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HOUSTON -- Treva Davis painted hang up and drive on the back window of her vehicle after she was rear-ended by a teen that was texting and driving.

Now she is on the lookout for drivers glued to their phones while driving. She honks at drivers preoccupied by their mobile devices even at traffic lights.

I will obey the laws to get to you, Davis said.

Davis said she is not looking to put herself or others in danger.

If I could legally carry a megaphone in my car and roll my window down and holler at you, Davis added, then I would do that too.

Although some drivers do not agree with her tactics, Davis said she has no plans to end her crusade.

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