How should you react to this sign?

How should you react to this sign?

AMust switch headlamps onBMust turn up the volume of your stereoCMust drive at high speed

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More Road Signs questions

• When you see this sign you must…
• If you see this road sign…
• This sign warns you of what?
• What is found on the left hand side of the yellow road marking?
• This sign illustrates which of the following:
• What is the purpose of this sign?