Which action is recommended when driving at night?

Dimming the dashboard lights is recommended when driving at night because it helps to reduce glare and allows your eyes to adjust better to the darkness outside. Bright dashboard lights can distract you and make it more difficult to see the road ahead clearly. By lowering the brightness, you can maintain better visibility and focus on the road, which is crucial for nighttime driving when visibility is already limited.

Using high beams at all times can create hazards for other drivers by blinding them, while increasing speed is generally dangerous at night due to reduced visibility and reaction time. Keeping windows slightly open might help with fresh air, but it is not a vital action that enhances driving safety during nighttime conditions like dimming dashboard lights is.