| 摘要 |
A method and Apparatus for monitoring towed vehicles, such as trailers and the like, which are not visible in a rear view mirror of a tow vehicle. The method consisting of the following described steps. Firstly, attach rods to a towed vehicle such that the rods are visible on each side of a tow vehicle to which the towed vehicle is coupled. An unattached end of each of the rods is enlarged. Secondly, attach to each side of a tow vehicle a projection positioned such that the projection is in linear alignment with the enlarged ends of the rods when viewed from a rear view mirror of the tow vehicle. The enlarged ends of the rods ceasing to be in linear alignment with the projection during highway driving signals to a driver of the tow vehicle an alteration of the positioning of the towed vehicle indicating a problem requiring a stoppage of the vehicles.
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