ray
looked up in model railroaders and railroad model craftsmans found three good articles on using fiber optics mr are april of 1973 and november of 1990 rmc is november of 1970. many uses signals, marker lights on rr cars and 18 wheelers, advertising signs, traffic lights,head lights on road traffic,theater marques, the list goes on and on.the rmc adds the thought of movement blinking lights,flashing signs,strobes on towers,traffic signals that change colors.hope this isn't a info over load.