Amid the discussion about the problems caused by unannounced bri

Avalon - Amid the discussion about the problems caused by unannounced bridge closings, it seems that most people look to a high tech solution. However, in a county filled with people who don't live in a high tech world, that may only be a partial solution. Sign boards near alternate routes of "points of no return" could be activated by high tech means, but serve to alert the hundreds (thousands?) of locals who don't use smart phones.