A Colour Light SignalA Signal that conveys its information by coloured lights. More that can display Red, Yellow and Green Aspects from
a single optical assembly. Modern forms employ LEDA Colour Light Signal that uses Light Emitting Diode technology in place of incandescent lamps and coloured filters. LED signals can be arranged to combine the ... More or Fibre Optic
technology; heritage types change aspectAny valid visual indication of a Signal as displayed to the driver. More by placing separate coloured
lenses in front of a single lamp.