To provide a travel controller for working vehicles which can effectively use the power of a battery, while making an effort to simplify its control and to reduce the cost, in a working vehicle the wheels of which are driven by an induction motor that is driven by receiving the power supply from the battery by the control of an inverter.

In a vehicle 1 for high lift work which is equipped with this controller for working vehicles, an inverter control unit 51 controls the frequency which is set based on a travel command, according to the detected coil temperature of travel motors 12a and 12b, and sets this controlled frequency as the command frequency, when the coil temperatures of the travel motors 12a and 12b detected by a motor temperature detector 64 are over preset tolerable temperatures, when the tilt angle detected by a tilt angle detector 67 is not less than a specified temperature and the storage state of a scissors link mechanism 20 is detected by a storage detector.

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