Traffic calming
Crossing on road hump ahead
What it means
"Humped crossing" is a plate fitted under a warning triangle - the zebra crossing triangle, or the "traffic signals ahead" triangle at a signal-controlled crossing - and means the crossing itself is built on a raised hump. You will meet it on calmed high streets and outside schools. Slow early for both hazards at once - the hump under your wheels and people stepping out - and be ready to stop for anyone waiting.
Highway Code Rule 153 — read it on GOV.UK
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