It is very important to ensure good communication quality between the vehicle communication device 10 and the field communication device 20. When the communication quality is great, the real-time traffic data of the vehicle 100 can be factually provided to the back-end information station 30. The back-end information station 30 would be able to effectively monitor situations relating to the vehicle 100. The vehicle 100 also would be able to factually receive data and control commands from the back-end information station 30, for accordingly automating the vehicle 100.

In an embodiment of the present invention, the vehicle communication device 10 includes a vehicle controller 11 and multiple vehicle communication interfaces 12, wherein the vehicle communication interfaces 12 are electrically connected to the vehicle controller 11. The vehicle communication interfaces 12 differ individually in types (of different communication protocols). The vehicle controller 11 is a controller chip, and the vehicle communication interfaces 12 are wireless communication interfaces. Such wireless communication interfaces include mobile communication interfaces and short distance wireless communication interfaces. With reference to FIG. 3, for instance, the vehicle communication interfaces 12 includes a fifth generation (5G) mobile network communication interface, a fourth generation (4G) mobile network communication interface, a cellular vehicle-to-everything (C-V2X) network communication interface, a Wi-Fi network communication interface, and a Bluetooth Low Energy (BLE) network communication interface.