In fog you should:

Question: In fog you should:

Answer options:

• Use high beams ✅ Use low beams or fog lights and slow down
• Drive on the shoulder
• Tailgate the car ahead

Correct answer: Use low beams or fog lights and slow down

Explanation: Using low beams or fog lights while slowing down is correct because low beams direct light downward, reducing the blinding glare reflected back by moisture in the fog. Conversely, high beams scatter light off the water droplets, severely impairing visibility. Tailgating is highly unsafe in low-visibility conditions, and driving on the shoulder is both illegal and dangerous due to potential hazards like stalled vehicles. The underlying ICBC rule dictates using low-beam headlights during reduced visibility to prevent backscatter glare while maintaining a safe speed. On the ICBC knowledge test, expect questions about adverse weather to emphasize visibility management and increased following distances.