A zebra crossing is a type of pedestrian crossing used in many places around the world. Its distinguishing feature is alternating dark and light stripes on the road surface, resembling the coat of a zebra. A zebra crossing typically gives priority to pedestrians.
As you approach a zebra crossing as a driver:

look out for pedestrians waiting to cross and be ready to slow down or stop to let them cross.
you MUST give way when a pedestrian has moved onto a crossing.
allow more time for stopping on wet or icy roads.