What is the meaning of the following traffic sign?

- Mountain road.
- Uneven road surface· Correct answer
- Road-works ahead.
- Speed bumps ahead.

The sign warns of an uneven road. This is a warning sign indicating that the road surface is in poor condition and may cause loss of control or damage to the vehicle.
Sign 101 = uneven road (not roadworks, not mountains)
Confusing an uneven road with a worksite or speed bumps
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