COLLINSVILLE, Ill. – Hackers are messing with electronic road signs in some states, warning of zombies and raptors down the road. Traffic safety officials aren't amused. The latest breach came during Tuesday morning's rush hour near Collinsville, Ill., east of St. Louis. That's where hackers changed a sign along southbound Interstate 255 to read, "DAILY LANE CLOSURES DUE TO ZOMBIES."

Similar pranks have been pulled in recent days near Indianapolis and in Austin, Texas.

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