Abstract: An adjustable rear-view mirror apparatus for a road vehicle has a drive for rotating the mirror to an angle determined by a control signal thereto. The drive includes an output gear driven by a drive gear rotated by a motor. A leaf spring carries the drive gear and biasses it into engagement with the output gear while allowing separation of the gears when a predetermined loading on the gears is exceeded.

Abstract: The tractor unit of an articulated road vehicle includes an angle sensor unit arranged to sense the angular position of the trailer relative to the tractor and to cause the rear view mirror for the driver to move so that he can always see the trail end of the trailer. According to this invention the sensor unit is deflectable mounted on the tractor unit so that it can be moved out of harms way when hit, e.g., by a trailer.