Provided is a remote operation device 112 serving as an operation terminal that can set the dimensions of a chassis and a work machine of an autonomous traveling work vehicle 1 which is capable of automatically travelling and working along a set travel route R, in order to make it possible to easily set, by touch operation on a screen of a display device, the dimensions and a position, which are necessary information for setting the travel route to be autonomously travelled. The remote operation device 112 can communicate, via communication devices 110, 111, with a control device 30 of the autonomous traveling work vehicle 1. The remote operation device 112 is provided with a control device 119 and a display device 113. The display device 113 is configured so as to be operated by touch and so that: on a chassis and work vehicle configuration screen, a schematic diagram of a work vehicle and work machine is displayed and on such configuration screen, in response to a touching and moving operation of a fingertip on the display screen, a number representing the length necessary for setting of the work machine is changed, and at the same time the size of a displayed schematic image is changed.
