When driving a car at the national speed limit of 70\text{ mph} on a dry, level motorway w… — UK Driving Theory Test

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

A
$75\text{ metres}$ ( $245\text{ feet}$ )
$96\text{ metres}$ ( $315\text{ feet}$ )Answer
C
$73\text{ metres}$ ( $240\text{ feet}$ )
D
$192\text{ metres}$ ( $630\text{ feet}$ )

Answer

96\text{ metres}

(

315\text{ feet}

)

According to the UK Highway Code, a vehicle travelling at

70\text{ mph}

on a dry, level road requires a thinking distance of

21\text{ metres}

(

70\text{ feet}

) and a braking distance of

75\text{ metres}

(

245\text{ feet}

), resulting in an overall stopping distance of

96\text{ metres}

(

315\text{ feet}

Step-by-Step Solution

Determine the thinking distance for a car travelling at

70\text{ mph}

Thinking distance =

21\text{ metres}

(

70\text{ feet}

Thinking distance is the distance a vehicle travels between the driver perceiving a hazard and applying the brakes.

Determine the braking distance for a car travelling at

70\text{ mph}

under dry conditions.

Braking distance =

75\text{ metres}

(

245\text{ feet}

Braking distance is the distance travelled from when the brake pedal is pressed until the vehicle comes to a complete halt.

Calculate the total stopping distance by summing thinking and braking distances.

21\text{ m} + 75\text{ m} = 96\text{ metres}

(

70\text{ ft} + 245\text{ ft} = 315\text{ feet}

Overall stopping distance is the sum of thinking distance and braking distance.

Key Concept

Total stopping distance calculation at 70 mph in dry conditions

Estimated Time:1m 0s

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