FIG. 7 depicts an example mapping relationship among intents, emergency modes, and geofence functions according to an exemplary embodiment of the present disclosure. As exemplary depicted in FIG. 7, for example, a certain intent (e.g., 1420_1) is associated with one (e.g., 1410_1) of the emergency modes 1410_1 to 1410_M, so that upon selecting such intent (e.g., 1420_1), the working mode selection signal 14 indicating that the EV 10 is in the emergency mode (e.g., 1410_1) is transmitted to the remote management server 20, and the processor 210 of the remote management server 20 determines a geofence corresponding to the emergency mode (e.g., 1410_1), generates a safety warning signal based on the geofence, and transmits the safety warning signal to the other vehicles 30a to 30d nearby the EV 10. As a further example, another intent (e.g., 1420_N) is not associated with any of the emergency modes 1410_1 to 1410_M. In this case, upon selecting the intent (e.g., 1420_N), the working mode selection signal 14 indicating that the EV 10 is in an emergency mode (e.g., 1410_K) corresponding to the intent (e.g., 1420_N) is transmitted to the remote management server 20, and the processor 210 of the remote management server 20 determines a geofence (e.g., G_K(x) corresponding to the emergency mode (e.g., 1410_K), generates a safety warning signal based on the geofence, and transmits the safety warning signal to the other vehicles 30a to 30d nearby the EV 10. The emergency mode 1410_K might not be among the emergency modes 1410_1 to 1410_M, for example, no degree of emergency might be assigned to the emergency mode 1410_K unlike the emergency modes 1410_1 to 1410_M, and a corresponding geofence G_K(x) might have a different size or shape from each of the geofences G_{E_1}(x) to G_{E_M}(x).