This happens a few times each year, a power outage or storm will knock out the traffic lights at intersections around town. I was always taught to treat this situation as a 4-way stop. All cars come to a stop and then proceed through like there was a stop sign at each corner.
Ever get stuck at a red light where there's absolutely no traffic around? Seems silly to sit there, all alone, just because the light and the law say you have to. One former local TV news anchor has a proposal to change the rules, so drivers can save time and gas -- and maybe even their own lives.