Talk:Availability error

"Sorry I'm late -- I hit every red light on the way here" hmm I'm 100% sure traffic lights are operated in a timed order, so if you hit one red light you hit the following lights on red. It's certainly true when driving in Brighton City. I have a distant memory of a short tv documentary on a man who's job was to sort out timing of traffic lights- there seemed to be quite a bit to the art.