VEHICLE DISPLAY APPARATUS

A head-up display apparatus prevents a driver from being confused when, for example, the number of overlaid images for alerting or emphasizing that are overlaid on an object increases due to the cutting-in of another vehicle, resulting in overlap between the overlaid images or between an overlaid image and another object resulting in an unclear correspondence relationship between the overlaid images and objects. A display control unit has: an overlap determination unit that, if a first overlay image is overlaid on a first object and a second object as a cut-in object is detected, determines the presence or absence of overlap between the overlaid images or the like; and a visibility control unit that, if the overlap occurs, makes the visibility of the first overlay image overlaid on the first object lower than the visibility of the second overlay image overlaid on the second object.