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Difficulty: MediumNight Driving and Headlight Usage

You are driving on a dark, unlit highway at night with your high-beam headlights on. As you gain on a slower vehicle traveling in your lane ahead, at what minimum distance must you switch from high beams to low beams?

  1. 300 feetAnswer
  2. B
    500 feet
  3. C
    100 feet
  4. D
    High beams do not need to be dimmed when traveling in the same lane

Answer

Drivers must dim their high-beam headlights to low beams when within 300 feet of a vehicle they are following.
State traffic laws mandate switching high beams to low beams within 300 feet when following another vehicle from behind to prevent excessive glare from reflecting into the lead driver's eyes via their mirrors.

Step-by-Step Solution

1
Identify the scenario orientation
The driver is following another vehicle in the same direction from behind.
Headlight dimming rules differ depending on whether you are meeting an oncoming vehicle or following a vehicle ahead.
2
Recall standard legal distance thresholds for high-beam usage
The legal threshold for following another vehicle is 300 feet (compared to 500 feet for oncoming traffic).
300 feet provides an effective safety buffer to eliminate dangerous rear-mirror glare for the driver in front.

Key Concept

High-Beam Headlight Dimming Distance Rules
Estimated Time:45s
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Topics

Night Driving and Headlight Usage

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