Managing windscreen fog before it limits your view

A misting windscreen can turn a manageable drive into a rushed search for controls.

A misting windscreen can turn a manageable drive into a rushed search for controls. Learn the demister in the actual vehicle while parked. Clear visibility should be established before moving and maintained throughout the trip.

Understand the situation

Use the owner's handbook to identify the appropriate ventilation and demisting controls. Ask your instructor to explain the difference between front and rear systems in the car. If visibility becomes inadequate during driving, prioritise a safe place to stop rather than attempting a complicated adjustment under pressure.

Before you practise

• Find the demister controls before departure
• Check that glass and mirrors give a clear view
• Plan a safe response if visibility deteriorates

A focused practice session

Before a lesson, rehearse locating the controls without prolonged searching. Explain what each control affects and confirm the resulting view while stationary. On a later suitable drive, discuss whether the setup prevented misting and what you would change before leaving next time.

A situation to discuss

The inside of the windscreen starts misting while you are already concentrating on unfamiliar traffic. Knowing the controls from parked practice reduces the searching task, but a view that remains inadequate still needs a safe stop. Discuss the situation with the instructor. Do not continue with a small clear patch while the rest of the glass hides information. The goal is usable visibility across the areas needed for safe observation.