PROBLEM TO BE SOLVED: To simplify wiring, and supplement warnings for over vehicle speed and the like by providing an output means executing device control by a running controller connected with an input means, and providing a function judging means and an warning output judging means for the running controller. SOLUTION: An input means of a running controller 1 is equipped with a forward speed and reverse lever 4, a key switch 5 and a vehicle speed sensor 6, and an output means is equipped with a revolving light 7, a buzzer and a chime 8. The running controller 1 is equipped with a warning output judging means 10, a function judging means 11 and a RAM 12. The function judging means 11 judges the function of the output means with respect to an input means. A warning output means 10 judges whether or not a warning is outputted in response to the input means, each specified output means is driven by charging the forward speed and reverse lever 4 and the key switch 5, and the specified output means is driven when the vehicle speed is founded to have been in excess of a set vehicle speed data fed from the RAM 12 by comparing a value from an input of a vehicle speed sensor 6 therewith. Thereby, the output control can be performed without needing any installation of dedicated channel, or can achieve a warning function with respect to the excess car speed.