Referring to FIG. 4A, the working mode selection of the EV 10 is made in a manual manner by a user selection input through the input device 140 of the emergency subscriber device 100. In step S410, the emergency subscriber device 100 (e.g., processor 110) receives the information on the emergency situation from the remote management server 20 or other control systems which receive various information regarding emergency situations such as accidents, crimes, disasters, or the like. Next, the emergency subscriber device 100 may display an operator of the EV (e.g., driver) the information of the emergency situation using the output device 150 (e.g., display screen) (S420) and allow the EV operator to select (or input) one of emergency modes through the input device 140. Thus, the emergency subscriber device 100 receives a user selection input for the working mode of the EV 10 (S430).
