Caution: Road work ahead. Road Closed: Please follow alternate route. Caution: Zombies ahead. Wait a second! One of these things does not belong. If you were driving in Oklahoma, you probably could’ve picked out the message that stuck out like a sore thumb. The hacker that got into the transportation department’s system to display that message got a laugh, but here in Pennsylvania, officials with the Pennsylvania Department of Transportation aren’t taking the jokes lightly.