What does a blue background mean on a road sign?
Answers:
motorway
It is an information sign for services, such as food, gas, hotels, etc.
in the uk its a motorway sign.
Marigold is correct for the USA.
its been 20 years since i passed my test and have not looked at the highway code recently, so worryingly, i have no idea
informa., oh someone already answered.
In the UK, a blue background is used for signs on a motorway, or at the start of a slip road leading to a motorway.
Blue is also used as the background to motorway names and directions on otherwise white (normal roads) or green (trunk roads) signs, so it is easy to distinguish a direction to a motorway from other routes.
Motorway
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