An electric drive vehicle is provided with first and second slider plates contacting a trolley line on the high-voltage side and on the ground side, respectively. A camera has a photographing range of the whole of the second slider plate held in contact with the trolley line on the ground side and a part of the trolley line residing around the second slider plate. A controller controls a display of a monitor, wherein the controller includes a relative distance calculation section that calculates a relative distance between the trolley line on the ground side and a reference position of the second slider plate, and a bird's eye view image data generation section that generates bird's eye view image data reflecting the relative distance calculated by the relative distance calculation section and that outputs the bird's eye view image data to the monitor.