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Old 08-27-2008, 05:37 PM   #3 (permalink)
Depends on the Day
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This may be a "Road Spray" prevention device. Was the RV'er pulling a vehicle?

I believe UPS was one of the first to implement these on their semi trailers in the late 80's / early 90's (these were mounted above the wheel and hung maybe a quarter of the way into the wheel's diameter).

I asked a driver at the time what they were. It prevents rain or snow spray from interfering with passing or following vehicles -- in an attempt to prevent limited visibility. Nice courtesy -- most likely it's so they wouldn't get rear-ended or side-swiped. I'm not sure if they're using them anymore, but you can see some worn ones on the older trailers.

“If we knew what we were doing, it wouldn't be called research” ― Albert Einstein


Last edited by RH77; 08-27-2008 at 05:43 PM..
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