III. Remind participants that their first preference should always be to avoid an adverse weather situation. This module deals with what to do if you havenít been able to avoid it. You will discuss those situations where the school bus driver has to decide what to do.
III.C. Distribute Handout #2, Slippery Roads Overview. Review it with the participants.
III.D.1.a. This is especially true if it hasnít rained for a while.
III.D.2.e. Frost heaves are an upthrust of ground or pavement (they are also called frost bumps) that occur when moist soil freezes. They are most apt to be seen in early spring as the ground thaws and then refreezes.
III.E.4.b. In extremely slick conditions, donít choose too low a gear. The engine compression can prevent the rear wheels from turning fast enough to maintain traction and the school bus may skid. Choose a higher gear and lightly apply the brakes.
III.E.4.c. See Section II, Good Things to Know, Part D, on slowing the school bus.
III.G.1.b. When a vehicle is skidding, the locked wheels lead. This means that, if the rear wheels lock and the vehicle is heading in a forward direction, the back of the vehicle is going to swing around and lead.
III.G.2.e. Watch that no one is behind the school bus when material has been placed under the wheels. The material can be thrown as the school bus gets free.