An automatic mirror rotation assembly for a vehicle including a tractor and semi-detached trailer is provided. An elongated arm supporting a rotatable wheel attaches to a support mounted at a selected position on the tractor chassis. The arm is pivoted upward until the wheel contacts the underside of...http://www.google.de/patents/US5953168?utm_source=gb-gplus-sharePatent US5953168 - Automatically adjustable passenger mirror assembly for a trailered vehicle having a mirror position feedback device
