Vehicle recognition notification apparatus and vehicle recognition notification system

1. A vehicle recognition notification apparatus mounted on a subject vehicle comprising:

a recognition information reception processing section that receives a recognition information signal transmitted from another vehicle and indicating that a driver of the other vehicle recognizes the subject vehicle;

an another-driver recognition state determination section that determines whether the driver of the other vehicle recognizes the subject vehicle based on the recognition information signal received by the recognition information reception processing section;

an informing control section that informs a driver of the subject vehicle of a result of a determination made by the another-driver recognition state determination section based on the recognition information signal;

a subject-driver recognition state determination section that determines whether the driver of the subject vehicle recognizes a predetermined other vehicle;

a recognition information transmission processing section that transmits to the other vehicle a recognition information signal indicating whether the driver of the subject vehicle recognizes the other vehicle, based on a result of a determination made by the subject-driver recognition state determination section;

a subject-vehicle position acquisition section that acquires a position of the subject vehicle;

a vehicle information reception processing section that receives vehicle information transmitted by the other vehicle and including information to specify a position of the other vehicle;

an another-vehicle position acquisition section that acquires the position of the other vehicle based on the vehicle information received by the vehicle information reception processing section; and

a visual line detection section that detects a visual line direction of the driver of the subject vehicle,

wherein:

the subject-driver recognition state determination section determines whether the driver of the subject vehicle recognizes the other vehicle, based on the visual line direction detected by the visual line detection section, the position of the subject vehicle acquired by the subject-vehicle position acquisition section, and the position of the other vehicle acquired by the another-vehicle position acquisition section;

the another-driver recognition state determination section determines whether the subject vehicle is present in a predetermined viewable range of the other vehicle, based on the position of the subject vehicle acquired by the subject-vehicle position acquisition section and the position of the other vehicle acquired by the another-vehicle position acquisition section;

the another-driver recognition state determination section determines that a recognition state indicating whether the driver of the other vehicle recognizes the subject vehicle is unclear when not receiving the recognition information signal from the other vehicle within a particular period of time after the determination that the subject vehicle is present in the viewable range of the other vehicle;

the another-driver recognition state determination section determines that the driver of the other vehicle recognizes the subject vehicle when receiving from the other vehicle the recognition information signal indicating that the driver of the other vehicle recognizes the subject vehicle within a particular period of time after the determination that the subject vehicle is present in the viewable range of the other vehicle; and

the another-driver recognition state determination section determines that the driver of the other vehicle does not recognize the subject vehicle when receiving from the other vehicle the recognition information signal indicating that the driver of the other vehicle does not recognize the subject vehicle within a particular period of time after the determination that the subject vehicle is present in the viewable range of the other vehicle.

2. The vehicle recognition notification apparatus according to claim 1 , wherein:

the subject-driver recognition state determination section determines whether the other vehicle is present in a predetermined viewable range of the subject vehicle, based on the position of the subject vehicle acquired by the subject-vehicle position acquisition section and the position of the other vehicle acquired by the another-vehicle position acquisition section; and

the subject-driver recognition state determination section determines whether the driver of the subject vehicle recognizes the other vehicle when determining that the subject vehicle is present in a viewable range of the other vehicle.

3. The vehicle recognition notification apparatus according to claim 1 , further comprising:

a target-vehicle setting section that sets, as a target vehicle, the other vehicle to be a target for determination made by the subject-driver recognition state determination section among a plurality of other vehicles present on a periphery of the subject vehicle,

wherein:

the subject-driver recognition state determination section determines whether the driver of the subject vehicle recognizes the other vehicle when the other vehicle set as the target vehicle by the target-vehicle setting section is present in the viewable range of the subject vehicle; and

the target-vehicle setting section sets as the target vehicle the other vehicle, a traveling direction of which and a traveling direction of the subject vehicle forms an angle within a particular angle and which is present within a predetermined target-vehicle setting distance, among the plurality of the other vehicles.

4. The vehicle recognition notification apparatus according to claim 1 , further comprising:

a positional relationship change detection section that specifies a positional relationship between the subject vehicle and the other vehicle, based on a relative position of the other vehicle with respect to the subject vehicle, the relative position being defined from the position of the subject vehicle and the position of the other vehicle, and detects a behavior of the other vehicle attempting to change the positional relationship between the subject vehicle and the other vehicle,

wherein:

the recognition information transmission processing section transmits the recognition information signal to the other vehicle, based on that the positional relationship change detection section detects the behavior of the other vehicle attempting to change the positional relationship between the subject vehicle and the other vehicle.

5. The vehicle recognition notification apparatus according to claim 4 , wherein:

the positional relationship change detection section includes an overtaken determination section that determines whether the other vehicle attempts to overtake the subject vehicle; and

the recognition information transmission processing section transmits the recognition information signal to the other vehicle based on that the overtaken determination section determines that the other vehicle attempts to overtake the subject vehicle.

6. The vehicle recognition notification apparatus according to claim 1 , further comprising:

a positional relationship change detection section that specifies a positional relationship between the subject vehicle and the other vehicle based on a relative position of the other vehicle with respect to the subject vehicle, the relative position being defined from the position of the subject vehicle and the position of the other vehicle, and detects a behavior of the subject vehicle attempting to change the positional relationship between the subject vehicle and the other vehicle,

wherein:

the another-driver recognition state determination section starts processing of determining whether the driver of the other vehicle recognizes the subject vehicle, based on that the positional relationship change detection section detects the behavior of the subject vehicle attempting to change the positional relationship between the subject vehicle and the other vehicle.

7. The vehicle recognition notification apparatus according to claim 6 , wherein:

the positional relationship change detection section includes an overtaking determination section that determines whether the subject vehicle attempts to overtake the other vehicle; and

the another-driver recognition state determination section starts processing of determining a recognition state indicating whether the driver of the other vehicle recognizes the subject vehicle when the overtaking determination section determines that the subject vehicle attempts to overtake the other vehicle.

8. A vehicle recognition notification system comprising:

a first vehicle recognition notification apparatus mounted on a first vehicle; and

a second vehicle recognition notification apparatus mounted on a second vehicle,

wherein:

the first vehicle recognition notification apparatus includes

a subject-driver recognition state determination section that determines whether a driver of the first vehicle recognizes the second vehicle,

a recognition information transmission processing section that transmits to the second vehicle recognition information a signal indicating that the driver of the first vehicle recognizes the second vehicle when the subject-driver recognition state determination section determines that the driver of the first vehicle recognizes the second vehicle,

a first-vehicle position acquisition section that acquires a position of the first vehicle,

a first-vehicle vehicle information reception processing section that receives vehicle information transmitted by the second vehicle and including information to specify a position of the second vehicle,

a first-vehicle another-vehicle position acquisition section that acquires the position of the second vehicle based on the vehicle information received by the first-vehicle vehicle information reception processing section, and

a visual line detection section that detects a visual line direction of the driver of the first vehicle;

the subject-driver recognition state determination section determines whether the driver of the first vehicle recognizes the second vehicle, based on the visual line direction detected by the visual line detection section, the position of the first vehicle acquired by the first-vehicle subject-vehicle position acquisition section, and the position of the second vehicle acquired by the first-vehicle-side another-vehicle position acquisition section;

the second vehicle recognition notification apparatus includes

a recognition information reception processing section that receives the recognition information signal transmitted from the first vehicle,

an another-driver recognition state determination section that determines whether the driver of the first vehicle recognizes the second vehicle based on the recognition information signal received by the recognition information reception processing section,

an informing control section that informs a driver of the second vehicle of a result of a determination made by the another-driver recognition state determination section based on the recognition information signal,

a second-vehicle subject-vehicle position acquisition section that acquires a position of the second vehicle,

a second-vehicle vehicle information reception processing section that receives vehicle information transmitted by the first vehicle and including information to specify a position of the first vehicle, and

a second-vehicle another-vehicle position acquisition section that acquires the position of the first vehicle based on the vehicle information received by the second-vehicle vehicle information reception processing section;

the another-driver recognition state determination section determines whether the second vehicle is present in a predetermined viewable range of the first vehicle, based on the position of the second vehicle acquired by the second-vehicle subject-vehicle position acquisition section and the position of the first vehicle acquired by the second-vehicle another-vehicle position acquisition section;

the another-driver recognition state determination section determines that a recognition state indicating whether the driver of the first vehicle recognizes the second vehicle is unclear when not receiving the recognition information signal from the first vehicle within a particular period of time after the determination that the second vehicle is present in the viewable range of the first vehicle;

the another-driver recognition state determination section determines that the driver of the first vehicle recognizes the second vehicle when receiving from the first vehicle the recognition information signal indicating that the driver of the first vehicle recognizes the second vehicle within a particular period of time after the determination that the second vehicle is present in the viewable range of the first vehicle; and

the another-driver recognition state determination section determines that the driver of the first vehicle does not recognize the second vehicle when receiving from the first vehicle the recognition information signal indicating that the driver of the first vehicle does not recognize the second vehicle within a particular period of time after the determination that the second vehicle is present in the viewable range of the first vehicle.