Work vehicle

A work vehicle comprising:

• a vehicle body that is provided with a plurality of wheels;
• an engine that is mounted on the vehicle body;
• a variable displacement traveling hydraulic pump that is driven by the engine;
• a variable displacement traveling hydraulic motor that is connected to the traveling hydraulic pump through a closed-circuit and transmits a driving force of the engine to the plurality of wheels;
• and
• a controller configured to control the traveling hydraulic motor,
• wherein
• the work vehicle comprises:
• a pressure sensor configured to detect a load pressure of the traveling hydraulic motor;
• and
• a vehicle speed sensor configured to detect a vehicle speed, and
• the controller is configured to, in a case where a detection pressure value detected by the pressure sensor is equal to or less than a switching pressure value corresponding to a switching point in the traveling hydraulic motor between a maximum displacement volume and a minimum displacement volume, and the detection vehicle speed value detected by the vehicle speed sensor is less than a predetermined upper limit vehicle speed during flat ground traveling of the vehicle body, limit the minimum displacement volume of the traveling hydraulic motor to a first minimum displacement volume value that is less than a value of the minimum displacement volume of the traveling hydraulic motor which is associated with the upper limit vehicle speed.