| 摘要 |
An automatic mirror rotation assembly for a vehicle including a tractor and semi-detached trailer is provided. A control wheel (58) is mounted in a structure connecting to a chassis of the tractor, and is raised into engagement with a lower surface of the trailer. As the vehicle turns, the rotation of the trailer with respect to the tractor is measured b y counting rotations or partial rotations of the wheel (58) against the underside surface of the trailer. A corresponding degree of passenger-si de rear view mirror is calculated, and a motor automatically rotates the mirror.
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