A control unit in a work vehicle executes an automatic downshift for shifting the speed range of a transmission to a speed range at a lower speed than the current speed range. The control unit determines the execution of the automatic downshift on the basis of automatic downshift conditions. The automatic downshift conditions include the fact that operating amount of the accelerator operating member is equal to or greater than a predetermined accelerator threshold, the fact that the vehicle speed is less than a predetermined speed threshold, and the fact that the acceleration is equal to or less than a predetermined acceleration threshold.
