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Topic 4 · Section 51

Night Driving

💡 Use Headlights Properly

  • Turn on headlights 30 minutes after sunset until 30 minutes before sunrise — or just turn them on at dusk.
  • Use high beams on dark roads with no traffic; they can illuminate up to 400 feet ahead.
  • Dim high beams within 500 feet of oncoming traffic or 300 feet behind another vehicle.
  • If another car’s high beams blind you, flash your lights quickly (don’t retaliate), and look toward the right edge of your lane to avoid being blinded.

🐢 Reduce Speed and Increase Following Distance

  • Visibility is reduced at night — increase following distance from 3 to 4 seconds or more.
  • By the time headlights reveal a hazard, you’ll need extra space to react safely.

👀 Keep Eyes Moving

  • Don’t stare straight ahead — scan the sides of the road.
  • Look for reflections from animal eyes or pedestrian flashlights.
  • Watch for faint light patterns indicating intersections or oncoming vehicles.

🔧 Dashboard Lighting

  • Dim dashboard and infotainment lights — bright lights inside reduce night vision.

🚫 Avoid Looking at Oncoming Lights

  • If someone forgets to dim their brights, focus on the road’s right edge or fog line.

😴 Fatigue at Night

  • Your body’s natural rhythm promotes sleep at night — take breaks.
  • Watch for signs: yawning, heavy eyelids, drifting, zoning out.
  • If tired, pull over and nap. Don’t push through fatigue.

👓 Glasses for Night

  • Wear anti-reflective glasses if needed.
  • Clean windshields and lenses to avoid halos and glare.

⚠️ Night Hazards

  • Drunk drivers are more common late at night (1–3 AM).
  • Drive extra defensively — watch for weaving or vehicles without headlights.

🦌 Animals

  • Many animals are active at dusk and dawn.
  • Use high beams in rural areas.
  • Brake firmly for animals — don’t swerve into danger.
  • If you see one deer, assume more are nearby.

🧭 Navigation

  • Landmarks may be hard to spot — use GPS voice prompts and don’t stare at the screen.

Check you have it

179 practice questions cover defensive driving and safe driving practices, each explaining the reasoning behind its answer.

Practise this topic

Source: California Driver's Handbook (DL 600, rev. 6/2025). Edited by Fernando Aguilera. Aprobify is not affiliated with the California DMV.

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