A vehicle has a plurality of traveling modes. A display device for the vehicle comprises: a display unit (48) displaying map information; and a control unit (14) causing the display unit (48) to display recognizably, at a portion of roads in the map information, traveling modes that correspond to the roads. Preferably, the control unit (14) sets a destination in response to an instruction received from an operator, searches for a traveling route extending from a starting point to the destination, divides the traveling route into segments, and associates one of the traveling modes with each of the segments. More preferably, the control unit (14) causes the display unit (48) to display the plurality of candidate traveling routes, each with the traveling mode overlaid thereon, and selects in response to an instruction of the operator one traveling route planned to be taken among the plurality of candidate traveling routes.