MoDOT testing sound cannons in KC

(KSDK) – Missouri Department of Transportation is testing out a new way to keep work zones safe.

MoDOT has been testing acoustic devices called "sound cannons" in the Kansas City area, which can produce a painful tone and a message.

NewsChannel 5 has been told it can easily penetrate the windshield and insulated cab of a car -- even overriding the engine and loud radio.


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