A proposed statewide moratorium on digital billboards is expected to be officially endorsed Friday by the Los Angeles City Council.

The billboard battle continues, with digital signs and supergraphics entering the fray.

Austin drivers making their morning commute were in for a surprise when two road signs on a busy stretch of road were taken over by hackers. The signs near the intersection of Lamar and Martin Luther King boulevards usually warn drivers about upcoming construction, but Monday morning they warned of "zombies ahead."

Electronic billboards have been sprouting up all over California, flashing digital ads for SUVs and soft drinks and, some say, creating a dangerous distraction for drivers.

If federal and state officials have their way, Nevadans may soon see Wal-Mart or Microsoft logos on highway slopes around their state.