In Finnish road signs and markings, what does a triangular sign showing a steep descent with '10%' (Sign A3.1: Jyrkkä alamäki) indicate?

Answer and explanation

Correct answer: A. Warns of a steep downhill slope where engine braking is needed

  1. Step 1: Under Finnish road sign regulations (Tieliikennelaki 729/2018), warns of a steep downhill slope where engine braking should be used to prevent brake fade. Answer: Warns of a steep downhill slope where engine braking is needed. Why not the others: The remaining options do not match the statutory meaning of Finnish road signs.

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