Driving assisting device

Abstract

In a driving assisting device 100 in which a receiver 130 acquires the time-series traffic signal information regarding a lighting state of a traffic signal and a display 114 and a speaker 116 provide the lighting time information regarding a time remaining until a red signal of the traffic signal changes, the display 114 and the speaker 116 provide the lighting time information regarding the time remaining until the red signal of the traffic signal changes only when it is confirmed from the traffic signal information that a signal after change of the red signal permits traveling of the host vehicle. Accordingly, for example, for a light color change or the like in which an arrow lamp other than the traveling direction lights up after a red signal, a red signal waiting time is not displayed. This makes it possible to suppress factors inducing a careless driver to start driving.

Description

technical field [0001] The present invention relates to a driving assistance device, and more particularly, to a driving assistance device that performs driving assistance based on time-series signal information related to the lighting state of a signal. Background technique [0002] A device is proposed that provides driving assistance based on time-series signal information related to the lighting state of the signal. For example, Patent Document 1 discloses a system in which a DSRC transmitter for transmitting signal information to a signal is provided and an on-vehicle device is mounted on a vehicle. In this system, the signal information is received by the DSRC receiver of the vehicle-mounted machine, and the lighting status and change time of the signal machine are obtained from the received information, so that the lighting status and changing time of the signal machine are displayed on the vehicle-mounted machine. The display device enables the driver to travel afte...

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned technology, when the remaining time of the red signal of the traffic light is displayed uniformly, the driver may think that it is possible to proceed even when passing the traffic light is actually prohibited.

That is, in the above-mentioned technology, the driver may think that after the red light signal waiting time is over, it is possible to proceed to the intersection where the arrow lights other than the direction of travel are lighting.

[0005] On the other hand, in the above-mentioned technology, when the red light signal waiting time is displayed on the navigation system screen, although the own vehicle does not stop, the driver may also reduce his attention to the vehicle ahead due to the red light signal waiting time being displayed.

[0006] Here, when a complete stop is set as the display start condition of the red light signal waiting time, since the driver wants to stop as smoothly as possible with respect to the red light signal, sometimes even though the driver slows down the speed to the point where the driver actually wants to stop The slow speed, however, the waiting time of the red light signal is not displayed, causing discomfort to the driver

That is, in the above-mentioned technology, there may be a situation in which the red signal waiting time of the system cannot be displayed until the own vehicle comes to a complete stop, and the time during which the red light signal waiting time can be displayed may be shortened.

[0007] Therefore, when only the condition that the host vehicle becomes below a certain speed is set as the display start condition of the red signal waiting time, in this case, although the host vehicle does not stop, the display of the red signal waiting time may make the driver feel uncomfortable. The driver reduces attention to the vehicle in front, and the driver may not pay attention to the approach of the vehicle in front

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