According to The Official Highway Code, different vehicle speeds and environmental conditi… — UK Driving Theory Test

According to The Official Highway Code, different vehicle speeds and environmental conditions require specific overall stopping distances. Match each driving scenario to its correct total stopping distance.

A car travelling at $20\text{ mph}$ ( $32\text{ km/h}$ ) on a dry road $12\text{ metres}$ ( $40\text{ feet}$ )
A car travelling at $40\text{ mph}$ ( $64\text{ km/h}$ ) on a dry road $36\text{ metres}$ ( $120\text{ feet}$ )
A car travelling at $30\text{ mph}$ ( $48\text{ km/h}$ ) on a wet road $46\text{ metres}$ ( $150\text{ feet}$ )
A car travelling at $50\text{ mph}$ ( $80\text{ km/h}$ ) on a dry road $53\text{ metres}$ ( $175\text{ feet}$ )

Cevap

Matching pairs:

20\text{ mph}

dry matches

12\text{ metres}

(

40\text{ feet}

);

40\text{ mph}

dry matches

36\text{ metres}

(

120\text{ feet}

);

30\text{ mph}

wet matches

46\text{ metres}

(

150\text{ feet}

);

50\text{ mph}

dry matches

53\text{ metres}

(

175\text{ feet}

Each scenario correctly reflects The Highway Code standard: at

20\text{ mph}

dry it is

12\text{ m}

, at

40\text{ mph}

dry it is

36\text{ m}

, at

50\text{ mph}

dry it is

53\text{ m}

, and at

30\text{ mph}

in wet conditions the standard

23\text{ m}

distance doubles to

46\text{ m}

Adım Adım Çözüm

Recall dry stopping distances from The Highway Code for each speed

20\text{ mph} = 12\text{ m}

30\text{ mph} = 23\text{ m}

40\text{ mph} = 36\text{ m}

, and

50\text{ mph} = 53\text{ m}

Total stopping distance equals thinking distance added to braking distance under normal dry conditions.

Apply the wet road weather multiplier to the

30\text{ mph}

scenario

Dry stopping distance of

23\text{ metres} \times 2 = 46\text{ metres}

(

150\text{ feet}

Wet road surfaces reduce tyre grip and double the required stopping distance.

Match each given condition to its corresponding total stopping distance value

All 4 scenarios correctly paired with their respective distance values.

Aligns official dry figures and weather-adjusted safety margins.

Anahtar Kavram

Total stopping distance calculation and the impact of wet weather multipliers according to The Official Highway Code.

Tahmini Süre:1m 15s

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