Referring to FIG. 2A, the emergency subscriber device 100 generates EV-related data 11 and/or a working mode selection signal 14 and transmit the EV-related data 11 and/or the working mode selection signal 14 to the remote management server 20. The EV-related data 11 includes a type of the EV, a location of the EV, a velocity of the EV, or the like. The working mode selection signal 14 includes a working mode of the EV 10 which is selected (or determined). More details of the working mode selection signal 14 will be described with reference to FIGS. 4A and 4B.

Referring further to FIG. 2B, the remote management server 20 receives the EV-related data 11 and/or the working mode selection signal 14 using a receiver 234 of the communication device 230 transmitted over the communication network 15 and store the EV-related data 11 and/or the working mode selection signal 14 into the memory 220. The communication device 230 includes a transmitter 232 and the receiver 234. The communication device 230 may be implemented to support at least one of the above-mentioned communication techniques such as RFID, CDMA, GSM, wideband CDMA, CDMA2000?, TDMA, LTE, wireless LAN, Bluetooth?, or the like. The input device 240 can be, but is not limited to: a keyboard, a touch screen, an audio input system, a voice recognition system, or the like. The output device 250 can be, but is not limited to: a screen, a speaker, a light, a siren, a visual system, an audio system, or the like.