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Difficulty: MediumLighting and Horn Usage

You are driving at night on an unlit road and begin overtaking a slower-moving vehicle. At what point should you switch your headlights from dipped beam to main beam?

  1. A
    As soon as you pull out into the overtaking lane
  2. When you are level with the vehicle you are overtakingAnswer
  3. C
    Only after you have returned to the left lane and established a four-second gap
  4. D
    Flash your main beam repeatedly throughout the entire overtaking manoeuvre

Answer

When you are level with the vehicle you are overtaking
According to Highway Code Rule 114, you must not use high beam in a way that dazzles other road users. When overtaking at night, you should maintain dipped headlights until you are alongside or level with the vehicle being overtaken, at which point you can switch to main beam to illuminate the path ahead safely.

Step-by-Step Solution

1
Assess the risk of headlight glare to the vehicle ahead
Identify that full-beam headlights reflect directly off the mirrors of a leading vehicle, dazzling the driver.
Highway Code Rule 114 strictly prohibits using lights in a manner that dazzles or causes discomfort to other road users.
2
Determine the earliest safe point to increase forward illumination during an overtake
Recognise that once your vehicle is alongside (level with) the overtaken vehicle, your headlight beams project ahead of their cab and mirrors.
Switching to high beam at this exact point restores maximum forward visibility without dazzling the driver beside you.

Key Concept

Headlight management and dazzle prevention during overtaking at night
Estimated Time:45s
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Topics

Lighting and Horn Usage

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