Road surfaceFlanders
57. Road surface
A road surface warning indicates that the road ahead may be uneven, damaged or in poor condition and could affect the stability, steering or braking of a vehicle. The hazard may include bumps, depressions, potholes, broken pavement or other irregularities in the road surface.
Drivers should reduce speed where necessary, maintain a safe distance and avoid sudden steering or braking when passing over an irregular surface. The exact meaning and appearance of the warning sign vary between countries, so drivers must follow the local traffic signs and regulations.
Wikimedia.org • LimoWreck • CC BY-SA
Warning for a bad road surface.
Which Belgian sign warns about an uneven road surface?
The Belgian A13 warning sign currently warns of a transverse depression or hump in the carriageway that may require drivers to reduce speed significantly.
🔗 codex.vlaanderen.be • Belgian Road Code — articles 8.3, 10.1 and 66.4 (A13)
🔗 wegcode.be • Road Code of 1 December 1975 — 8.3, 10.1 and 66.4 (A13)
Warning for a bad road surface.
English • Traffic sign A13 • Dips or humps.
Français • Signal routier A13 • Cassis ou dos d'âne.
Nederlands • Verkeersbord A13 • Uitholling overdwars of ezelsrug.
Sources
SVG source: Commons.wikimedia.org
Vascer • Public domain. Original SVG unmodified.
🔗 Wegcode.be • Artikel 66. Gevaarsborden (NL)
🔗 Codedelaroute.be • Article 66. Signaux de danger (FR)
What should you do when you see an uneven-road warning sign in Belgium?
Observe the road ahead carefully and adapt your speed to the condition of the road. You should approach at a speed that allows you to pass the irregularity safely without losing control or causing danger.
🔗 codex.vlaanderen.be • Belgian Road Code — articles 8.3, 10.1 and 66.4 (A13)
🔗 wegcode.be • Road Code of 1 December 1975 — 8.3, 10.1 and 66.4 (A13)
Does a Belgian uneven-road warning sign impose a specific speed limit?
No. The uneven-road sign is a warning sign and does not itself establish a numerical speed limit. Drivers must nevertheless adapt their speed to the road condition, and a separate speed-limit sign may impose a lower maximum speed.
🔗 codex.vlaanderen.be • Belgian Road Code — articles 8.3, 10.1 and 66.4 (A13)
🔗 wegcode.be • Road Code of 1 December 1975 — 8.3, 10.1 and 66.4 (A13)

Traffic rules
Flanders