When approaching an intersection where the view of cross traffic is severely obstructed by walls or parked vehicles (cruzamento sem visibilidade), what is the correct technique?

1. Creep-and-peep: approach in 1st gear at walking speed, edge forward centimetre by centimetre until sightlines clear, and look both ways before proceeding
2. Accelerate quickly through the intersection to minimize time in the danger zone
3. Sound the horn once and drive through without stopping
4. Close eyes and rely on right-of-way rules