| 摘要 |
PROBLEM TO BE SOLVED: To provide a rear-view mirror device for a combination of vehicles consisting of a tractor and a trailer allowing a driver to visually confirm how safe the inside trailer rear end is to the circumferential environment in turning. SOLUTION: When the execution of left or right turn of a vehicle is detected, the angle of a turning directional rear-view mirror 4 is adjusted so that trailer wheel Tw is reflected substantially in the center of the rear-view mirror 4 when the road width in traveling is a prescribed value or more, and adjusted so that the trailer rear end 2c is reflected substantially in the center of the rear-view mirror 4 when the road width is less than the prescribed width.
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