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Zorluk: OrtaStopping Distances

A driver travelling at 50 mph50\text{ mph} (80 km/h80\text{ km/h}) along a dry dual carriageway needs to perform an emergency stop. According to The Highway Code, what is the total stopping distance in metres (combining thinking and braking distances) for this vehicle?

Cevap: 53 metres

Cevap

53 metres53\text{ metres}
According to The Official Highway Code, a vehicle travelling at 50 mph50\text{ mph} (80 km/h80\text{ km/h}) has a thinking distance of 15 metres15\text{ metres} (50 feet50\text{ feet}) and a braking distance of 38 metres38\text{ metres} (125 feet125\text{ feet}), giving an overall stopping distance of 53 metres53\text{ metres} (175 feet175\text{ feet}).

Adım Adım Çözüm

1
Identify the standard thinking distance at 50 mph50\text{ mph} (80 km/h80\text{ km/h})
15 metres15\text{ metres} (50 feet50\text{ feet})
At 50 mph50\text{ mph}, the distance travelled during normal reaction time before applying the brakes is 15 metres15\text{ metres}.
2
Identify the standard braking distance at 50 mph50\text{ mph} (80 km/h80\text{ km/h})
38 metres38\text{ metres} (125 feet125\text{ feet})
On a dry, level road with good tyres and brakes, the distance required to decelerate to a complete standstill from 50 mph50\text{ mph} is 38 metres38\text{ metres}.
3
Sum the thinking and braking distances to calculate total stopping distance
15 m+38 m=53 metres15\text{ m} + 38\text{ m} = 53\text{ metres} (175 feet175\text{ feet})
Total stopping distance equals thinking distance plus braking distance.

Anahtar Kavram

Highway Code stopping distance breakdown at 50 mph50\text{ mph} on dry roads
Tahmini Süre:45s
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Stopping Distances

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