Hacked Highway Sign Sets Speed Limit At 100 MPH

Message Changed On Construction Sign

POSTED: 9:24 am EDT April 8, 2005

VIENNA TOWNSHIP, Mich. -- The message was too good to be true.

An electronic highway sign on Interstate 75 in Michigan told drivers: "Speed limit 100 mph go go go."

For months, the signboard in Genesee County had been alerting commuters to construction that starts this month.

Someone hacked the sign, which is controlled by a computer through a subcontractor.

State highway officials say they're investigating who changed it and how.

The speed limit in the area is 70.

Bill Shreck, a spokesman for the Michigan Department of Transportation, said officials "weren't amused" by the traffic message.

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