SPEED DATA DISPLAY SYSTEM FOR A WORK VEHICLE

A speed change display control device includes a screen generator 81 generating a first screen 101 and a second screen 200. The first screen 101 includes: a first auxiliary area 202 displaying auxiliary speed change stages; a first main area 201 displaying main speed change stages assigned to the auxiliary speed change stages; and a current stage area 103 displaying engaged speed change stages. The second screen 200 includes: the second auxiliary area 202; the second main area 201; a lower limit selection area 204 where the speed change stage defining a lower limit of a vehicle speed change ratio is selected; an upper limit selection area 205 where the speed change stage defining an upper limit of the vehicle speed change ratio is selected; and a limit stage area 203 displaying the currently selected upper limit and lower limit speed change stages.