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AMDifficulty 1/5

A circular sign with a blue background and white symbol, without a red border or red diagonal, generally expresses:

Correct answer

An obligation

An obligation, such as a mandatory direction or minimum speed. The symbol specifies the requirement. Blue alone is insufficient: no-parking signs also contain blue but have red borders and markings. Follow the whole sign’s meaning and other applicable signs.

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All options

  • An obligation

  • A prohibition

  • A general danger

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