Under New York law, what must a driver do when approaching a crosswalk where a visually impaired pedestrian with a white cane is present?

1. Honk to alert the pedestrian and continue through the crosswalk once they notice
2. Come to a complete stop and remain stopped until the pedestrian has completely crossed
3. Slow down and drive around the pedestrian while they are using the crosswalk
4. Flash headlights to signal the pedestrian to cross while the vehicle keeps moving