What does the number on the vertical sign indicating a steep descent mean?
Signage: Vertical signs
Explanation
Steep gradient sign: meaning of the number
The number inside the downhill sign indicates the **percentage gradient** relative to the horizontal plane.
Interpretation: **10%** means that for every **100 m** traveled horizontally, you descend **10 m** vertically.
This figure indicates the **steepness of the descent** to adjust speed, gear, and safety distance.
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