Cargo compartment door open driving warning method and device

A cargo compartment door open driving warning method for providing an open driving warning for a door of a cargo compartment mounted for cargo loading in a vehicle, the vehicle being a purpose built vehicle (PBV), the cargo compartment door open driving warning method comprising:

• determining, by a processor, whether the vehicle is a cargo vehicle;
• in response that the processor concludes the vehicle is the cargo vehicle, activating, by the processor, a door open driving warning mode;
• setting, by the processor, the door open driving warning mode to one of a plurality of predetermined operation modes, wherein the plurality of predetermined operation modes includes a first operation mode and a second operation mode;
• detecting, by the processor, that the door of the cargo compartment is open;
• in response that the door open driving warning mode is the first operation mode and the door of the cargo compartment is open, outputting a warning alarm regardless of a speed of the vehicle;
• determining, by the processor, whether the speed of the vehicle exceeds a predetermined reference speed in response that the door open driving warning mode is the second operation mode and the door of the cargo compartment is open;
• and
• outputting, by the processor, the warning alarm in response that the speed of the vehicle exceeds the predetermined reference speed.