Abstract: A bulldozer includes: a travel manipulation lever that receives a manipulation of an operator and outputs a travel command to allow a travel device to travel or to stop the travel device; a fuel adjustment dial that sets a rotation speed of an engine; a seating sensor that outputs a seating signal indicating a sensed result of whether or not the operator is seated in an operator seat; a monitor that performs notification to the operator; and a controller. When the travel command to allow the travel device to travel is issued from the travel manipulation lever, a set value of the rotation speed of the engine is lower than or equal to a predetermined value, and the operator is not seated in the operator seat, the controller causes the monitor to perform the notification.

Abstract: A work vehicle control system includes an actual topography acquisition device, a storage device, and a controller. The actual topography acquisition device acquires actual topography information, which indicates an actual topography of a work target. The storage device stores design topography information, which indicates a final design topography that is a target topography of the work target. The controller acquires the actual topography information from the actual topography acquisition device, and the design topography information from the storage device. The controller determines an intermediate design topography positioned above the actual topography and below the final design topography. The controller generates a command signal to move the work implement based on the intermediate design topography. The intermediate design topography includes a plurality of intermediate design surfaces divided in the traveling direction of the work vehicle.

Abstract: A work vehicle includes a work implement. A control system for the work vehicle includes an input device and a controller. The controller is configured to communicate with the input device, receive an input signal indicating an input operation by an operator from the input device, acquire vehicle information including a position of the work vehicle when the input signal is received, and orientation information of the work vehicle when the input signal is received, and determine a target design surface indicating a target trajectory of the work implement based on the vehicle information and the orientation information when the input signal is received.

Abstract: A work vehicle control system includes an actual topography acquisition device, a storage device, and a controller. The actual topography acquisition device acquires actual topography information which indicates an actual topography of a work target. The storage device stores design topography information which indicates a final design topography which is a target topography of the work target. The controller acquires the actual topography information from the actual topography acquisition device. The controller acquires the design topography information from the storage device. The controller generates a command signal to move the work implement along a first locus that follows a slope of the actual topography, and a second locus positioned above the actual topography and below the final design topography in front of the first locus.

Abstract: A work vehicle control system includes an actual topography acquisition device, a storage device, a soil amount acquisition device, and a controller. The actual topography acquisition device acquires actual topography information, which indicates an actual topography of a work target. The storage device stores design topography information, which indicates a final design topography of the work target. The soil amount acquisition device generates a soil amount signal indicating a held soil amount of the work implement. The controller acquires the actual topography information from the actual topography acquisition device, the design topography information from the storage device, and the soil amount signal from the soil amount acquisition device. The controller determines an intermediate design topography positioned above the actual topography and below the final design topography in accordance with the held soil amount.

Abstract: A work vehicle control system includes an actual topography acquisition device, a storage device, and a controller. The actual topography acquisition device acquires actual topography information, which indicates an actual topography of a work target. The storage device stores design topography information, which indicates a final design topography that is a target topography of the work target. The controller acquires the actual topography information from the actual topography acquisition device, and the design topography information from the storage device. The controller determines an intermediate design topography positioned above the actual topography and below the final design topography. The controller generates a command signal to move the work implement based on the intermediate design topography. The intermediate design topography includes a plurality of intermediate design surfaces divided in the traveling direction of the work vehicle.

Abstract: A work vehicle control system includes an actual topography acquisition device, a storage device, a soil amount acquisition device, and a controller. The actual topography acquisition device acquires actual topography information, which indicates an actual topography of a work target. The storage device stores design topography information, which indicates a final design topography of the work target. The soil amount acquisition device generates a soil amount signal indicating a held soil amount of the work implement. The controller acquires the actual topography information from the actual topography acquisition device, the design topography information from the storage device, and the soil amount signal from the soil amount acquisition device. The controller determines an intermediate design topography positioned above the actual topography and below the final design topography in accordance with the held soil amount.

Abstract: A work vehicle control system includes an actual topography acquisition device, a storage device, and a controller. The actual topography acquisition device acquires actual topography information which indicates an actual topography of a work target. The storage device stores design topography information which indicates a final design topography which is a target topography of the work target. The controller acquires the actual topography information from the actual topography acquisition device. The controller acquires the design topography information from the storage device. The controller generates a command signal to move the work implement along a first locus that follows a slope of the actual topography, and a second locus positioned above the actual topography and below the final design topography in front of the first locus.

Abstract: A work vehicle includes a work implement. A control system for the work vehicle includes an input device and a controller. The controller is configured to communicate with the input device, receive an input signal indicating an input operation by an operator from the input device, acquire vehicle information including a position of the work vehicle when the input signal is received, and orientation information of the work vehicle when the input signal is received, and determine a target design surface indicating a target trajectory of the work implement based on the vehicle information and the orientation information when the input signal is received.

Abstract: A work vehicle includes a drive unit, a fan motor, a fan configured to be driven by the fan motor, an overrun state detecting unit configured to detect an overrun state of the drive unit, and a control unit. The control unit is configured to control a rotational speed of the fan to reach a first fan rotational speed by increasing the rotational speed of the fan when a detection value detected by the overrun state detecting unit becomes greater than or equal to a first threshold. The control unit is configured to control the rotational speed of the fan to reach a second fan rotational speed higher than the first fan rotational speed when the detection value becomes greater than or equal to a second threshold greater than the first threshold.

Abstract: A work vehicle includes a drive unit, a fan motor, a fan configured to be driven by the fan motor, an overrun state detecting unit configured to detect an overrun state of the drive unit, and a control unit. The control unit is configured to control a rotational speed of the fan to reach a first fan rotational speed by increasing the rotational speed of the fan when a detection value detected by the overrun state detecting unit becomes greater than or equal to a first threshold. The control unit is configured to control the rotational speed of the fan to reach a second fan rotational speed higher than the first fan rotational speed when the detection value becomes greater than or equal to a second threshold greater than the first threshold.