You forget to switch off your rear fog lights when you have been driving in fog after it clears. This could:
Damage your car's battery
Lessen your lights' brightness for future use in fog
Be a breach of the law
Explanation: NEVER drive using only your parking or fog lights. It's illegal and unsafe. Use rear fog lights if you have them when visibility is less than around 100 metres. Fog lights should be turned off when visibility is normal.
