What should an animal cart driver do when approaching a pedestrian crosswalk (paso peatonal / paso de cebra)?

1. Speed up to beat the pedestrians across
2. Slow down, prepare to brake, and yield complete right of way to any pedestrian who is crossing or about to cross on the zebra crossing, stopping the cart safely before the crosswalk
3. Shout at pedestrians to get out of the way
4. Drive on the sidewalk around the pedestrians