In Portuguese road regulations, what does blue square sign H40 displaying the number 60 in white indicate?

Answer and explanation

Correct answer: D. Advisory recommended speed: speed recommended in good conditions without being legally mandatory

  1. Step 1: Sign H40 identification. Step 2. Square blue sign H40 (velocidade recomendada) advises a safe speed without imposing a legal maximum or minimum. Answer: Advisory recommended speed: speed recommended in good conditions without being legally mandatory. Why not the others: Mandatory minimum is a blue circle; maximum is a red circle.

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