All the others.

If you cannot avoid the collision, try to maneuver your vehicle in such a way as to lessen the severity of impact. Always wear your seat belts. This is the best thing you can do to protect yourself from injury in the event of a collision.

Reduce your speed and flash your headlights in an effort to warn the other driver. Using your horn may also be effective.

Head for the shoulder of the road, even if you must hit a fence or drive through bushes.