| 摘要 |
PROBLEM TO BE SOLVED: To shorten braking distance even when there is a tendency of the braking distance being elongated based on a vehicle condition or driving condition, and restrict consumption of power even while shortening the braking distance. SOLUTION: As rear wheels 6 slip when a main brake is actuated, a brake control valve 20 is energized by a controller 41 to actuate an auxiliary brake 26 for providing auxiliary braking force to front wheels 5. At this time, in the case of a low speed range where car speed when braking is started is so lower than a set car speed that no effects are given to shortening of braking distance even if the auxiliary braking force is provided, the auxiliary brake 26 is not actuated regardless if slipping exists or not at the rear wheels 6.
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