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Old 08-17-2010, 03:32 PM   #4
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Originally Posted by troy12n View Post
It's a "man down" test. They are required to do it once a shift or more by either company policy or FRA Policy, I am not sure what.

Those Remote Control beltpacks have sensors that detect rapid movement of the beltpack or impact and issue the "CSX xxxx Operator A (or B) is Down" over the radio to alert the people on the yard channel that the RC Operator is down. It's a safety thing.

You will hear these sorts of things in any yard that has RCO operations.
To add to what Troy said, the "man down" test is also transmitted every time the crew go to work on that particular RCO locomotive. So while you heard "man down", it didn't necessarily mean one of the employees had fallen, but instead testing/activating their pack before starting yard operations.

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