Answer (Show when driving)

When it is safe, and you won't be distracted, turn on the front screen heater. There is normally a button near the fan and temperature controls, but will depend on the make and model of the vehicle. If there is not a button, you will need to turn the fan speed up, turn temperature control up, and direct the air flow towards the screen. You should also turn on the Air Conditioning (AC) if fitted to the vehicle, as this will help to remove the moisture from the air inside the car.