VEHICLE DISPLAY DEVICE

A vehicle display device (1) includes: an acquisition unit (2, 3) that acquires a travel environment; a prediction unit (6) that predicts a behavior of another vehicle (300) traveling ahead of a vehicle (100) of a driver (200), based on the travel environment; and a display unit (9) that, when the behavior of the other vehicle (300) is predicted to become unstable, displays the predicted behavior of the other vehicle (300) to the driver (200) of the vehicle (100). The vehicle display device (1) may include: a prediction unit (6) that predicts a behavior of a vehicle (100), based on the travel environment; and a display unit (9) that, when the behavior of the vehicle (100) is predicted to become unstable, displays the predicted behavior of the vehicle (100) to a driver (200) of the vehicle (100).