Warning signs
Steep hill downwards ahead (10%)
What it means
A steep descent is coming, and 10% means the road drops one metre for every ten you travel forward. Long hills on rural and moorland roads are the usual ones. Change down to a lower gear before you start down so the engine helps hold the car back, instead of riding the brakes until they fade.
Highway Code Rule 160 — read it on GOV.UK
More on signs like this: Warning road signs explained: junctions, bends, narrowing roads and hazards
Test yourself on signs like this one
Try a free quiz now, no account needed. Create a free account afterwards to save which signs you've mastered.
Other warning signs
Sign images: Department for Transport, © Crown copyright. Used under the Open Government Licence v3.0.