PROBLEM TO BE SOLVED: To accurately detect a position of a trunnion arm. A work vehicle according to an embodiment includes a traveling vehicle body, a work machine, an operation member, a hydrostatic continuously variable transmission mechanism, a control unit, and a trunnion detection member. The traveling vehicle body has traveling wheels capable of transmitting power from a drive source. The work machine is provided on the traveling vehicle body, and power can be transmitted from the drive source. The operating member is operated when adjusting the vehicle speed including stopping with respect to the traveling vehicle body. The continuously variable transmission mechanism shifts continuously in response to a change in the position of the trunnion arm by operating an operating member. The control unit controls each unit including the continuously variable transmission mechanism. The trunnion detection member directly detects the position of the trunnion arm. [Selection diagram] Fig. 5【課題】トラニオンアームの位置を正確に検出すること。【解決手段】実施形態に係る作業車両は、走行車体と、作業機と、操作部材と、静油圧式の無段変速機構と、制御部と、トラニオン検出部材とを備える。走行車体は、駆動源から動力が伝達可能な走行車輪を有する。作業機は、走行車体に設けられ、駆動源から動力が伝達可能である。操作部材は、走行車体に対する停止を含む車速調節を行う場合に操作される。無段変速機構は、操作部材の操作によるトラニオンアームの位置の変更に応じて無段変速する。制御部は、前記無段変速機構を含む各部を制御する。トラニオン検出部材は、トラニオンアームの位置を直接検出する。【選択図】図５
