What should a driver do if an oncoming vehicle crosses the centerline into their lane on a two-way road?

1. Flash headlights, sound the horn, reduce speed, and steer right toward the outer shoulder.
2. Accelerate and steer left into the oncoming lane.
3. Brake sharply and stop dead in the center of the lane.
4. Hold your lane and speed, since the other driver is legally obliged to move back.