UA31: Slippery because of ice

UA31 · Subpanels

Slippery because of ice

På dansk Isglat

What it means
With A31, this plate identifies ice as the cause of the slippery-road warning. Reduce speed and allow a larger stopping margin.
Your action
With A31, this plate identifies ice as the cause of the slippery-road warning. Reduce speed and allow a larger stopping margin.
Common mistake
It specifies the hazard; it does not give a numerical speed or guarantee that all ice is visible.

Source check: 2026-10-16 · Order §13; Traffic Act §41. Road markings order 425, 13 April 2023 · Danish Road Traffic Act 118, 12 January 2026

U Small plates under a main sign. They narrow it or extend it: times, vehicle types, distances.

Learn it in lesson 11 → All signs

In the course

Neighbours of this sign in the U group.
U6.3A sign combination this panel is a part of, takes effect after a right turn in the intersection aheadname onlyU6.4A sign combination this panel is a part of, takes effect after a right turn in the intersection aheadname onlyU7Bicycles and small mopeds may make right turn when traffic signal is redname onlyUA22Schoolname onlyUA41Recommended speed in curvesname onlyUA43Free width at the narrowingUA43.1Narrow roadname onlyUA72Watch out for trainsname only

Drawing from Wikimedia Commons, free of copyright under section 9 of the Danish copyright act. Code and name follow executive order 425 of 13 April 2023 on road marking. Study material, not the legal text.

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