A Portland, Maine road sign is changed to a zombie warning on Wednesday, Oct. 10, 2012. It originally read "Night work 8 pm-6 am. Expect delays." Jeff Peterson/AP hide caption toggle caption Jeff Peterson/AP The Two-Way Motorists Beware! Zombies Ahead! October 11, 2012 A hacker in Maine altered an electric construction sign to warn motorists about zombies. Maybe he's excited about several upcoming zombie events.