What's the most important safety device in your car? Did you answer seat belt or airbag? You might be correct on a sunny day. But you can't safely drive a single city block in a rainstorm or blizzard without your windshield wipers. And they're not only found on cars: planes, trains, boats, off-road vehicles and even space shuttles use windshield wipers. While the blades need periodic replacement, the wiper system itself is considered one of the most reliable of vehicle devices, with a design life average of 1.5 million wipes.
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