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Difficulty: MediumDriving in Adverse Weather and Low Visibility

You are driving on a two-lane road during a daytime snowstorm where heavy snowfall and blowing wind severely restrict visibility ahead. What is the safest and legally correct procedure to follow in this driving environment?

  1. Reduce speed below the posted limit to suit visibility conditions and activate low-beam headlights.Answer
  2. B
    Maintain the posted speed limit provided your vehicle remains within the marked lane boundaries.
  3. C
    Switch to high-beam headlights to maximize forward visibility through the dense falling snow.
  4. D
    Maintain standard three-second following distance and rely on daytime running lights rather than headlights.

Answer

Reduce speed below the posted limit to suit visibility conditions and activate low-beam headlights.
The correct answer specifies reducing speed to account for reduced visibility and lower road friction in accordance with the Basic Speed Law, while using low-beam headlights to ensure vehicle visibility without causing reflection glare.

Step-by-Step Solution

1
Assess the weather and visibility conditions.
Heavy snowfall creates low-visibility and slippery road surface conditions.
Adverse weather limits stopping distance and visual search range.
2
Apply the Basic Speed Law.
Select a safe operating speed below the maximum posted speed limit.
Drivers must never drive faster than is safe for existing conditions regardless of posted limits.
3
Select appropriate lighting equipment.
Turn on low-beam headlights.
Low beams project light down onto the road surface without causing glare from snow re-reflection and activate rear taillights for trailing vehicles.

Key Concept

Basic Speed Law compliance and correct headlight usage in low-visibility weather
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Topics

Driving in Adverse Weather and Low Visibility

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