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Zorluk: OrtaAdjusting Margins in Wet Weather

In normal dry conditions, the average total stopping distance for a car travelling at 50 mph50\text{ mph} is 53 metres53\text{ metres}. According to The Highway Code, what is the minimum total stopping distance, in metres, required when driving at the same speed on a wet road surface?

Cevap: 106 metres

Cevap

106 metres106\text{ metres}
According to The Highway Code (Rule 126), water on the road surface significantly reduces tyre grip, which means stopping distances in wet weather are at least double those on dry roads. For a car travelling at 50 mph50\text{ mph}, the standard dry stopping distance of 53 metres53\text{ metres} doubles to 106 metres106\text{ metres}.

Adım Adım Çözüm

1
Recall the Highway Code multiplier for stopping distances on wet roads
Multiplier is 22 (stopping distance doubles in wet weather)
Water on the road reduces friction and tyre grip, at least doubling overall stopping distances
2
Multiply the dry stopping distance (53 metres53\text{ metres}) by the wet condition factor (22)
53×2=106 metres53 \times 2 = 106\text{ metres}
To calculate the minimum total stopping distance required under wet conditions at 50 mph50\text{ mph}

Anahtar Kavram

Stopping distances in wet weather are at least double the normal dry road stopping distances.
Tahmini Süre:1m 0s
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Adjusting Margins in Wet Weather

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