| 摘要 |
PROBLEM TO BE SOLVED: To raise a security level while suppressing rise of a cost.SOLUTION: A tractor includes: a key switch 13 that permits use of the tractor to a user who has a prescribed key 12; a control part 11 to perform a prescribed control; and a setting operation device 21 to perform setting operation related to the prescribed control. A second security function comprises by providing in the control part 11: a security release information input means to make the user input a prescribed security code by using a setting operation device 21 at the start of use of the tractor; and a use restriction means that limits the use of the tractor by changing temporarily the control content of at least either one of engine control, travel control, working machine control, and report control when the input security code does not agree to the registration information that is registered beforehand. In addition, a use restriction selecting means to select the use restriction that the use restriction means does from the plurality kinds of use restrictions is installed. |
