Wheeled work vehicle

A wheeled work vehicle comprising:

• a prime mover;
• a hydraulic pump driven by the prime mover;
• a traveling hydraulic motor driven by hydraulic fluid supplied from the hydraulic pump;
• a wheel driven by rotational power of the traveling hydraulic motor;
• a transmission that is interposed between the traveling hydraulic motor and the wheel and transmits the rotational power of the traveling hydraulic motor to the wheel with a change in speed, the transmission having at least two speed stages, the two speed stages being a first speed stage and a second speed stage as a higher speed stage than the first speed stage;
• a traveling control valve that controls a direction and a flow rate of the hydraulic fluid to be supplied from the hydraulic pump to the traveling hydraulic motor, the traveling control valve having a first interruption position that interrupts supply of the hydraulic fluid from the hydraulic pump to the traveling hydraulic motor;
• a changeover valve that shifts a speed stage of the transmission through supply and discharge of hydraulic fluid to and from the transmission by a position of the changeover valve being selectively switched;
• and
• a controller that controls the traveling control valve and the changeover valve, wherein
• the controller is configured to
• switch the traveling control valve to the first interruption position,
• then switch the position of the changeover valve such that the speed stage of the transmission is shifted from the second speed stage to the first speed stage, and
• switch the traveling control valve from the first interruption position to an original position side before the switching
• in a case where the controller shifts the speed stage of the transmission from the second speed stage to the first speed stage.