JP2014096168A - Driving support apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driving support apparatus configured to prevent a driver from carelessly starting a vehicle.SOLUTION: In a driving support apparatus 100, a receiving device 130 acquires time-series signal information on a lighting state of a traffic light, and a display 114 and a speaker 116 give lighting-time information on the time left before a red light of the traffic light changes. The display 114 and the speaker 116 give the lighting-time information on the time left before a red light of the traffic light changes only when it is clear from the signal information that the signal after the red light permits a vehicle to move. When the traffic light changes from the red light to an arrow traffic light indicating a direction other than an advancing direction, a red-light standby time is not displayed, thereby preventing a driver from carelessly starting the vehicle.

Description

  The present invention relates to a driving support device, and more particularly to a driving support device that provides driving support based on time-series traffic signal information related to the lighting state of a traffic signal.

  There has been proposed a device that supports driving based on time-series traffic signal information related to the lighting state of traffic signals. For example, Patent Document 1 discloses a system in which a DSRC transmitter that transmits traffic signal information is provided in a traffic signal, and a vehicle-mounted device is mounted on the vehicle. In this system, the signal information is received by the DSRC receiver of the in-vehicle device, the lighting state and change timing of the signal device are obtained from the received information, and the lighting state and change timing of the signal device are displayed on the display device of the in-vehicle device. Thus, the driver can travel after recognizing the time until the lighting state of the traffic light changes.

JP 2004-171459 A

  However, in the above technique, when the remaining time of the red signal of the traffic light is uniformly displayed, even if it is actually prohibited to pass the traffic light, the driver is assumed to be able to start. There is a possibility that. That is, in the above technique, after the red light waiting time is over, there is a possibility that the driver may think that it is possible to start toward the intersection where the arrow lamps other than the traveling direction are lit.

  On the other hand, in the above technology, when the red light waiting time is displayed on the screen of the navigation system, the red light waiting time is displayed even though the own vehicle does not stop, thereby Attention may be reduced.

  Here, if the complete stop is the start condition for displaying the red light waiting time, the driver tries to stop as gently as possible with respect to the red light, so the speed is reduced to the slow speed that the driver thinks the vehicle has actually stopped. In spite of the decrease, the red light waiting time may not be displayed and the driver may feel uncomfortable. That is, with the above technology, the system may not be able to display the red light waiting time until the host vehicle completely stops, and the time during which the red light waiting time can be displayed may be shortened. .

  Therefore, if the start condition of the display of the red light waiting time is simply the case where the host vehicle is below a certain vehicle speed, the red light waiting time is also displayed in this case even though the own vehicle does not stop. The driver's attention to the vehicle ahead may be reduced, and the driver may not notice the approach to the vehicle ahead.

  The present invention has been made in consideration of such circumstances, and an object of the present invention is to provide a driving support device capable of suppressing the inadvertent driver's starting. In addition, an object of the present invention is a driving support device capable of suppressing the display of the red light waiting time until the host vehicle is completely stopped and the reduction of the driver's attention to the preceding vehicle. It is to provide.

  The present invention provides an acquisition unit that acquires time-series traffic signal information related to a lighting state of a traffic signal, and information that provides lighting time information regarding a remaining time until a red signal of the traffic signal changes based on the traffic signal information acquired by the acquisition unit. Providing means, the information providing means until the red signal of the traffic light changes only when it is known from the traffic signal information that the signal after the change of the red signal is allowed to travel It is the driving assistance device which provides the lighting time information regarding the remaining time.

  According to this configuration, in the driving support device in which the acquisition unit acquires time-series signal information regarding the lighting state of the traffic light, and the information providing unit provides the lighting time information regarding the remaining time until the red signal of the traffic light changes, The information providing means only turns on the remaining time until the red signal of the traffic light changes only when it is determined from the traffic signal information that the signal after the change of the red signal is permitted to travel the host vehicle. In order to provide information, for example, a red signal waiting time is not displayed for a change in lamp color in which an arrow lamp other than the traveling direction is lit next to the red signal. Can be suppressed.

  In addition, the present invention provides an acquisition unit that acquires time-series traffic signal information related to the lighting state of the traffic signal, and lighting time information regarding the remaining time until the red signal of the traffic signal changes based on the traffic signal information acquired by the acquisition unit The information providing means is a driving support device that provides lighting time information regarding the remaining time until the red signal of the traffic light changes only when the condition that the stop of the host vehicle is predicted is satisfied. is there.

  According to this configuration, in the driving support device in which the acquisition unit acquires time-series signal information regarding the lighting state of the traffic light, and the information providing unit provides the lighting time information regarding the remaining time until the red signal of the traffic light changes, The information providing means provides the lighting time information on the remaining time until the red signal of the traffic light changes only when the condition that the stop of the host vehicle is predicted is satisfied, so the driver thinks the vehicle has actually stopped Despite the speed decreasing to the slow speed, the red signal waiting time is not displayed and the driver feels uncomfortable or the own vehicle does not stop, but the red signal waiting time is displayed. This prevents the driver's attention to the front vehicle from decreasing, and the red light waiting time cannot be displayed until the host vehicle stops completely, and the driver's attention to the front vehicle decreases. It is possible to suppress the Rukoto.

  The information providing means may change the manner in which the lighting time information is provided according to the reliability that the signal after the change of the red signal permits the traveling of the host vehicle from the traffic signal information. Is preferred.

  According to this configuration, the information providing means provides the lighting time information according to the reliability determined from the traffic signal information that the signal after the change of the red signal permits the traveling of the host vehicle. In order to change the mode, for example, when the reliability of the signal after the change of the red signal is that the vehicle is allowed to travel is low, the information providing means displays the lighting time information in the same manner as when the reliability is high. This can prevent the driver from misunderstanding.

  In this case, it is preferable that the condition that the stop of the host vehicle is predicted is that the vehicle speed of the host vehicle is equal to or less than a threshold value and that the brake petal of the host vehicle is stepped on.

  According to this configuration, since the vehicle speed of the host vehicle is equal to or lower than the threshold value and the brake petal of the host vehicle is being stepped on, the stop of the host vehicle is reliably predicted. It becomes possible to do.

  Further, it is preferable that the condition for predicting the stop of the host vehicle is changed according to the road gradient on which the host vehicle is located.

  According to this configuration, since the condition for predicting the stop of the host vehicle is changed according to the road gradient where the host vehicle is located, the stop of the host vehicle can be reliably predicted according to the road gradient. Become.

  According to the driving support apparatus of the present invention, it is possible to suppress the inadvertent driver's starting induction. In addition, according to the driving support device of the present invention, it is possible to suppress the display of the red light waiting time until the host vehicle is completely stopped and the reduction of the driver's attention to the preceding vehicle. Become.

It is a block diagram which shows the structure of the driving assistance device which concerns on embodiment. It is a flowchart which shows operation | movement of the driving assistance device which concerns on embodiment. It is a figure which shows the judgment of the possibility of implementation of the kind of signal cycle and signal waiting time notification service. It is a figure which shows the judgment of the possibility of implementation of the kind of signal cycle and signal waiting time notification service. It is a figure which shows the judgment of the possibility of implementation of the kind of signal cycle and signal waiting time notification service. It is a figure which shows the judgment of the possibility of implementation of the kind of signal cycle and signal waiting time notification service. It is a figure which shows an example of the display screen at the time of implementation of a signal waiting time notification service.

  Embodiments of a driving assistance apparatus according to the present invention will be described below with reference to the drawings. In the drawings to be referred to, FIG. 1 is a block diagram showing a configuration of a driving support apparatus according to an embodiment.

  As shown in FIG. 1, the driving support device 100 of this embodiment includes an infrastructure cooperation ECU 110 that includes a GPS 112, a display 114, a speaker 116, a vehicle speed sensor 117, a radar 118, a camera 119, a storage device (HDD) 120, a brake ECU 122, The brake pedal sensor 123, the accelerator ECU 126, and the receiver 130 are connected. The driving support device according to the present embodiment coordinates the time series traffic signal information related to the lighting state of the traffic signal received by the receiver 130 from the roadside facility such as an optical beacon and the navigation information by the GPS 112 and the storage device 120, thereby driving the vehicle. It is a device for providing support.

  The GPS (Global Positioning System) 112 is for receiving signals from a plurality of GPS sanitations with a GPS receiver and measuring the position of the host vehicle from the difference of each signal.

  As will be described later, the display (information providing means) 114 is for providing the driver with lighting time information regarding the remaining time until the red signal of the traffic light changes due to the screen display. The speaker (information providing means) 116 is for providing the driver with lighting time information regarding the remaining time until the red signal of the traffic light changes by voice.

  The vehicle speed sensor 117 is for detecting the vehicle speed of the host vehicle by detecting the rotational speed of the axle.

  The radar 118 is used to obtain the speed (including relative speed) of the preceding vehicle ahead of the host vehicle, the deceleration, the inter-vehicle distance from the host vehicle, and the inter-vehicle time with the host vehicle. The radar 118 is a sensor that irradiates an electromagnetic wave such as a millimeter wave in the forward direction, receives a reflected wave that returns after being reflected by an object, and detects the vehicle speed, deceleration, inter-vehicle distance, and inter-vehicle time of the preceding vehicle.

  The camera 119 is used to obtain the speed of the preceding vehicle (including relative speed), the deceleration, the inter-vehicle distance from the own vehicle, and the inter-vehicle time with the own vehicle by imaging the preceding vehicle ahead of the own vehicle. .

  The brake pedal sensor 123 is for detecting whether or not the brake pedal is being depressed or the depression force of the brake pedal.

  The receiving device (acquisition means) 130 is specifically an optical beacon receiver or a vehicle-to-vehicle communication device, and receives time-series signal information regarding the lighting state of the traffic light transmitted from the optical beacon transmitter of the roadside facility or other vehicle. It is for acquisition. The time-series traffic signal information regarding the lighting state of the traffic signal includes lighting time information regarding the remaining time until the red signal of the traffic signal changes.

  A storage device (HDD: hard disk drive) has a map information DB 121 in which map information is recorded, and the infrastructure cooperation ECU is driven by the vehicle along with the positioning information of the vehicle obtained by the GPS 112. This is for acquiring information on the route, the travel distance, and the like. Alternatively, the storage device 120 records time-series traffic signal information relating to past lighting states of traffic signals at each location.

  The infrastructure cooperation ECU 110 includes time-series traffic signal information regarding the lighting state of the traffic signal received by the receiver 130 from the optical beacon transmitter, the route on which the host vehicle obtained from the positioning information of the GPS 112 and the map information DB 121, Information on distance, etc., vehicle speed of own vehicle acquired by vehicle speed sensor 117, information on front vehicle acquired by radar 118 and camera 119, and lighting status of past traffic lights at each location recorded in storage device 120 Based on the time-series traffic signal information, the display 114 and the speaker 116 provide the driver with lighting time information regarding the remaining time until the red signal of the traffic signal changes, and the brake control by the brake ECU 122 and the accelerator control by the accelerator ECU Driving assistance by doing Do.

  The brake ECU 122 is for driving the brake actuator 124 and performing brake control based on a command from the infrastructure cooperation ECU 110. The accelerator ECU 126 is for driving the accelerator actuator 128 and performing brake control based on a command from the infrastructure cooperation ECU 110.

  Hereinafter, the operation of the driving support apparatus 100 of the present embodiment will be described. FIG. 2 is a flowchart illustrating the operation of the driving support apparatus according to the embodiment. As shown in FIG. 2, the infrastructure cooperation ECU 110 receives time-series traffic signal information regarding the lighting state of traffic lights from the optical beacon transmitter of the roadside facility or the inter-vehicle communication device by the receiver 130, or the storage device 120. It is assumed that time-series traffic signal information relating to past lighting states of traffic signals at each location recorded in the above is acquired.

  As a premise, the infrastructure cooperation ECU 110 determines whether a service for notifying a signal waiting time is possible based on the acquired traffic signal information (S11). When the remaining time until the red signal of the traffic light changes is shorter than a predetermined time (for example, 1 to 5 seconds), or when the remaining time until the red signal of the traffic signal changes cannot be specified, the infrastructure cooperation ECU 110 The service notifying the signal waiting time is not executed (S11).

  When the service that notifies the signal waiting time is possible based on the acquired traffic signal information (S11), the infrastructure cooperation ECU 110 determines whether or not the signal after the change of the red signal permits passage of the host vehicle. Determine (S12). The infrastructure cooperation ECU 110 identifies a target red signal from the acquired traffic signal information, and when the signal next to the red signal is, for example, as shown below, a service for notifying the signal waiting time can be implemented. Judge that there is.

  3 to 6 are diagrams illustrating the determination of the type of signal cycle and the availability of the signal waiting time notification service. As shown in FIG. 3, the signal next to the target red signal is a blue signal (including a case where the yellow signal is turned on to ensure safety), or an arrow lamp in the traveling direction of the host vehicle. In the case of an arrow lamp device in a straight direction (for example, an arrow lamp device that permits traveling in all directions), the infrastructure coordination ECU 110 determines that a service for notifying a signal waiting time is feasible.

  As shown in FIG. 4, when the signal next to the target red signal is unknown from the acquired traffic signal information, the infrastructure coordination ECU 110 determines that the service for notifying the signal waiting time cannot be performed. To do. In addition, as shown in FIG. 5, when the signal next to the target red signal is an arrow lamp that allows only traffic other than the red signal and the traveling direction of the host vehicle, the infrastructure coordination ECU 110 waits for the signal. It is determined that the service for notifying time cannot be implemented.

  As shown in FIG. 6, when the lighting times of a plurality of red signals are known from the acquired traffic signal information, and the next signals after some of the red signals are unknown, the infrastructure cooperation ECU 110 For a portion where the signal next to the red signal is unknown, it is determined that the service for notifying the signal waiting time cannot be performed.

  The infrastructure cooperation ECU 110 determines whether or not the own vehicle has reached the intersection of the target traffic signal while the red light is on (S13). In this case, whether or not the traffic light has been reached while the red signal is lit is determined by the acquired traffic signal information, the position of the own vehicle acquired from the information of the GPS 112 and the map information DB 121, the remaining distance to the stop line, or an intersection on the way Judgment based on the presence or absence of

  The infrastructure cooperation ECU 110 detects whether or not the vehicle speed of the host vehicle detected by the vehicle speed sensor 117 is equal to or less than a threshold value (1 to 5 km / h) (S14). The infrastructure cooperation ECU 110 determines whether or not the brake pedal has been depressed by the brake pedal sensor 123 for a predetermined time (0.1 to 0.3 seconds) or longer (S15).

The infrastructure cooperation ECU 110 is in a state where the vehicle speed is equal to or less than the threshold and the brake pedal is depressed except when the vehicle speed of the host vehicle is equal to or less than the threshold (S14) and the brake pedal is depressed (S15). (S16). On the other hand, when the vehicle speed of the host vehicle is equal to or lower than the threshold value (S14) and the brake pedal is depressed (S15), the infrastructure cooperation ECU 110 uses the display 114 and the speaker 116 until the red signal of the traffic light changes. The time is displayed (S17).

  FIG. 7 is a diagram illustrating an example of a display screen when the signal waiting time notification service is performed. As shown in FIG. 7, the screen display 200 of the display 114 has a 2D map display showing the current position of the host vehicle on the left half, and a 3D near the intersection of the traffic signal that the host vehicle is about to pass on the right half. A driver's view display 220 is arranged.

  Since it is difficult for the driver to determine whether or not the signal waiting time notification service can be performed, in this embodiment, the signal waiting time notification service is performed during the screen display 200 so that the driver can easily understand. Is displayed, and the remaining time of the red signal is displayed in the signal remaining time display icon 240 at intervals of 5 seconds. Alternatively, whether or not the signal waiting time notification service can be performed may be notified by the speaker 116 in advance.

  In the present embodiment, a time during which the remaining time of the red signal can be displayed is displayed in the screen display 200. For example, as shown in FIG. 6 above, when the lighting times of a plurality of red signals are known from the acquired traffic signal information, and when the next signal of some red signals is unknown, In the signal cycle display bar 250, the acquired traffic signal information and the time during which the remaining time of the red signal can be displayed from when the traffic signal information is acquired are displayed in the acquired signal cycle time display 251.

  In addition, when it is difficult to predict the driver's behavior with an arrow lamp, there is a possibility that the next light color of the red signal may not allow the vehicle to travel, or the next light color of the red signal Even if the vehicle itself is allowed to travel, if the lighting time is unknown, the reliability that the vehicle can travel after the end of the red light will be low. When the signal waiting time is displayed until the end of the red signal, the display of the signal waiting time may be terminated earlier before the end of the red signal. Alternatively, in the above case, the signal waiting time may not be displayed.

  Alternatively, in the above case, when the remaining time of the red signal is updated and displayed every several seconds, the update interval may be lengthened. For example, the remaining red signal time is normally displayed at 5 second intervals, and in the above case, it can be displayed at 10 second intervals. Alternatively, the remaining time of the red signal may not be updated and displayed, but only the remaining time when the remaining time of the red signal is displayed may be displayed.

  Alternatively, the display 114 may not display the signal waiting time when the receiving device 130 acquires the traffic signal information, but may display the signal waiting time when the host vehicle can travel. As a result, the remaining time until the red signal changes can be displayed to prevent the driver from misunderstanding that the vehicle can always travel.

  On the other hand, as a method of determining whether or not to display the remaining time of the red signal by predicting that the driver notices the presence of the preceding vehicle and stops the host vehicle, the above-described vehicle speed is less than a predetermined value. In addition to the brake pedal being depressed, there are the following methods.

  That is, the vehicle speed of the host vehicle detected by the vehicle speed sensor 117 is less than or equal to the threshold, (1) the distance to the preceding vehicle is greater than a certain value, and (2) the distance to the stop line of the traffic light is greater than or equal to a certain value ( 3) When the transmission is downshifted, (4) When the accelerator is turned off (Throttle opening 0), satisfy any one of (1) to (4). It is good also as conditions to implement.

  Alternatively, the vehicle speed of the host vehicle detected by the vehicle speed sensor 117 is not more than a threshold value, and (1) the distance to the preceding vehicle is not less than a certain value, and (2) the distance to the stop line of the traffic light is not less than a certain value. Satisfying all the conditions may be a condition for displaying the remaining time of the red signal.

  Note that the distance to the preceding vehicle in the above condition (1) can be determined based on the detection result by the laser 118 and the camera 119 or information obtained by the inter-vehicle communication by the receiving device 130.

  In addition, the method of determining whether or not to display the remaining time of the red signal by predicting that the driver notices the presence of the preceding vehicle and stops the host vehicle is changed according to the road gradient. Also good. For example, the criterion for predicting that the host vehicle stops at an uphill intersection may be moderated, and the criterion for predicting that the host vehicle may stop at a downhill intersection may be tightened.

  Alternatively, on the uphill, the vehicle speed of the host vehicle detected by the vehicle speed sensor 117 is equal to or lower than the threshold value, and the accelerator is OFF. In the downhill, the vehicle speed of the host vehicle detected by the vehicle speed sensor 117 is equal to or lower than the threshold value, and the brake is turned on. It may be a condition for displaying the remaining time. Alternatively, the threshold of the distance to the preceding vehicle and the threshold of the distance to the stop line of the traffic light may be changed according to the road gradient.

  Returning to FIG. 2, when the service termination condition is satisfied, the infrastructure coordination ECU 110 terminates the service (S18). The service end condition in this case is acquired when the vehicle speed becomes a certain value (1 to 5 km / h) or more, when the own vehicle moves out of the service area, or when the driver selects the service end setting. Possible cases include when the traffic signal information expires and when the driver steps on the accelerator pedal.

  In this embodiment, the receiving device 130 acquires time-series traffic signal information related to the lighting state of the traffic light, and the driving support device provides the lighting time information regarding the remaining time until the display 114 and the speaker 116 change the red signal of the traffic light. In 100, the display 114 and the speaker 116 indicate that the red signal of the traffic light is changed only when it is determined from the traffic signal information that the signal after the change of the red signal is permitted to run the vehicle. In order to provide lighting time information related to the remaining time, for example, the red signal waiting time will not be displayed for a change in lamp color, etc., in which an arrow lamp other than the traveling direction lights after the red signal. It is possible to suppress the triggering of the start of a driver.

  In the driving support device 100 in which the receiving device 130 acquires time-series traffic signal information regarding the lighting state of the traffic light and the display 114 and the speaker 116 provide lighting time information regarding the remaining time until the red signal of the traffic light changes, the display 114 The speaker 116 provides the lighting time information regarding the remaining time until the red signal of the traffic light changes only when the condition that the stop of the host vehicle is predicted is satisfied. Despite the speed decreasing to the slow speed, the red signal waiting time is not displayed and the driver feels uncomfortable or the own vehicle does not stop, but the red signal waiting time is displayed. By doing so, the driver's attention to the vehicle ahead is reduced, and the red light waiting time cannot be displayed until the vehicle stops completely. It and, it is possible to suppress the attention to the vehicle ahead of the driver is reduced.

  Further, according to the present embodiment, the display 114 and the speaker 116 are turned on according to the reliability in which the signal after the change of the red signal permits the traveling of the host vehicle from the traffic signal information. In order to change the manner in which the time information is provided, for example, when the reliability after the change of the red signal is that the vehicle is allowed to travel, the display 114 and the speaker 116 are highly reliable. By providing the lighting time information in the same manner as when, it is possible to prevent the driver from misunderstanding.

  In the present embodiment, since the vehicle speed of the host vehicle is equal to or lower than the threshold value and the brake petal of the host vehicle is stepped on is a condition for predicting the stop of the host vehicle. It becomes possible to predict.

  Furthermore, according to the present embodiment, the condition for predicting the stop of the host vehicle is changed according to the road gradient on which the host vehicle is located. Therefore, the stop of the host vehicle is reliably predicted according to the road gradient. Is possible.

  Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made.

  The present invention makes it possible to suppress inadvertent driver start. Further, according to the present invention, it is possible to suppress the display of the red light waiting time until the host vehicle is completely stopped and the reduction of the driver's attention to the preceding vehicle.

  DESCRIPTION OF SYMBOLS 100 ... Driving assistance device, 110 ... Infrastructure cooperation ECU, 112 ... GPS, 114 ... Display, 116 ... Speaker, 117 ... Vehicle speed sensor, 118 ... Radar, 119 ... Camera, 120 ... Storage device (HDD), 121 ... Map information DB 122 ... Brake ECU, 123 ... Brake pedal sensor, 124 ... Brake actuator, 126 ... Accelerator ECU, 128 ... Accelerator actuator, 130 ... Receiver, 200 ... Screen display, 210 ... 2D map display, 220 ... 3D driver's view display 230 ... Service execution display icon, 240 ... Signal remaining time display icon, 250 ... Signal cycle display bar, 251 ... Acquired signal cycle time display.

The present invention provides acquisition means for acquiring time-series signal information relating to the lighting state of a traffic light, and information that provides lighting time information relating to the remaining time until the red light of the traffic light changes based on the traffic signal information acquired by the acquisition means. Providing means, the information providing means is a signal after the change of the red signal is a blue signal or an arrow lamp in the traveling direction of the host vehicle, the vehicle speed of the host vehicle is below a threshold, and
This is a driving support device that provides lighting time information related to the remaining time until the red signal of the traffic light changes only when the brake pedal of the host vehicle is depressed .

According to this configuration, in the driving support device in which the acquisition unit acquires time-series traffic signal information regarding the lighting state of the traffic signal, and the information providing unit provides the lighting time information regarding the remaining time until the red signal of the traffic signal changes, The information providing means is a case where the signal after the change of the red signal is a blue signal or an arrow lamp in the traveling direction of the own vehicle, the vehicle speed of the own vehicle is equal to or less than a threshold value, and the brake pedal of the own vehicle is stepped on For example, in order to provide lighting time information regarding the remaining time until the red signal of the traffic light changes, for example, for red color changes, etc. Since the signal waiting time is not displayed, it is possible to suppress the inadvertent driver's starting.

In addition, the present invention provides acquisition means for acquiring time-series signal information relating to the lighting state of the traffic light, and lighting time information relating to the remaining time until the red signal of the traffic light changes based on the traffic signal information acquired by the acquisition means. The information providing means is a driving support device that provides lighting time information regarding the remaining time until the red signal of the traffic light changes only when the condition that the stop of the host vehicle is predicted is satisfied. is there.

According to this configuration, in the driving support device in which the acquisition unit acquires time-series traffic signal information regarding the lighting state of the traffic signal, and the information providing unit provides the lighting time information regarding the remaining time until the red signal of the traffic signal changes, The information providing means provides the lighting time information on the remaining time until the red signal of the traffic light changes only when the condition that the stop of the host vehicle is predicted is satisfied, so the driver thinks the vehicle has actually stopped Despite the speed decreasing to the slow speed, the red signal waiting time is not displayed and the driver feels uncomfortable or the own vehicle does not stop, but the red signal waiting time is displayed. By doing so, the driver's attention to the vehicle ahead is prevented from decreasing, the red light waiting time cannot be displayed until the host vehicle stops completely, and the driver's attention to the vehicle ahead is reduced. It becomes possible to suppress that.

Claims (5)

An acquisition means for acquiring time-series traffic signal information relating to the lighting state of the traffic signal;
Information providing means for providing lighting time information related to the remaining time until the red signal of the traffic light changes based on the traffic light information acquired by the acquisition unit;
With
The information providing means is the remaining until the red signal of the traffic light changes only when it is determined from the traffic signal information that the signal after the change of the red traffic light is to allow the vehicle to travel. A driving support device that provides lighting time information related to time. An acquisition unit for acquiring time-series traffic signal information related to the lighting state of the traffic signal;
Information providing means for providing lighting time information related to the remaining time until the red signal of the traffic light changes based on the traffic light information acquired by the acquisition unit;
With
The said information provision means is a driving assistance device which provides the lighting time information regarding the remaining time until the red signal of the said traffic light changes, only when the conditions which the stop of the own vehicle is estimated are satisfied.   The information providing means provides the lighting time information according to the reliability determined from the traffic signal information that the signal after the change of the red signal is permitted to travel the host vehicle. The driving support device according to claim 1 to be changed.   The driving assistance device according to claim 2, wherein the condition for predicting the stop of the host vehicle is that a vehicle speed of the host vehicle is equal to or less than a threshold value and a brake petal of the host vehicle is stepped on.   The driving assistance device according to claim 2 or 4, wherein the condition for predicting the stop of the host vehicle is changed according to a road gradient on which the host vehicle is located.

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