Flashing programmable highway signs. Don't know if they are the same in other parts, but they're fucking retarded around here. They usually have a somewhat important message on them, like where an accident is, an amber alert, or the best way to get the gun show. At least, I think they do, I only have about a 6 second window where I can see them, so I can't read the bastards unless traffic is already fucked up. They flash on for 3 seconds and then are off for 2 and there's always 2 pages of information even when it's not close to being necessary. For instance, on amber alerts, they seem to think its important that we know which city's police is looking for the kid and what its name is. Fuck that, if I ever see a car I think matches an amber alert, I'm calling 911, not directory assistance to get a number for the constabulary in buttfuck oklahoma.
For the love of all that is good, someone needs consolidate those messages into 1 page when possible, and when not, get rid of the time the sign is completely off.