Slippery roadNew Zealand
22. Slippery road
A slippery road has reduced tyre grip and can make steering, braking and acceleration less effective. Roads may become slippery because of rain, ice, snow, mud, oil, loose material or other substances on the surface. Drivers should reduce speed, increase their following distance and avoid sudden steering, braking or acceleration. Extra caution is needed in bends, on bridges and wherever the road surface changes unexpectedly.
Wikimedia.org • Karora • CC0
What can make roads slippery in New Zealand?
Be prepared for heavy rain, gravel, frost and ice on alpine roads. A surface can become slippery even if it looks clear, and different parts of the road may have very different grip.
🔗 nzta.govt.nz • New Zealand, NZTA official Road Code — slippery-road
How should you drive on a slippery road in New Zealand?
Reduce speed early, increase the gap to the vehicle ahead and use smooth steering, braking and acceleration. Do not rely on the posted maximum as a safe target when grip is poor.
🔗 nzta.govt.nz • New Zealand, NZTA official Road Code — slippery-road
Does a slippery-road warning sign in New Zealand automatically impose a lower number?
The warning sign highlights a reduced-grip risk; it normally does not itself prescribe a new numerical speed limit. A separate speed-limit sign, temporary restriction or local condition may still apply. Travel below the legal maximum when necessary for safety.
🔗 nzta.govt.nz • New Zealand, NZTA official Road Code — slippery-road
Warning for a slippery road surface.
English • W14-7 • Slippery surface. The road surface may be slippery. Reduce speed and avoid sudden braking or steering.
Sources
🔗 Commons.wikimedia.org
🔗 Nzta.govt.nz • NZTA sign specifications • W14-7
Image via Commons.wikimedia.org
New Zealand Transport Agency • NZTA-Sign-Spec • Source revision 2021-02-03. Wikimedia original unmodified.

Traffic rules
New Zealand