A backup sensor works like a radar. It transmits an
ultrasonic signal from the back of a car. If the signal encounters an object,
it bounces back to a receiver, which can then determine the distance. The
ultrasonic beams work through all kinds of low-visibility situations, and they
are also be helpful in the blind spot.
Some people feel every scratch and bump on their cars.
Every day people back into things--light poles, garage walls, garbage pails,
tossed aside toys and bicycles, shopping carts, and other cars. Immensely more
serious are incidents involving children. These accidents might be avoided with
the aid of Backup Sensors Reversing Aid System.
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