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Zorluk: OrtaStopping and Following Distances

When driving a car at the national speed limit of 70 mph70\text{ mph} on a dry, level motorway with good tyres and brakes, what is the typical total stopping distance required under the UK Highway Code?

  1. A
    75 metres75\text{ metres} (245 feet245\text{ feet})
  2. 96 metres96\text{ metres} (315 feet315\text{ feet})Cevap
  3. C
    73 metres73\text{ metres} (240 feet240\text{ feet})
  4. D
    192 metres192\text{ metres} (630 feet630\text{ feet})

Cevap

96 metres96\text{ metres} (315 feet315\text{ feet})
According to the UK Highway Code, a vehicle travelling at 70 mph70\text{ mph} on a dry, level road requires a thinking distance of 21 metres21\text{ metres} (70 feet70\text{ feet}) and a braking distance of 75 metres75\text{ metres} (245 feet245\text{ feet}), resulting in an overall stopping distance of 96 metres96\text{ metres} (315 feet315\text{ feet}).

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1
Determine the thinking distance for a car travelling at 70 mph70\text{ mph}.
Thinking distance = 21 metres21\text{ metres} (70 feet70\text{ feet}).
Thinking distance is the distance a vehicle travels between the driver perceiving a hazard and applying the brakes.
2
Determine the braking distance for a car travelling at 70 mph70\text{ mph} under dry conditions.
Braking distance = 75 metres75\text{ metres} (245 feet245\text{ feet}).
Braking distance is the distance travelled from when the brake pedal is pressed until the vehicle comes to a complete halt.
3
Calculate the total stopping distance by summing thinking and braking distances.
21 m+75 m=96 metres21\text{ m} + 75\text{ m} = 96\text{ metres} (70 ft+245 ft=315 feet70\text{ ft} + 245\text{ ft} = 315\text{ feet}).
Overall stopping distance is the sum of thinking distance and braking distance.

Anahtar Kavram

Total stopping distance calculation at 70 mph in dry conditions
Tahmini Süre:1m 0s
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Konular

Stopping and Following Distances

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