After passing through water, what should you do?

After passing through water, it is essential to ride your brakes gently for a while to ensure they dry out. When a vehicle passes through water, the brake components can become wet, which may lead to reduced braking effectiveness. Gently riding the brakes creates friction, helping to remove any moisture from the brake pads and discs, restoring their full stopping power.

The other choices involve actions that are not advisable in this situation. Increasing your speed can be dangerous as it may lead to a loss of control, especially if the brakes are wet. Switching to low gear does not necessarily assist in drying the brakes effectively and might not be relevant for all vehicles under these circumstances. Applying the brakes hard could lead to skidding or loss of vehicle control, particularly if the road surface is still wet or slick after passing through water. Hence, the appropriate course of action is to gently ride the brakes to ensure safety and vehicle performance.