If a bus is in the direct path of a sighted tornado and evacuation is ordered with no building shelter available, what should the driver direct students to do?

1. Stay beside the bus so it blocks the wind
2. Go to a nearby ditch or culvert, lie face down, and cover their heads while staying far enough away that the bus cannot topple on them
3. Stand under trees to avoid rain
4. Run down the roadway away from the bus