DRIVE CONTROL DEVICE FOR WORK VEHICLE

To provide a drive control system for a working vehicle, which can prevent engine stall with certainty even when a large load suddenly acts on a vehicle-mounted engine and which is also excellent in environment friendly performance. When a vehicle speed of a wheel loader (1) is determined to be not higher than a reference value (Yes) in step S4 and a forward/reverse command means (40) is determined to have been switchingly operated (Yes) in step S5, the routine advances to step S6 where an increment N of engine speed according to an engine load factor is determined. In step S7, the increment N of engine speed is then added to a target engine speed Na corresponding to a depression stroke of an accelerator pedal (38), the thus-determined Na=Na+N is set as a new target engine speed Na, and a target engine speed command i1 is sent to an engine controller (37).