A construction vehicle equipped with an electrical storage device, a motor generator connected mechanically to an engine, a variable displacement hydraulic pump connected mechanically to the motor generator, a hydraulic actuator (12 - 14) driven by fluid supplied from the variable displacement hydraulic pump, a motor (7, 7b, 8, 8b) which is connected to the electrical storage device and to the motor generator by electrical power lines and which drives wheels (18a-d), a braking device (30a-d) for braking revolutions of the wheels (18a-d), and a control apparatus, the control apparatus comprising: a motor generator control unit which is adapted to drive the motor generator using the surplus electrical power which is generated, when regenerative electrical power generated by the motor (7, 7b, 8, 8b) during regenerative braking surpasses acceptable charging electrical power of the electrical storage device; a motor control unit which is adapted to reduce regenerative torque generated by the motor (7, 7b, 8, 8b), if the rotating speed of the engine, the motor generator, or the variable displacement hydraulic pump becomes larger than a set value while the motor generator is being driven by the surplus electrical power, and a brake control unit which is adapted to increase braking torque generated by the braking device (30a-d) if the rotating speed of the engine, the motor generator, or the variable displacement hydraulic pump becomes larger than the set value while the motor generator is being driven by the surplus electrical power, wherein the control apparatus further comprises: a motion determination unit (140, 144) adapted to determine whether or not the hydraulic actuator is in motion, and a tilting angle control unit which is adapted to increase the tilting angle of the variable displacement hydraulic pump, when the motion determination unit (140, 144) determines that the hydraulic actuator is not in motion and when the motor generator control unit drives the motor generator using the surplus electrical power, if the rotating speed of the engine, the motor generator, or the variable displacement hydraulic pump becomes larger than another set value. a motor generator control unit which is adapted to drive the motor generator using the surplus electrical power which is generated, when regenerative electrical power generated by the motor (7, 7b, 8, 8b) during regenerative braking surpasses acceptable charging electrical power of the electrical storage device; a motor control unit which is adapted to reduce regenerative torque generated by the motor (7, 7b, 8, 8b), if the rotating speed of the engine, the motor generator, or the variable displacement hydraulic pump becomes larger than a set value while the motor generator is being driven by the surplus electrical power, and a brake control unit which is adapted to increase braking torque generated by the braking device (30a-d) if the rotating speed of the engine, the motor generator, or the variable displacement hydraulic pump becomes larger than the set value while the motor generator is being driven by the surplus electrical power, wherein the control apparatus further comprises: a motion determination unit (140, 144) adapted to determine whether or not the hydraulic actuator is in motion, and a tilting angle control unit which is adapted to increase the tilting angle of the variable displacement hydraulic pump, when the motion determination unit (140, 144) determines that the hydraulic actuator is not in motion and when the motor generator control unit drives the motor generator using the surplus electrical power, if the rotating speed of the engine, the motor generator, or the variable displacement hydraulic pump becomes larger than another set value. a motion determination unit (140, 144) adapted to determine whether or not the hydraulic actuator is in motion, and a tilting angle control unit which is adapted to increase the tilting angle of the variable displacement hydraulic pump, when the motion determination unit (140, 144) determines that the hydraulic actuator is not in motion and when the motor generator control unit drives the motor generator using the surplus electrical power, if the rotating speed of the engine, the motor generator, or the variable displacement hydraulic pump becomes larger than another set value.