What is the appropriate speed to drive at night?

• Travel as fast as you want to.
• Travel as slow as possible.
• Travel at a speed that allows you to respond safely or stop in the distance lit by your headlights.
  Explanation:

  "At night, your visibility is limited to the range of your headlights. It’s important to drive at a speed that gives you enough time to react to any obstacles or hazards within that distance, ensuring you can stop safely."
• Travel at the highest speed legally allowed.