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You haven't specified which country you are referring to. As this question has appeared in the 'England' category, I can say that all UK motorway signs are in the colour blue.
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∙ 6y ago
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Why is neon used in signboards?
Neon lamps are red.
Which gas is generally used in illuminted signboards?
Neon.
What green color tubes used for?
what results are used for green tubes
Which color is not used by green plants?
all colors are absorbed from the light except the color green, which makes them that color
Why the green color is used for clothes in hospital?
Green is calming.
What is the history behind signboards?
The history behind signboards or the process, "signage" dates all the way back the roman times. In the beginning signs were made from rocks, clay, and stone and they would be used to indicate a city or shop.
Who made the first Germany aeroplane and which color was used?
Fokker. Green color.
What color cancer ribbon is Cholangiocarcinoma?
Is there a particular color ribbon that is used for Gallbladder Cancer?
What does green and cyan make?
The colors of green and cyan can make either a greenish-bluish color or a bluish-greenish color. The exact color would depend on how much of green or cyan is used.
What color is used to make green?
blue and yellow.
What color coolant used in a 93 lumina?
green
Which color is used in the hospital to relax patients?
green
