Under Article 47 of the PRC Road Traffic Safety Law, what is the mandatory driving action when approaching a pedestrian zebra crossing (礼让斑马线)?

1. Honk continuously and accelerate quickly to pass before pedestrians step onto the crossing
2. Decelerate in advance; when pedestrians are crossing or waiting to cross on the zebra crossing, come to a complete stop before the stop line and yield right-of-way
3. Weave around pedestrians through oncoming traffic lanes
4. Flash high-beam headlights to force pedestrians to back away