Created: 1/29/2009 1:58:47 PM 
Austin, Texas -- We've all seen road signs warning of construction ahead.
But some hackers in Austin, Texas, decided to warn drivers of something a bit more spooky - zombies.
Drivers may have gotten a chuckle out of the hacked signs, but city officials are not laughing.
"Some people find that the content of the sign was amusing but the big problem is public safety. Those signs are out their to help our traffic on the roadway to stay safe," said one driver.
Officials said the signs are usually locked, but the hackers cut through the padlock. There is a computer inside the signs that is password protected.
DOT workers said "the hackers had to break in a hack into the computer to do it so they were pretty determined."
Hacking state computers is a class C misdemeanor in Texas.
The city says it will consult with the manufacturer to make something like this more difficult in the future.
