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Difficulty: EasyNight Driving

When operating a commercial motor vehicle at night, it is acceptable to drive at a speed where your total stopping distance exceeds the illumination range of your headlights as long as you remain within the posted speed limit.

Answer: Answer

Answer

False
Safe night driving requires maintaining a speed that ensures total stopping distance (perception distance + reaction distance + braking distance) never exceeds the distance illuminated by the headlights. Exceeding this range is known as overdriving headlights and prevents avoiding road hazards.

Step-by-Step Solution

1
Analyze the relationship between headlight sight distance and vehicle stopping distance.
Headlights provide limited forward vision (typically 250 feet on low beams and 350 to 500 feet on high beams).
Safe vehicle operation at night requires being able to perceive, react, and brake to a complete stop within the visible distance ahead.
2
Evaluate the role of posted speed limits during night driving conditions.
Posted speed limits represent maximum allowable speeds under ideal daylight conditions, not guaranteed safe speeds for limited night visibility.
If your total stopping distance exceeds the distance illuminated by your headlights, you cannot avoid hitting an unexpected obstacle that appears in your beam.

Key Concept

Headlight Sight Distance and Overdriving Headlights
Estimated Time:45s
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Topics

Night Driving

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