T to the occupant of the host vehicle by, for example, segment display as shown in FIG. 3 will be described.
[0040]
FIG. 4 is a flowchart illustrating an information provision control process performed by a system controller mounted on a vehicle in the vehicle information provision system according to the present embodiment.
[0041]
In FIG. 7, in step S1, the provision information is obtained by using the road-to-vehicle communication device 36 to obtain position information, vehicle speed information, and the like regarding the oncoming vehicle (V2). At this time, the system controller 31 determines that the received base point ID and provided ID are the base point 11 so that appropriate information provision (that is, information provision matching the traveling environment in which the vehicle travels) is performed in the own vehicle. It is also determined whether or not they match the base point ID and the provision ID acquired at the time of passing, and if the determination is affirmative, the position information, the vehicle speed information, etc., to which information is to be provided in the own vehicle. Recognizing the vehicle (V2), the following processing is performed.
[0042]
In step S2, of the various information included in the obtained provided information, the traveling state of the other vehicle V2 is determined in the predetermined detection range B1, for example, by waiting for a traffic light, using the position information and the vehicle speed information of the other vehicle V2. It is determined whether or not the vehicle has changed from the stopped state to the started state (hereinafter, referred to as “starting acceleration”).
[0043]
Here, as a premise of the determination in step S2, the system controller 31 temporarily stores the position information and the vehicle speed information of the other vehicle V2 up to the previous control cycle. This is performed by comparing the temporarily stored information with the information obtained in step S1 in the current control cycle or by calculating a difference.
[0044]
In step S3, the expected arrival time T at the intersection is corrected using the estimated vehicle speed V 'which is a predetermined value.
[0045]
That is, the estimated arrival time T of the oncoming vehicle at the intersection is obtained by setting the point Z as a reference position (T = 0, L = 0).
T = L / V (1),
(Where, L: distance of the oncoming vehicle from point Z near the intersection center, V: actual vehicle speed of the oncoming vehicle), but in step S3, the other vehicle V2 starts and accelerates in step S2. Since it is determined that the vehicle is in the middle, the estimated arrival time T is calculated using the estimated vehicle speed V ′ set in place of the vehicle speed V of the oncoming vehicle in the equation (1).
[0046]
In a preferred embodiment, the expected vehicle speed V ′ is, for example, 20 km / h, and the setting of the expected vehicle speed V ′ in the equation (1) in step S3 is, for example, the actual vehicle speed of the oncoming vehicle obtained in step S1. V (Vehicle speed information of the oncoming vehicle obtained in step S1) is preferably equal to the expected vehicle speed V '. The setting of the expected vehicle speed V ′ is performed, for example, when the oncoming road on which the oncoming vehicle V1 runs on the road R1 is not congested, or when a signal is installed at an intersection and the signal turns blue. This may be performed within a predetermined period of time (for example, 10 seconds).
[0047]
In step S4, since it is determined in step S2 that the other vehicle V2 is traveling normally, it is determined whether the vehicle V2 is accelerating at a predetermined acceleration or higher. The determination in this step can also be made by comparing the information temporarily stored in the system controller 31 as described above with the information obtained in step S1 in the current control cycle or by calculating the difference. If it is determined in step S4 that the other vehicle V2 is accelerating at a speed equal to or higher than the predetermined acceleration, the process proceeds to step S5. If so, the process proceeds to Step S6.
[0048]
In step S5, the expected arrival time T at the intersection is corrected based on the equation (2). That is, in this step, the following equation (2) is used for another vehicle V2 that is accelerating at an acceleration equal to or higher than a predetermined acceleration.
T = (− V + SQR (V ² + 2aL)) / a (2),
The expected arrival time T is calculated (where, V: the current actual vehicle speed of the oncoming vehicle, a: the acceleration of the oncoming vehicle, SQR (**): the square root of **).
[0049]
In step S6, an estimated arrival time T at the intersection based on the above equation (1) is calculated.
[0050]
In step S7, the estimated arrival time T after the correction in step S3 or step S5 is displayed as information provision regarding the other vehicle (oncoming vehicle) V2 when the own vehicle V1 turns right (including waiting for a right turn) in the intersection. The occupant is notified by a screen display by the device 37 or a sound output from the speaker 38.
[0051]
That is, the estimated arrival time T notified to the occupant of the host vehicle V1 in step S7 is one of the following (A) to (C).
[0052]
(A) The estimated arrival time T that is reported when the other vehicle V2 is traveling normally and is accelerating at a predetermined acceleration or more is the value calculated in step S5 by the above equation (2). In general, it is known that the speed change at the time of acceleration of a vehicle is larger at a low speed than at a high speed. However, if the estimated arrival time T is calculated using the above equation (2), Since such a change in the vehicle speed of the oncoming vehicle is taken into consideration, for example, when the vehicle changes from a stopped state in which the speed change is generally remarkable to a start state (at the time of start acceleration), the occupant's attention is more appropriately raised. be able to.
[0053]
(B) The estimated arrival time T that is reported when the vehicle is traveling normally but is smaller than the predetermined acceleration is the value calculated in step S6 by the above equation (1).
[0054]
(C) The estimated arrival time T that is notified when the other vehicle V2 is starting and accelerating is a value when the estimated vehicle speed V ′ is set in step S3 instead of the actual vehicle speed V in the equation (1). It is. During the start acceleration in which the traveling state of the oncoming vehicle changes from the stopped state to the starting state, if the estimated arrival time T is simply calculated by the above equation (1), the actual vehicle speed of the oncoming vehicle is substantially zero. However, even if the vehicle actually arrives at the intersection several seconds later, the estimated arrival time T to be calculated is a large and unrealistic value, which may cause a driver's misunderstanding. In contrast, in the present embodiment, the expected vehicle speed V 'is set in step S3, and in step 7, the expected arrival time of the oncoming vehicle within the intersection is the estimated arrival time based on the actual traveling state. This is provided (notified) by a symbol display or the like as a state corrected smaller than that of the vehicle, so that the occupants can be alerted and the inadvertent heading of the vehicle to the opposite road for a right turn A danger such as a collision with an oncoming vehicle can be avoided. That is, even when the traveling state of the oncoming vehicle changes from the stopped state to the starting state, it is possible to provide appropriate information to the occupant of the own vehicle when the own vehicle turns right in the intersection.
[0055]
In a preferred embodiment, when the running state of the other vehicle V2 is changed from the stopped state to the starting state during the start acceleration in the above step S2, the vehicle reaches the intersection of the oncoming vehicle in the above step S7. The occupant of the vehicle V1 may be notified that the cue to the oncoming road is impossible without providing information on the expected time T. In this case, it is provided (notified) by a warning sound, guidance, or the like that the cue to the oncoming road is impossible, so that the occupant can be alerted and the vehicle traveling to the oncoming road for a right turn. Danger such as collision with an oncoming vehicle due to inadvertent “starting” can be avoided. Here, “searching out” means moving to a place where the driver of the own vehicle can visually determine the traveling state of the oncoming vehicle (other vehicle) V2 at the intersection.
[0056]
Next, one mode of information notification to the occupant of the host vehicle V1 in the above step S7 in which such processing is performed will be described with reference to an example in which a screen is displayed on the display device 37.
[0057]
FIG. 3 is a diagram exemplifying a display mode performed by the own vehicle V1 in order to notify the expected arrival time T of the oncoming vehicle to the intersection by the information provision control process according to the present embodiment. As an example, FIG. FIG. 3A shows a state in which the expected arrival time T is equal to or longer than a predetermined threshold value, and "starting" for a right turn at an intersection is possible. On the other hand, the state shown in FIG. 3B in which the segment (or symbol) is displayed, the estimated arrival time T is smaller than the threshold, and the above-described cueing is impossible.
[0058]
In addition, for example, when a state in which cueing is impossible is notified to the occupant of the vehicle V1 as shown in FIG. 3B, the continuous state of the notification that the state is impossible is executed by the system controller 31. In the above-described information provision control processing (FIG. 4), if the oncoming vehicle V2 set as the information provision target in the own vehicle is switched to another vehicle (for example, a following vehicle, a passing vehicle, etc.), good.
[0059]
The notification that the cueing is impossible is not limited to the display mode illustrated in FIG. 3B, and, for example, the arrow is displayed in the maximum size, the display color is changed, Various modes such as notifying that progress is prohibited (cueing is prohibited) by an alarm sound or guidance display are assumed.
[0060]
<Modification of Embodiment>
(Modification 1)
In the above-described embodiment, when the other vehicle V2 is starting and accelerating, the expected vehicle speed V ′ is set to the equation (1) in step S3 instead of the actual vehicle speed V, and in step S7, the estimated vehicle speed V ′ is calculated in that state. Although the estimated arrival time T is notified by the segment display, in the present modification, when the distance between the other vehicle V2 and the host vehicle V1 is shorter than a predetermined distance, the expected arrival time T is corrected to be small, so that the opposite arrival time T is corrected. Even when the vehicle is stopped, a segment display is provided as shown in FIG. 3, for example, as shown in FIG. 3 so as to provide the occupant of the host vehicle V1 with an estimated arrival time when the vehicle changes to the start state. According to the first modification, the occupant can be appropriately alerted before the oncoming vehicle V2 starts and accelerates.
[0061]
(Modification 2)
In this modification, when it is determined in step S2 that the oncoming vehicle V2 is traveling normally, the expected arrival time T is not calculated based on the equation (2) in step S5. Similarly, by setting the estimated vehicle speed V ″ to the expression (1), the predicted arrival time T reported in step S7 is also corrected to be small, and the correction width is determined by the running state of the oncoming vehicle V2 in the stopped state. Is different from the above-described information provision control process (FIG. 4) in that when the vehicle changes from the start state to the start state, the value is set to a value smaller than the value (correction width) of the estimated vehicle speed V ′ set in step S3.
[0062]
In other words, according to the second modification, even when the oncoming vehicle is traveling normally (for example, passing through an intersection due to traveling at a constant speed according to a green light), the predicted arrival time that is corrected to be small is provided. Since the possibility that the speed of the oncoming vehicle greatly changes, such as during the start acceleration in which the traveling state of the oncoming vehicle changes from the stopped state to the starting state, is relatively low, the correction width is set to be small. Thereby, even when the oncoming vehicle V2 is normally traveling at the intersection, the occupant's attention can be appropriately raised, and when the stop state changes to the start state, the occupant's attention can be more appropriately raised. be able to.
[0063]
(Modification 3)
In the above-described information provision control process (FIG. 4), the occupant of the host vehicle is alerted when the host vehicle turns right in the intersection by appropriately correcting the estimated arrival time T according to the traveling state of the oncoming vehicle V2. did. On the other hand, in the present modification, when the vehicle speed of the oncoming vehicle V2 is provided so that the occupant of the own vehicle V1 can recognize the vehicle speed of the oncoming vehicle V2, the traveling state of the oncoming vehicle is changed from the stopped state instead of correcting the estimated arrival time T. When the vehicle changes to the start state (during start acceleration), the vehicle speed of the oncoming vehicle is enlarged and corrected (that is, corrected to a large value) in comparison with the actual vehicle speed of the oncoming vehicle obtained by the AHS, and provided.
[0064]
According to this modified example, during the start acceleration of the oncoming vehicle, the vehicle speed of the oncoming vehicle is largely corrected (enlargement correction) as compared with the vehicle speed indicating the actual running state, and a symbol display or the like is performed. Is provided (notified), so that the occupant can be alerted, and the danger of collision with the oncoming vehicle V2 due to inadvertent cueing of the vehicle V1 to the oncoming road for a right turn is avoided. can do.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a configuration near an intersection of a vehicle information providing system to which the present invention can be applied;
FIG. 2 is a block diagram showing a device configuration mounted on the vehicle and a device configuration provided on a road facility side in the vehicle information providing system according to the embodiment.
FIG. 3 is a diagram exemplifying a display mode performed by a host vehicle to notify an expected arrival time of an oncoming vehicle to an intersection by an information provision control process according to the embodiment;
FIG. 4 is a flowchart illustrating an information provision control process performed by a system controller mounted on the vehicle in the vehicle information provision system according to the embodiment.
[Explanation of symbols]
11: Base point,
12: Vehicle detection sensor,
13: Roadside antenna,
31: system controller,
35: In-vehicle antenna,
36: Road-to-vehicle communication device,
37: display device,
38: speaker,
41: system base station,
71: Base point detector

Claims (8)

A vehicle information providing device that provides information on an oncoming vehicle received from a road facility to an occupant of the vehicle when the vehicle turns right within an intersection,
When the occupant of the own vehicle provides the estimated time of arrival of the oncoming vehicle within the intersection in a recognizable manner, when the traveling state of the oncoming vehicle changes from the stopped state to the start state, the expected arrival of the oncoming vehicle within the intersection is predicted. An information providing device for a vehicle, comprising: an information providing unit that provides time as a state corrected to be smaller than an estimated arrival time based on an actual traveling state of the oncoming vehicle. A vehicle information providing device that provides information on an oncoming vehicle received from a road facility to an occupant of the vehicle when the vehicle turns right within an intersection,
When providing the vehicle speed of the oncoming vehicle so that the occupant of the own vehicle can recognize the vehicle speed, when the traveling state of the oncoming vehicle changes from the stopped state to the start state, the vehicle speed of the oncoming vehicle is increased from the actual vehicle speed of the oncoming vehicle. An information providing device for a vehicle, comprising: an information providing unit that provides a corrected state. The information providing means,
The expected time of arrival at the intersection when the oncoming vehicle is traveling normally is also corrected to be small so that the occupant of the host vehicle can recognize the time, and the correction width is determined when the running state of the oncoming vehicle is stopped. The vehicle information providing apparatus according to claim 1, wherein the value is set to a value smaller than a correction width when the state changes from the state to the start state. The information providing means,
The vehicle speed when the oncoming vehicle is traveling normally is also expanded and corrected so that the occupant of the own vehicle can provide the recognizable range, and the correction width changes from the stopped state to the start state when the oncoming vehicle is running. 3. The information providing apparatus for a vehicle according to claim 2, wherein the value is set to a value smaller than the correction width when the correction is performed. The information providing means,
The vehicle information providing apparatus according to claim 3, wherein the correction width is set to a larger value as the current vehicle speed of the oncoming vehicle is lower. The information providing means,
The vehicle information providing apparatus according to claim 1, wherein the correction is performed in consideration of a transition of a vehicle speed of the oncoming vehicle. The information providing means,
Even if the oncoming vehicle is in a stopped state, the occupant of the host vehicle can provide the estimated arrival time when the vehicle changes to the start state by correcting the estimated arrival time to be small. Item 4. The vehicle information providing device according to Item 1. A vehicle information providing device that provides information on an oncoming vehicle received from a road facility to an occupant of the vehicle when the vehicle turns right within an intersection,
When the traveling state of the oncoming vehicle changes from the stopped state to the starting state, the host vehicle informs that the oncoming vehicle cannot head to the oncoming road without providing information on the estimated time of arrival at the intersection. An information providing device for a vehicle, comprising: an information providing means for providing an occupant in a recognizable manner.

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