What is the recommended visual scanning pattern that New York driving instructors should teach for approaching intersections?

1. Look straight ahead only because cross traffic must yield at every intersection
2. Left-right-left scan: check left first (nearest threat), then right, then left again before proceeding
3. Use a right-left scan once, without a final check for traffic approaching from the left
4. Look only toward the normal flow of traffic and omit the cross-street scan