Calling system and method for off-road vehicle

1. A calling system for off-road vehicles, comprising processing circuitry, the processing circuitry being configured to:

obtain location information indicating a location of a first off-road vehicle;

obtain a specific state signal indicating that the first off-road vehicle is in a given specific state; and

enter a transmission-ready state in which a first wireless communicator of the first off-road vehicle is ready to, based on the specific state signal, wirelessly transmit a calling signal containing the location information, wherein the wireless transmission of the calling signal by the first wireless communicator is performed using a wireless communication technology in which the calling signal transmitted from the first wireless communicator is received directly by a second wireless communicator of a second off-road vehicle,

the processing circuitry being further configured to cancel the transmission of the calling signal upon receiving a cancellation input.

2. The calling system according to claim 1 , wherein the calling signal contains type information indicating a type of the specific state.

3. The calling system according to claim 2 , wherein the type information includes information indicating operation failure of the first off-road vehicle, information indicating that the first off-road vehicle has remained overturned for over a given period of time, or information indicating that a level of an energy source for a prime mover of the first off-road vehicle is below a given value.

4. The calling system according to claim 1 , wherein the calling signal contains identification information of the first off-road vehicle.

5. The calling system according to claim 1 , wherein the processing circuitry is further configured to cause a user interface of the first off-road vehicle to output information indicating completion of the wireless transmission of the calling signal.

6. The calling system according to claim 1 , wherein

the processing circuitry is further configured to:

cause a user output interface to output transmission-ready information indicating establishment of the transmission-ready state upon determining that the specific state signal has been obtained; and

after obtaining the specific state signal and before transmitting the calling signal, wait for the cancellation input for cancellation of the transmission of the calling signal; wherein:

cancelling the transmission of the calling signal includes cancelling the transmission of the calling signal upon receiving the cancellation input within a given period of time while waiting for the cancellation input; and

the wireless transmission of the calling signal by the first wireless communicator is performed in case that the given period of time elapses without reception of the cancellation input while the processing circuitry is waiting for the cancellation input.

7. The calling system according to claim 1 , wherein

the calling signal is a first calling signal,

the processing circuitry is further configured to:

wirelessly receive a second calling signal from the second off-road vehicle; and

cause a user interface to output calling information based on the second calling signal, the calling information being perceivable by a user driving the first off-road vehicle, and

the calling information includes information that helps to head for the second off-road vehicle.

8. The calling system according to claim 1 , wherein

the specific state signal contains content information indicating a content of the specific state, and

the choosing the destination includes changing the destination according to the content information.

9. The calling system according to claim 1 , wherein the processing circuitry is further configured to:

receive a user input that commands the processing circuitry to transmit the calling signal; and

wirelessly transmit the calling signal in response to the user input.

10. The calling system according to claim 1 , wherein the processing circuitry is further configured to:

receive a callback signal as a response to the calling signal; and

upon receiving the callback signal, cause a user interface to output callback information perceivable by a user driving the first off-road vehicle.

11. The calling system according to claim 10 , wherein the processing circuitry is further configured to, after wirelessly transmitting the calling signal, repeat the wireless transmission of the calling signal periodically until receiving the callback signal.

12. The calling system according to claim 1 , wherein the processing circuitry is further configured to, upon wirelessly transmitting a calling signal, inform a driver of the wireless calling signal transmission using a user output interface.

13. The calling system according to claim 1 , wherein the specific state is:

a state where a level of an energy source for a prime mover of the first off-road vehicle is below a given value,

an abnormal state of the first off-road vehicle, or

a state where control for limiting an output of the prime mover has been carried out to address the abnormal state of the first off-road vehicle.

14. The calling system according to claim 1 , wherein:

the specific state includes an abnormal state of the first off-road vehicle, and

the calling signal includes information indicating a type of the abnormal state.

15. The calling system according to claim 1 , wherein the processing circuitry is further configured to choose a destination of the calling signal according to a predetermined condition, the predetermined condition including an environmental condition or a time zone condition.

16. A calling system for off-road vehicles, comprising processing circuitry, the processing circuitry being configured to:

receive a user input that commands the processing circuitry to register other off-road vehicles as group members;

obtain location information indicating a location of a first off-road vehicle;

obtain a specific state signal indicating that the first off-road vehicle is in a given specific state; and

cause a first wireless communicator of the first off-road vehicle to, based on the specific state signal, wirelessly transmit, only to the group members, a calling signal containing the location information, wherein the wireless transmission of the calling signal by the first wireless communicator is performed using a wireless communication technology in which the calling signal transmitted from the first wireless communicator is received directly by a second wireless communicator of a second off-road vehicle.

17. The calling system according to claim 16 , wherein the number of destinations of the calling signal based on the specific state falling into a first category is greater than the number of one or more destinations of the calling signal based on the specific state falling into a second category.

18. A calling system mounted on a first off-road vehicle, comprising:

a display that displays a screen; and

processing circuitry configured to:

wirelessly receive a calling signal from a second off-road vehicle being in a trouble state or an abnormal state, the calling signal containing location information indicating a location of the second off-road vehicle;

cause the screen to display a mark indicating the location of the second off-road vehicle based on the calling signal; and

cause the screen to display an arrow indicating a direction of the location of the second off-road vehicle.

19. The calling system according to claim 18 , wherein:

the screen is a map screen; and

the processing circuitry configured to cause the map screen to display the arrow indicating the direction of the location of the second off-road vehicle with respect to a location of the first off-road vehicle when the second off-road vehicle is outside a display range of the map screen.