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Zorluk: OrtaStopping and Following Distances

You are driving at a speed of 50 mph50\text{ mph} on a rural road when rainfall creates a wet road surface. Under normal dry conditions, the vehicle's total stopping distance is 53 metres53\text{ metres} (175 feet175\text{ feet}). According to the UK Highway Code, what is the minimum total stopping distance you should allow for in these wet conditions?

  1. A
    53 metres53\text{ metres} (175 feet175\text{ feet})
  2. B
    76 metres76\text{ metres} (250 feet250\text{ feet})
  3. 106 metres106\text{ metres} (350 feet350\text{ feet})Cevap
  4. D
    530 metres530\text{ metres} (1750 feet1750\text{ feet})

Cevap

The minimum total stopping distance on a wet road at 50 mph50\text{ mph} is 106 metres106\text{ metres} (350 feet350\text{ feet}).
According to the UK Highway Code, wet road surfaces reduce tyre friction and at least double overall stopping distances. Doubling the baseline dry stopping distance of 53 metres53\text{ metres} (175 feet175\text{ feet}) at 50 mph50\text{ mph} results in a minimum requirement of 106 metres106\text{ metres} (350 feet350\text{ feet}).

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1
Identify the standard stopping distance on a dry road at the specified speed.
At 50 mph50\text{ mph}, the standard total stopping distance under dry conditions is 53 metres53\text{ metres} (175 feet175\text{ feet}).
Official Highway Code baseline figures provide the starting point for calculating adverse weather adjustments.
2
Apply the appropriate weather multiplier for wet road surfaces.
53 metres×2=106 metres53\text{ metres} \times 2 = 106\text{ metres} (175 feet×2=350 feet175\text{ feet} \times 2 = 350\text{ feet}).
Water on the road reduces tyre adhesion, which at least doubles overall stopping distances.

Anahtar Kavram

Applying weather multipliers to UK Highway Code stopping distances in wet conditions
Tahmini Süre:1m 0s
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Konular

Stopping and Following Distances

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