The present invention relates to a speed change mechanism (30) which is arranged in series with a variator (20) and which has at least a speed change stage of a forward second speed or more and a speed change mechanism And a transmission controller (12) for increasing the belt capacity beyond the belt capacity set when the accelerator opening (APO) is zero, until the braking force is generated. The transmission controller 12 reduces the increase in the amount of the belt to be set when the speed ratio of the auxiliary transmission mechanism 30 is at the high speed change ratio side and when the accelerator opening APO is zero.
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