In Norwegian traffic signs and road markings (Skiltforskriften), what does an underskilt showing a number with arrows on both sides (e.g. '↑ 2.5 km ↑') beneath a danger sign mean?

Answer and explanation

Correct answer: C. Hazard extends continuously for 2.5 km

  1. Step 1: Underskilt 804 (Utstrekning) with vertical arrows on either side indicates the continuous stretch (utstrekning) over which the danger applies. Answer: Hazard extends continuously for 2.5 km. Why not the others: the alternative options do not correctly describe the statutory meaning under the Norwegian Sign Regulations (Skiltforskriften).

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