DOT finds success with use of warning trailers in work zones

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DOT finds success with use of warning trailers in work zones
The Iowa Department of Transportation is again using a special trailer with bright lights and loud sounds in an attempt to warn work crews of impending accidents.
The DOT’s Brad Fleming says the trailer known as an attenuator is pulled behind the last truck in a work crew.
“There is a set of lights around the speaker system that as the operator sees a car approaching that isn’t moving over — he will initially trip the panic lights. That’s just a series of higher intensity amber lights that kick on..and we’ve seen quite a bit of response to that,” according to Fleming. “Most of the vehicles I would say, do move over for the panic lights.”

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