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Difficulty: Very hardNight Driving and Headlight Glare Management

A driver is navigating an unlit two-lane rural highway at 55 mph with high-beam headlights engaged. An oncoming vehicle approaches approximately 450 feet away without dimming its high beams, producing intense visual glare. Which sequence of actions must the driver execute to comply with traffic safety laws and maintain vehicle control?

  1. Switch to low-beam headlights immediately, adjust speed downward to match reduced sight distance, and steer by directing gaze toward the right edge of the lane.Answer
  2. B
    Keep high beams active to preserve forward visibility and align the vehicle by looking directly at the solid yellow center line.
  3. C
    Flash high beams repeatedly to warn the approaching driver while accelerating slightly to minimize time spent in the glare zone.
  4. D
    Maintain posted speed and high beams, but alternate closing one eye to retain dark adaptation until the oncoming vehicle passes.

Answer

The driver must switch to low-beam headlights immediately upon coming within 500 feet of the oncoming vehicle, reduce speed to account for reduced sight distance, and guide the vehicle by looking toward the right edge of the travel lane or fog line.
State traffic codes dictate that drivers must switch high-beam headlights to low beams when approaching an oncoming vehicle within 500 feet. When blinded by glare, the safest and legally compliant protocol involves reducing speed to avoid overdriving visibility range and looking toward the right edge of the lane (fog line) to maintain lane position without gazing directly into oncoming lights.

Step-by-Step Solution

1
Evaluate the distance threshold to the oncoming vehicle.
At 450 feet, the vehicle is within the statutory 500-foot threshold requiring low-beam activation.
Traffic laws strictly mandate switching from high beams to low beams when an oncoming vehicle is within 500 feet to avoid blinding the oncoming driver.
2
Manage oncoming glare by shifting visual focus.
Gaze is directed toward the right pavement edge or fog line rather than oncoming headlights or the road center.
Looking toward the right shoulder uses peripheral vision to track the road edge while protecting central vision from night blindness caused by intense headlight glare.
3
Adjust vehicle speed to account for restricted visibility.
Vehicle speed is reduced appropriately.
Lowering beam intensity reduces visible distance ahead; slowing down ensures stopping distance remains within illuminated range, adhering to the basic speed law.

Key Concept

High-Beam Dimming Distances and Headlight Glare Response
Estimated Time:1m 15s
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Topics

Night Driving and Headlight Glare Management

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