IN-VEHICLE TRANSMISSION DEVICE AND MOBILE TERMINAL, AND LOADAGE INFORMATION DISPLAY SYSTEM INCLUDING SAME

A mobile terminal includes a mobile communication unit for communicating with an in-vehicle signal-sending device, an input operation unit for inputting data, a computational processing unit for performing computational processing, a display unit for displaying a screen, a storage unit for storing screen display information, and a mobile control unit for controlling the display unit. The computational processing unit has a function for calculating a loadage deviation based on vehicle specifications and vehicle loadage information contained in a sensor signal from the mobile communication unit, the storage unit has a function for presetting the vehicle specifications, the loadage deviation, and the screen display information prepared to display the vehicle specifications and the loadage deviation on the display unit screen, and the mobile control unit has a function for causing the display unit to display at least the vehicle specifications and the loadage information based on the screen display information.