Work vehicle

1. A work vehicle comprising:

an engine;

an acceleration operation device configured to change an operational state of the engine so that the work vehicle travels by an operation of the acceleration operation device by an operator;

a transmission;

a shift operation device configured to change an operational mode of the transmission; and

a display disposed near a seat for the operator; and

wherein:

the display is configured to display a screen for selecting whether an accelerator interlocked traveling mode is allowed for each operational mode of the shift operation device;

while the accelerator interlocked traveling mode is allowed, a traveling speed of the work vehicle is changeable by operation of the acceleration operation device; and

while the accelerator interlocked traveling mode is not allowed, the traveling speed is unchangeable by operation of the acceleration operation device.

2. The work vehicle according to claim 1 , wherein switching for selecting not to allow the accelerator interlocked traveling mode is unable to be performed on the display while the work vehicle is traveling.

3. A system for operating a work vehicle, the system comprising:

a controller configured to selectively set an accelerator interlock state of a work vehicle between:

a first state in which a traveling speed of the work vehicle is changeable via an operation of an accelerator pedal; and

a second state in which the traveling speed of the work vehicle is unchangeable by the operation of the accelerator pedal; and

wherein the controller is further configured to:

based on receiving an input corresponding to a first selectable region of one or more selectable regions of a display unit, change the accelerator interlock state for a first operational mode of one or more operational modes.

4. The system of claim 3 , further comprising:

the display unit coupled to the controller and configured to display the one or more selectable regions, each selectable region corresponding to a respective operational mode of the one or more operational modes and configured to indicate the accelerator interlock state of the respective operational mode.

5. The system of claim 4 , wherein the controller is further configured to:

based on the traveling speed of the work vehicle being greater than zero and the input received via the one or more selectable regions:

prevent the accelerator interlock state from changing to the second state.

6. The system of claim 4 , wherein the one or more selectable regions include:

the first selectable region that corresponds to the first operational mode; and

a second selectable region that corresponds to a second operational mode of the one or more operational modes.

7. The system of claim 4 , further comprising:

the work vehicle including:

a transmission configured to operate in the one or more operational modes;

a shift lever configured to change an operational state of the transmission between the one or more operational modes; and

the acceleration pedal.

8. The system of claim 7 , wherein the transmission is a continuously variable transmission.

9. The system of claim 7 , wherein the shift lever is movable from:

a first position in which the transmission operates in a first operational state corresponding to the first operational mode of the one or more operational modes; and

a second position in which the transmission operates in a second operational state corresponding to a second operational mode of the one or more operational modes.

10. The system of claim 9 , wherein the one or more selectable regions include:

the first selectable region that corresponds to the first operational mode; and

a second selectable region that corresponds to the second operational mode.

11. The system of claim 4 , further comprising:

one or more user-input devices coupled to the display unit and configured to enable the input.

12. The system of claim 11 , wherein the one or more user-input devices comprise a plurality of buttons and an encoder dial.

13. An apparatus, comprising:

a controller configured to:

receive a first input indicating an operational position of an acceleration pedal;

receive a second input indicating a selection of a first selectable region of one or more selectable regions of a display unit, each selectable region corresponding to a respective operational mode of a continuously variable transmission;

selectively set an accelerator interlock state for each operational mode between:

a first state in which a traveling speed of a work vehicle is changeable via the first input; and

a second state in which the traveling speed of the work vehicle is unchangeable via the first input; and

in response to receiving the second input, change the accelerator interlock state for the respective operational mode corresponding to the first selectable region.

14. The apparatus of claim 13 , further comprising:

the continuously variable transmission;

a shift lever configured to change the operational mode of the continuously variable transmission;

the acceleration pedal configured to change the traveling speed of the work vehicle; and

the display unit configured to display the one or more selectable regions.

15. The apparatus of claim 14 , wherein the controller is coupled to the display unit.

16. The apparatus of claim 14 , wherein the controller is further configured to receive a first input indicating an operational position of the shift lever.

17. The apparatus of claim 14 , wherein the controller is further configured to, based on the traveling speed of the work vehicle being greater than zero and receiving the second input:

prevent the accelerator interlock state from changing to the second state.

18. The apparatus of claim 14 , wherein the one or more selectable regions include:

the first selectable region that corresponds to a first operational mode of the respective operational modes; and

a second selectable region that corresponds to a second operational mode of the respective operational modes.

19. The apparatus of claim 18 , wherein the shift lever is movable from:

a first position in which the continuously variable transmission operates in the first operational mode; and

a second position in which the continuously variable transmission operates in the second operational mode.