DISPLAY CONTROL DEVICE, DISPLAY CONTROL SYSTEM, DISPLAY CONTROL METHOD, AND DISPLAY CONTROL PROGRAM

A display control device includes a video data acquisition unit that acquires video data from a camera that captures a video image in a moving direction of a vehicle, a vehicle motion detection unit that detects motion information containing a steering angle of the vehicle, an expected path line generation unit that generates a main expected path line extending along a planned moving path in accordance with the steering angle from a center part of a width of the vehicle, a superimposed video generation unit that generates superimposed data, the superimposed data being video data where the main expected path line is superimposed on the video data, and a display control unit that transmits the superimposed data to a display unit so as to display a video related to the superimposed data on the display unit.