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you use a green filter in front of the light and you should just get green light passing through as all the other colours are absorbed by the filter. the filter would just be a sort of plastic thing which is green in colour :)
not true. only the blue and red light is absorbed; the green will continue thru
Green
green,orange,red
BLUE
Yellow-green.
cyan light
GREEN
green
red-stop yellow-slow down green-go
Only if there is no opposing traffic to wait for, you can not turn in front of traffic.
Green is a colour the colour of growing grass or leaves. Green is also frequently taken to mean 'on' a green light means that the power is on, 'go' green traffic light mean it is permitted to go forward, 'OK' green is used to mean that everything is all correct.