Your vehicle was parked for a long time in the open in moist weather. What must you reckon with when applying the brakes for the first time?

When a vehicle has been parked for a long time in moist weather, moisture can cause a thin layer of rust or water film on the brake discs or drums. This leads to reduced braking action at first because the brakes are less effective until this layer is worn away by use. Additionally, the wheels can have a dangerous tendency to lock because the brakes may grab unevenly as this layer is removed. The engine braking is not affected by moisture in this way, so it doesn't cause reduced braking action. Therefore, drivers should apply the brakes gently at first to allow the brakes to regain full effectiveness safely.