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Zorluk: KolayDriving in Fog

Dense fog reduces forward sight distance on a rural route, leaving moisture on the road surface. Which driving procedure should the commercial vehicle operator implement?

  1. A
    Leave auxiliary engine retarders activated to maximize stopping power on the wet pavement.
  2. B
    Follow closely behind the taillights of preceding traffic using standard clear-weather following distance to navigate the lane.
  3. Deactivate auxiliary retarders to prevent drive-wheel skids, use low-beam headlights, and reduce speed to ensure the vehicle can stop within clear sight distance.Cevap
  4. D
    Calculate stopping requirements based only on mechanical brake friction, without adding distance for slower driver perception in limited visibility.

Cevap

Deactivate auxiliary retarders to prevent drive-wheel skids, use low-beam headlights, and reduce speed to ensure the vehicle can stop within clear sight distance.
When operating in fog, atmospheric moisture makes the pavement slick, requiring drivers to disable retarders to avoid drive-wheel skids. Low-beam headlights direct light onto the road rather than reflecting off water droplets, and slowing down ensures the vehicle can come to a complete stop within the visible space ahead.

Adım Adım Çözüm

1
Assess the environmental hazards created by fog.
Identified reduced visibility and slick road conditions caused by atmospheric moisture.
Fog restricts forward sight distance and coats the pavement with water, compromising tire traction.
2
Determine the proper lighting, speed, and braking controls.
Select low-beam headlights to avoid back-glare, reduce travel speed to match sight distance, and disable auxiliary retarders.
Retarders can cause drive wheels to lock up and skid on damp road surfaces.

Anahtar Kavram

Defensive speed, lighting, and vehicle control adjustments in fog
Tahmini Süre:45s
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Konular

Driving in Fog

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