Stopping Distances Alıştırma Soruları — UK Driving Theory Test

Soru 1Soru →

According to The Highway Code, under good, dry road conditions and normal driver reaction times, what is the total stopping distance in metres for a vehicle travelling at $20\text{ mph}$ ( $32\text{ km/h}$ )?

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Cevap: 12

Cevap

The total stopping distance at

20\text{ mph}

under dry conditions is

12\text{ metres}

.

Under normal, dry driving conditions, The Highway Code specifies that at

20\text{ mph}

(

32\text{ km/h}

), thinking distance is

6\text{ metres}

and braking distance is

6\text{ metres}

. Summing these components gives an overall stopping distance of

12\text{ metres}

(

40\text{ feet}

).

Adım Adım Çözüm

1

Determine the thinking distance component at

20\text{ mph}

Thinking distance is

6\text{ metres}

At

20\text{ mph}

, a driver with an average reaction time travels

6\text{ metres}

before physically applying the brakes.

2

Determine the braking distance component at

20\text{ mph}

Braking distance is

6\text{ metres}

Under dry conditions with effective brakes and tyres, the car takes

6\text{ metres}

to decelerate to a complete stop once the brakes are engaged.

3

Calculate the total stopping distance by adding both components

6\text{ m} + 6\text{ m} = 12\text{ metres}

Total stopping distance is defined as the sum of thinking distance and braking distance.

Anahtar Kavram

Total Stopping Distance calculation at 20 mph under normal dry conditions

Tahmini Süre:45s

Soru 2Soru →

A car is travelling at a constant speed of $60\text{ mph}$ ( $96\text{ km/h}$ ) on a dry single carriageway road when the driver notices an obstruction ahead and makes an emergency stop. According to The Official Highway Code, what is the typical overall stopping distance required?

55\text{ metres}

(

180\text{ feet}

)

36\text{ metres}

(

120\text{ feet}

)

73\text{ metres}

(

240\text{ feet}

)

146\text{ metres}

(

480\text{ feet}

)

Cevabı ve açıklamayı göster

Cevap: $73\text{ metres}$ ( $240\text{ feet}$ )

Cevap

The overall stopping distance at

60\text{ mph}

(

96\text{ km/h}

) under dry conditions is

73\text{ metres}

(

240\text{ feet}

).

According to The Official Highway Code, at a speed of

60\text{ mph}

(

96\text{ km/h}

) on a dry road, thinking distance is

18\text{ metres}

(

60\text{ feet}

) and braking distance is

55\text{ metres}

(

180\text{ feet}

). Adding these two values together gives the total stopping distance of

73\text{ metres}

(

240\text{ feet}

).

Adım Adım Çözüm

1

Identify the vehicle speed and road condition

Speed is

60\text{ mph}

(

96\text{ km/h}

) on a dry road surface.

Official stopping distances in The Highway Code are defined based on vehicle speed and good dry road conditions.

2

Determine the thinking distance component

Thinking distance at

60\text{ mph}

is

18\text{ metres}

(

60\text{ feet}

).

Thinking distance is the distance travelled in the time it takes the driver to perceive the hazard and apply the brakes.

3

Determine the braking distance component

Braking distance at

60\text{ mph}

is

55\text{ metres}

(

180\text{ feet}

).

Braking distance is the distance the vehicle travels from the moment the brakes are pressed until it comes to a complete halt.

4

Calculate the total stopping distance

18\text{ metres} + 55\text{ metres} = 73\text{ metres}

(

60\text{ ft} + 180\text{ ft} = 240\text{ ft}

).

Total Stopping Distance = Thinking Distance + Braking Distance.

Anahtar Kavram

Total Stopping Distance is the sum of Thinking Distance and Braking Distance.

Tahmini Süre:1m 0s

Soru 3Soru →

According to The Highway Code, vehicle speed, road surface conditions, and the distinction between thinking and braking distances determine the total stopping distance. Match each driving scenario and specified distance component on the left with its corresponding value on the right.

Soldaki öğeye tıklayın, sonra eşleşen sağdaki öğeye tıklayın

Cevabı ve açıklamayı göster

Cevap

The correct matches pair

50\text{ mph}

dry total stopping distance with

53\text{ metres}

(

175\text{ feet}

),

60\text{ mph}

dry braking distance with

55\text{ metres}

(

180\text{ feet}

),

20\text{ mph}

icy total stopping distance with

120\text{ metres}

(

360\text{ feet}

), and

50\text{ mph}

wet total stopping distance with

106\text{ metres}

(

350\text{ feet}

).

Each scenario correctly matches its corresponding calculated Highway Code metric:

50\text{ mph}

dry total distance is

53\text{ m}

,

60\text{ mph}

braking distance alone is

55\text{ m}

,

20\text{ mph}

on ice increases tenfold to

120\text{ m}

, and

50\text{ mph}

in wet conditions doubles to

106\text{ m}

.

Adım Adım Çözüm

1

Determine total stopping distance for

50\text{ mph}

under dry conditions.

Thinking distance is

15\text{ m}

(

50\text{ ft}

) and braking distance is

38\text{ m}

(

125\text{ ft}

).

\text{Total} = 15\text{ m} + 38\text{ m} = 53\text{ metres}

(

175\text{ feet}

).

Total stopping distance equals thinking distance plus braking distance under normal dry conditions.

2

Isolate the braking distance component for

60\text{ mph}

on a dry road.

At

60\text{ mph}

, the overall stopping distance is

73\text{ m}

(

240\text{ ft}

) with an

18\text{ m}

(

60\text{ ft}

) thinking distance, leaving a braking distance of

55\text{ metres}

(

180\text{ feet}

).

The question specifically isolates braking distance rather than the overall stopping distance.

3

Calculate the maximum stopping distance for

20\text{ mph}

in icy conditions.

Standard dry stopping distance at

20\text{ mph}

is

12\text{ m}

(

36\text{ ft}

). Applying the tenfold ice multiplier gives

12\text{ m} \times 10 = 120\text{ metres}

(

360\text{ feet}

).

The Highway Code specifies that stopping distances can be up to ten times greater on icy roads.

4

Calculate the stopping distance for

50\text{ mph}

in wet conditions.

Standard dry stopping distance at

50\text{ mph}

is

53\text{ m}

(

175\text{ ft}

). Applying the wet weather double multiplier gives

53\text{ m} \times 2 = 106\text{ metres}

(

350\text{ feet}

).

The Highway Code states that stopping distances are at least double on wet road surfaces.

Anahtar Kavram

Highway Code stopping distances vary by speed and are composed of thinking distance plus braking distance, with total distances doubling in wet conditions and increasing up to tenfold on icy roads.

Tahmini Süre:2m 0s

Soru 4Soru →

A car is travelling at $60\text{ mph}$ ( $96\text{ km/h}$ ) on a dry, level road under good driving conditions. According to The Official Highway Code, what is the vehicle's total stopping distance in metres?

Cevabı ve açıklamayı göster

Cevap: 73

Cevap

73 metres

According to The Official Highway Code, a vehicle travelling at

60\text{ mph}

has a thinking distance of

18\text{ metres}

and a braking distance of

55\text{ metres}

, giving a total stopping distance of

73\text{ metres}

(

240\text{ feet}

).

Adım Adım Çözüm

1

Determine the thinking distance for a vehicle travelling at

60\text{ mph}

.

18\text{ metres}

(

60\text{ feet}

)

At

60\text{ mph}

, the driver covers

18\text{ metres}

during reaction time before physical brakes take effect.

2

Determine the braking distance for a vehicle travelling at

60\text{ mph}

on a dry road.

55\text{ metres}

(

180\text{ feet}

)

Under dry, optimal conditions, the car requires

55\text{ metres}

to decelerate to a complete stop.

3

Add the thinking distance and braking distance together.

18\text{ m} + 55\text{ m} = 73\text{ metres}

(

240\text{ feet}

)

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

Anahtar Kavram

Highway Code stopping distance at 60 mph

Alternatif Yöntem

Convert speed directly using the Highway Code reference pattern: at

60\text{ mph}

, thinking distance in feet equals the speed value in feet (

60\text{ ft} = 18\text{ m}

), and braking distance in feet is calculated by multiplying speed by an increasing factor (

60 \times 3 = 180\text{ ft} = 55\text{ m}

), resulting in

240\text{ ft} = 73\text{ m}

.

Tahmini Süre:1m 0s

Soru 5Soru →

Under normal, dry road conditions and standard reaction times, match each vehicle speed to its official total stopping distance as stated in The Highway Code.

Soldaki öğeye tıklayın, sonra eşleşen sağdaki öğeye tıklayın

Cevabı ve açıklamayı göster

Cevap

20\text{ mph}

matches

12\text{ metres}

(

40\text{ feet}

),

30\text{ mph}

matches

23\text{ metres}

(

75\text{ feet}

),

50\text{ mph}

matches

53\text{ metres}

(

175\text{ feet}

), and

70\text{ mph}

matches

96\text{ metres}

(

315\text{ feet}

).

According to The Highway Code, overall stopping distance is the sum of thinking distance and braking distance on a dry, level road. For

20\text{ mph}

, the total is

12\text{ metres}

(

40\text{ feet}

); for

30\text{ mph}

, it is

23\text{ metres}

(

75\text{ feet}

); for

50\text{ mph}

, it is

53\text{ metres}

(

175\text{ feet}

); and for

70\text{ mph}

, it is

96\text{ metres}

(

315\text{ feet}

).

Adım Adım Çözüm

1

Recall the formula for total stopping distance

Total Stopping Distance = Thinking Distance + Braking Distance

Stopping distance consists of both reaction time travel and mechanical braking travel.

2

Apply Highway Code values for each specified speed

20\text{ mph}: 6\text{ m} + 6\text{ m} = 12\text{ m}

;

30\text{ mph}: 9\text{ m} + 14\text{ m} = 23\text{ m}

;

50\text{ mph}: 15\text{ m} + 38\text{ m} = 53\text{ m}

;

70\text{ mph}: 21\text{ m} + 75\text{ m} = 96\text{ m}

.

These are the standard baseline figures established in The Official Highway Code for good, dry conditions.

3

Link each speed entry to its corresponding total distance value

Each speed is accurately paired with its official total stopping distance.

Ensures all four pairs are matched correctly without swapping braking distance or thinking distance.

Anahtar Kavram

Highway Code stopping distances increase non-linearly with speed due to braking distance expanding with kinetic energy.

Tahmini Süre:45s

Soru 6Soru →

According to the official UK Highway Code, total stopping distance depends directly on vehicle speed under good, dry road conditions. Match each vehicle speed on the left to its corresponding typical overall stopping distance on the right:

Soldaki öğeye tıklayın, sonra eşleşen sağdaki öğeye tıklayın

Cevabı ve açıklamayı göster

Cevap

20\text{ mph}

matches

12\text{ metres } (40\text{ feet})

,

50\text{ mph}

matches

53\text{ metres } (175\text{ feet})

,

60\text{ mph}

matches

73\text{ metres } (240\text{ feet})

, and

70\text{ mph}

matches

96\text{ metres } (315\text{ feet})

.

According to The Highway Code table for standard stopping distances on dry roads:

20\text{ mph}

requires

12\text{ metres } (40\text{ feet})

;

50\text{ mph}

requires

53\text{ metres } (175\text{ feet})

;

60\text{ mph}

requires

73\text{ metres } (240\text{ feet})

; and

70\text{ mph}

requires

96\text{ metres } (315\text{ feet})

.

Adım Adım Çözüm

1

Recall the fundamental stopping distance formula

Total Stopping Distance = Thinking Distance + Braking Distance

The Highway Code defines total stopping distance as the sum of reaction/thinking distance and vehicle braking distance.

2

Identify the standard dry-road stopping distances for each speed given in The Highway Code

20 mph = 12 m (40 ft); 50 mph = 53 m (175 ft); 60 mph = 73 m (240 ft); 70 mph = 96 m (315 ft)

These are the official baseline values tested in UK driving theory assessments.

3

Link each vehicle speed to its exact total stopping distance

Each speed is matched with its correct measurement pair.

Fulfills the matching requirement.

Anahtar Kavram

UK Highway Code standard stopping distances in good, dry conditions

Tahmini Süre:45s

Soru 7Soru →

You are driving a car at $40\text{ mph}$ along a single carriageway during persistent rain. According to The Highway Code, what is the typical minimum overall stopping distance required under these conditions?

36 metres (120 feet)

48 metres (160 feet)

72 metres (240 feet)

60 metres (200 feet)

Cevabı ve açıklamayı göster

Cevap: 72 metres (240 feet)

Cevap

72 metres (240 feet)

Under dry conditions at

40\text{ mph}

, a car has a thinking distance of

12\text{ metres}

(

40\text{ feet}

) and a braking distance of

24\text{ metres}

(

80\text{ feet}

), totaling

36\text{ metres}

(

120\text{ feet}

). Because wet road surfaces reduce tyre friction and significantly impair braking efficiency, The Highway Code states that overall stopping distances in wet conditions are at least double those in dry conditions:

36\text{ m} \times 2 = 72\text{ metres}

(

240\text{ feet}

).

Adım Adım Çözüm

1

Determine the baseline stopping distance at

40\text{ mph}

under normal, dry conditions.

Thinking distance is

12\text{ metres}

(

40\text{ feet}

) and braking distance is

24\text{ metres}

(

80\text{ feet}

), giving a total dry stopping distance of

36\text{ metres}

(

120\text{ feet}

).

Official Highway Code calculations split total stopping distance into thinking distance and braking distance.

2

Apply the environmental multiplier for wet weather conditions.

36\text{ metres} \times 2 = 72\text{ metres}

(

120\text{ feet} \times 2 = 240\text{ feet}

).

The Highway Code explicitly states that stopping distances in wet weather are at least double those on dry roads due to reduced tyre grip and increased risk of skidding.

Anahtar Kavram

Highway Code stopping distances at speed and the doubling rule in wet conditions

Tahmini Süre:1m 0s

Soru 8Soru →

According to the official UK Highway Code, what is the total stopping distance in metres for a car travelling at $40\text{ mph}$ on a dry, well-maintained road?

Cevabı ve açıklamayı göster

Cevap: 36

Cevap

The total stopping distance at

40\text{ mph}

is

36\text{ metres}

(

120\text{ feet}

).

At

40\text{ mph}

, a vehicle travels

12\text{ metres}

during the driver's reaction time (thinking distance) and an additional

24\text{ metres}

once the brakes are applied (braking distance) under normal dry conditions. Combining these gives a total stopping distance of

36\text{ metres}

(

120\text{ feet}

).

Adım Adım Çözüm

1

Determine the thinking distance at

40\text{ mph}

12\text{ metres}

Under Highway Code guidelines, thinking distance in metres at

40\text{ mph}

is

12\text{ metres}

.

2

Determine the braking distance at

40\text{ mph}

24\text{ metres}

Under Highway Code guidelines, braking distance on a dry road at

40\text{ mph}

is

24\text{ metres}

.

3

Add the thinking distance and braking distance together

12\text{ m} + 24\text{ m} = 36\text{ metres}

Total stopping distance is defined as the sum of thinking distance and braking distance.

Anahtar Kavram

Total stopping distance equals thinking distance plus braking distance as specified in the Highway Code.

Tahmini Süre:45s

Soru 9Soru →

A car is travelling at $70\text{ mph}$ along a dual carriageway during continuous rain. According to The Highway Code, stopping distances on wet roads are at least double those on dry roads. What is the minimum total stopping distance, in metres, required for the vehicle to come to a complete stop?

Cevabı ve açıklamayı göster

Cevap: 192

Cevap

192 metres

According to The Highway Code, a vehicle travelling at

70\text{ mph}

on dry asphalt requires a thinking distance of

21\text{ metres}

and a braking distance of

75\text{ metres}

, giving a total stopping distance of

96\text{ metres}

. In wet weather conditions, overall stopping distances are at least doubled, resulting in a minimum stopping distance of

96\text{ m} \times 2 = 192\text{ metres}

(

630\text{ feet}

).

Adım Adım Çözüm

1

Identify the standard Highway Code stopping distance components at

70\text{ mph}

on a dry road.

Thinking distance =

21\text{ metres}

; Braking distance =

75\text{ metres}

.

The Highway Code defines baseline stopping distances for each speed bracket under normal dry conditions.

2

Calculate the total stopping distance on dry asphalt by adding thinking distance and braking distance.

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

(

315\text{ feet}

).

Total stopping distance is always the sum of thinking distance and braking distance.

3

Apply the wet weather multiplier to the dry stopping distance.

96\text{ m} \times 2 = 192\text{ metres}

(

630\text{ feet}

).

The Highway Code states that stopping distances on wet roads are at least double those required on dry roads due to reduced tyre grip and friction.

Anahtar Kavram

Highway Code stopping distances at

70\text{ mph}

and the doubling factor in wet weather conditions

Tahmini Süre:1m 15s

Soru 10Soru →

Under good, dry driving conditions, what is the typical overall stopping distance for a vehicle travelling at $30\text{ mph}$ ?

23 metres (75 feet)

14 metres (45 feet)

9 metres (30 feet)

46 metres (150 feet)

Cevabı ve açıklamayı göster

Cevap: 23 metres (75 feet)

Cevap

23 metres (75 feet)

Under dry conditions, a vehicle travelling at 30 mph covers 9 metres (30 feet) during the driver's reaction time (thinking distance) and an additional 14 metres (45 feet) once the brakes are applied (braking distance), giving an overall stopping distance of 23 metres (75 feet).

Adım Adım Çözüm

1

Identify the thinking distance at 30 mph

Thinking distance is 9 metres (30 feet)

The driver travels this distance during reaction time before applying the brakes.

2

Identify the braking distance at 30 mph

Braking distance is 14 metres (45 feet)

The vehicle covers this distance once the brakes are firmly applied.

3

Calculate total stopping distance

9 metres + 14 metres = 23 metres (30 feet + 45 feet = 75 feet)

Total stopping distance equals thinking distance plus braking distance.

Anahtar Kavram

Total stopping distance equals thinking distance plus braking distance

Tahmini Süre:45s

Soru 11Soru →

While driving through a residential area at $30\text{ mph}$ ( $48\text{ km/h}$ ), you encounter a stretch of road covered in compacted snow and ice. According to The Highway Code, what is the maximum total stopping distance you should anticipate under these icy conditions?

23\text{ metres}

(

75\text{ feet}

)

46\text{ metres}

(

150\text{ feet}

)

230\text{ metres}

(

750\text{ feet}

)

140\text{ metres}

(

450\text{ feet}

)

Cevabı ve açıklamayı göster

Cevap: $230\text{ metres}$ ( $750\text{ feet}$ )

Cevap

230\text{ metres}

(

750\text{ feet}

)

According to The Highway Code, the standard stopping distance at

30\text{ mph}

on a dry road is

23\text{ metres}

(

75\text{ feet}

), consisting of

9\text{ metres}

thinking distance and

14\text{ metres}

braking distance. Under icy conditions, severe loss of tyre traction can increase stopping distances up to ten times, resulting in a total distance of up to

230\text{ metres}

(

750\text{ feet}

).

Adım Adım Çözüm

1

Determine the standard total stopping distance on a dry road at

30\text{ mph}

.

Thinking distance is

9\text{ metres}

(

30\text{ feet}

) and braking distance is

14\text{ metres}

(

45\text{ feet}

), giving a total baseline stopping distance of

23\text{ metres}

(

75\text{ feet}

).

The Highway Code establishes baseline stopping distances for vehicles under normal, dry conditions.

2

Apply the official weather multiplier for icy and snowy road conditions.

Multiply the baseline stopping distance by

10

:

23\text{ metres} \times 10 = 230\text{ metres}

(

75\text{ feet} \times 10 = 750\text{ feet}

).

The Highway Code specifies that stopping distances can increase by up to ten times on icy or snow-covered surfaces.

Anahtar Kavram

Highway Code stopping distances under adverse weather conditions (tenfold increase on ice)

Tahmini Süre:1m 15s

Soru 12Soru →

On a dry road, a vehicle travelling at $50\text{ mph}$ ( $80\text{ km/h}$ ) has a thinking distance of $15\text{ metres}$ ( $50\text{ feet}$ ) and an overall stopping distance of $53\text{ metres}$ ( $175\text{ feet}$ ). What is the braking distance of the vehicle?

15\text{ metres}

(

50\text{ feet}

)

38\text{ metres}

(

125\text{ feet}

)

53\text{ metres}

(

175\text{ feet}

)

68\text{ metres}

(

225\text{ feet}

)

Cevabı ve açıklamayı göster

Cevap: $38\text{ metres}$ ( $125\text{ feet}$ )

Cevap

38\text{ metres}

(

125\text{ feet}

)

Total stopping distance consists of thinking distance plus braking distance. At

50\text{ mph}

, subtracting the thinking distance of

15\text{ metres}

(

50\text{ feet}

) from the total stopping distance of

53\text{ metres}

(

175\text{ feet}

) leaves a braking distance of

38\text{ metres}

(

125\text{ feet}

).

Adım Adım Çözüm

1

Identify the relationship between stopping distance components

\text{Total Stopping Distance} = \text{Thinking Distance} + \text{Braking Distance}

According to The Highway Code, stopping distance is always the sum of thinking distance and braking distance.

2

Rearrange the formula to solve for braking distance

\text{Braking Distance} = \text{Total Stopping Distance} - \text{Thinking Distance}

To find the braking distance when the total stopping distance and thinking distance are known.

3

Substitute the given values into the equation

53\text{ m} - 15\text{ m} = 38\text{ metres}

(or

175\text{ ft} - 50\text{ ft} = 125\text{ feet}

)

Performs the calculation using official UK Highway Code values for

50\text{ mph}

.

Anahtar Kavram

Calculation of vehicle stopping distance components

Tahmini Süre:45s

Soru 13Soru →

A car accelerates from $30\text{ mph}$ ( $48\text{ km/h}$ ) to $60\text{ mph}$ ( $97\text{ km/h}$ ) on a dry road. According to The Highway Code, by how much does the vehicle's braking distance increase?

9\text{ metres}

(

30\text{ feet}

)

50\text{ metres}

(

165\text{ feet}

)

41\text{ metres}

(

135\text{ feet}

)

28\text{ metres}

(

90\text{ feet}

)

Cevabı ve açıklamayı göster

Cevap: $41\text{ metres}$ ( $135\text{ feet}$ )

Cevap

41\text{ metres}

(

135\text{ feet}

)

According to The Highway Code, braking distance is the distance a vehicle travels after the brakes are applied until it stops. At

30\text{ mph}

, the standard braking distance is

14\text{ metres}

(

45\text{ feet}

). At

60\text{ mph}

, the standard braking distance is

55\text{ metres}

(

180\text{ feet}

). The increase in braking distance is

55\text{ m} - 14\text{ m} = 41\text{ metres}

(

180\text{ ft} - 45\text{ ft} = 135\text{ feet}

).

Adım Adım Çözüm

1

Identify the braking distance at

30\text{ mph}

according to The Highway Code.

Braking distance at

30\text{ mph}

is

14\text{ metres}

(

45\text{ feet}

).

At

30\text{ mph}

, the total stopping distance of

23\text{ metres}

comprises

9\text{ metres}

thinking distance and

14\text{ metres}

braking distance.

2

Identify the braking distance at

60\text{ mph}

according to The Highway Code.

Braking distance at

60\text{ mph}

is

55\text{ metres}

(

180\text{ feet}

).

At

60\text{ mph}

, the total stopping distance of

73\text{ metres}

comprises

18\text{ metres}

thinking distance and

55\text{ metres}

braking distance.

3

Calculate the difference between the two braking distances.

55\text{ metres} - 14\text{ metres} = 41\text{ metres}

(

180\text{ feet} - 45\text{ feet} = 135\text{ feet}

).

Subtracting the initial braking distance from the final braking distance yields the exact increase in braking distance alone.

Anahtar Kavram

Calculating changes in braking distance independently from thinking distance across different speeds under UK Highway Code standards

Tahmini Süre:2m 0s

Soru 14Soru →

While driving at the national speed limit of $60\text{ mph}$ ( $96\text{ km/h}$ ) on a single carriageway in dry conditions, you are forced to make an emergency stop. What is the total stopping distance according to The Highway Code?

55\text{ metres}

(

180\text{ feet}

)

18\text{ metres}

(

60\text{ feet}

)

73\text{ metres}

(

240\text{ feet}

)

146\text{ metres}

(

480\text{ feet}

)

Cevabı ve açıklamayı göster

Cevap: $73\text{ metres}$ ( $240\text{ feet}$ )

Cevap

73\text{ metres}

(

240\text{ feet}

)

According to The Highway Code, at

60\text{ mph}

(

96\text{ km/h}

) on a dry road, thinking distance is

18\text{ metres}

(

60\text{ feet}

) and braking distance is

55\text{ metres}

(

180\text{ feet}

). Adding these together gives an overall stopping distance of

73\text{ metres}

(

240\text{ feet}

).

Adım Adım Çözüm

1

Identify the thinking distance for a vehicle travelling at

60\text{ mph}

under normal conditions.

Thinking distance =

18\text{ metres}

(

60\text{ feet}

).

Thinking distance is the distance covered from the moment a hazard is perceived until the brakes are physically applied.

2

Identify the braking distance for a vehicle travelling at

60\text{ mph}

on a dry road.

Braking distance =

55\text{ metres}

(

180\text{ feet}

).

Braking distance is the distance travelled while the vehicle decelerates under braking to a complete halt.

3

Calculate the total stopping distance by adding thinking distance and braking distance.

18\text{ metres} + 55\text{ metres} = 73\text{ metres}

(

60\text{ feet} + 180\text{ feet} = 240\text{ feet}

).

Total stopping distance is always the sum of thinking distance plus braking distance.

Anahtar Kavram

Highway Code stopping distance formula: Total Stopping Distance = Thinking Distance + Braking Distance

Tahmini Süre:45s

Soru 15Soru →

You are driving a car at the national speed limit on a dry, clear motorway. In an emergency, what is your total stopping distance according to The Official Highway Code?

73\text{ metres}

(

240\text{ feet}

)

75\text{ metres}

(

245\text{ feet}

)

96\text{ metres}

(

315\text{ feet}

)

192\text{ metres}

(

630\text{ feet}

)

Cevabı ve açıklamayı göster

Cevap: $96\text{ metres}$ ( $315\text{ feet}$ )

Cevap

96\text{ metres}

(

315\text{ feet}

)

According to The Official Highway Code, the national speed limit for standard cars on a motorway is

70\text{ mph}

(

113\text{ km/h}

). Under good, dry road conditions, stopping distance consists of a

21\text{ metres}

(

70\text{ feet}

) thinking distance and a

75\text{ metres}

(

245\text{ feet}

) braking distance, resulting in an overall stopping distance of

96\text{ metres}

(

315\text{ feet}

).

Adım Adım Çözüm

1

Determine the relevant vehicle speed based on the motorway national speed limit for cars.

The national speed limit for cars on a motorway is

70\text{ mph}

(

113\text{ km/h}

).

Stopping distance calculations in The Highway Code correspond directly to vehicle travel speed.

2

Identify the thinking distance and braking distance components at

70\text{ mph}

on a dry surface.

Thinking distance is

21\text{ metres}

(

70\text{ feet}

) and braking distance is

75\text{ metres}

(

245\text{ feet}

).

Total stopping distance is calculated by summing thinking distance and braking distance.

3

Calculate the overall stopping distance.

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

(

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

).

Adding reaction distance to vehicle braking distance provides the complete distance required to bring the car to a halt.

Anahtar Kavram

Total stopping distance equals thinking distance plus braking distance, which at

70\text{ mph}

(

113\text{ km/h}

) on dry roads totals

96\text{ metres}

(

315\text{ feet}

).

Tahmini Süre:1m 0s

Soru 16Soru →

You are driving at a speed of $40\text{ mph}$ ( $64\text{ km/h}$ ) on a wet road surface. According to The Highway Code, the standard thinking distance at this speed is $12\text{ metres}$ ( $40\text{ feet}$ ) and the braking distance on a dry road is $24\text{ metres}$ ( $80\text{ feet}$ ). In wet weather, total stopping distances are at least double those on dry roads. What is the minimum total stopping distance, in metres, required to stop safely under these wet conditions?

Cevabı ve açıklamayı göster

Cevap: 72

Cevap

The minimum total stopping distance in wet conditions at

40\text{ mph}

is

72\text{ metres}

.

Under dry conditions at

40\text{ mph}

, thinking distance is

12\text{ metres}

and braking distance is

24\text{ metres}

, giving a baseline dry stopping distance of

36\text{ metres}

(

120\text{ feet}

). According to The Official Highway Code Rule 126, stopping distances in wet conditions are at least double those on dry roads, resulting in a total of

36\text{ metres} \times 2 = 72\text{ metres}

(

240\text{ feet}

).

Adım Adım Çözüm

1

Calculate the total stopping distance on a dry road

12\text{ m} + 24\text{ m} = 36\text{ metres}

Total stopping distance equals thinking distance plus braking distance under normal dry conditions.

2

Apply the Highway Code wet weather multiplier to the dry stopping distance

36\text{ m} \times 2 = 72\text{ metres}

The Highway Code states that stopping distances are at least double on wet roads due to reduced tyre grip.

Anahtar Kavram

Highway Code stopping distances under adverse weather conditions

Tahmini Süre:1m 30s

Soru 17Soru →

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.

Soldaki öğeye tıklayın, sonra eşleşen sağdaki öğeye tıklayın

Cevabı ve açıklamayı göster

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

1

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.

2

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.

3

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

Soru 18Soru →

You are driving at $30\text{ mph}$ ( $48\text{ km/h}$ ) on a road covered in smooth ice. According to The Official Highway Code, the typical overall stopping distance on a dry road at this speed is $23\text{ metres}$ ( $75\text{ feet}$ ). What is the maximum total stopping distance you should allow for in these icy conditions?

46\text{ metres}

(

150\text{ feet}

)

92\text{ metres}

(

300\text{ feet}

)

230\text{ metres}

(

750\text{ feet}

)

115\text{ metres}

(

375\text{ feet}

)

Cevabı ve açıklamayı göster

Cevap: $230\text{ metres}$ ( $750\text{ feet}$ )

Cevap

230\text{ metres}

(

750\text{ feet}

)

According to The Official Highway Code, stopping distances on icy roads can increase by up to ten times compared to dry conditions. For a vehicle travelling at

30\text{ mph}

where the baseline dry stopping distance is

23\text{ metres}

(

75\text{ feet}

), multiplying by

10

yields a maximum distance of

230\text{ metres}

(

750\text{ feet}

).

Adım Adım Çözüm

1

Identify the base stopping distance for the given speed under normal conditions

At

30\text{ mph}

(

48\text{ km/h}

), the standard stopping distance on a dry road is

23\text{ metres}

(

75\text{ feet}

).

The baseline stopping distance consists of

9\text{ metres}

thinking distance plus

14\text{ metres}

braking distance.

2

Apply the official environmental multiplier for ice and snow according to The Highway Code

Icy conditions increase stopping distances by up to

10

times (

10\times

).

Severe loss of tyre friction drastically lengthens braking distance.

3

Calculate the total required stopping distance on ice

23\text{ metres} \times 10 = 230\text{ metres}

(

75\text{ feet} \times 10 = 750\text{ feet}

).

Multiplying the base distance by

10

provides the maximum expected stopping distance.

Anahtar Kavram

Highway Code stopping distances under adverse weather conditions (tenfold increase on ice)

Tahmini Süre:1m 0s

Soru 19Soru →

A driver travelling at $50\text{ mph}$ ( $80\text{ km/h}$ ) 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?

Cevabı ve açıklamayı göster

Cevap: 53

Cevap

53\text{ metres}

According to The Official Highway Code, a vehicle travelling at

50\text{ mph}

(

80\text{ km/h}

) has a thinking distance of

15\text{ metres}

(

50\text{ feet}

) and a braking distance of

38\text{ metres}

(

125\text{ feet}

), giving an overall stopping distance of

53\text{ metres}

(

175\text{ feet}

).

Adım Adım Çözüm

1

Identify the standard thinking distance at

50\text{ mph}

(

80\text{ km/h}

)

15\text{ metres}

(

50\text{ feet}

)

At

50\text{ mph}

, the distance travelled during normal reaction time before applying the brakes is

15\text{ metres}

.

2

Identify the standard braking distance at

50\text{ mph}

(

80\text{ km/h}

)

38\text{ metres}

(

125\text{ feet}

)

On a dry, level road with good tyres and brakes, the distance required to decelerate to a complete standstill from

50\text{ mph}

is

38\text{ metres}

.

3

Sum the thinking and braking distances to calculate total stopping distance

15\text{ m} + 38\text{ m} = 53\text{ metres}

(

175\text{ feet}

)

Total stopping distance equals thinking distance plus braking distance.

Anahtar Kavram

Highway Code stopping distance breakdown at

50\text{ mph}

on dry roads

Tahmini Süre:45s

Soru 20Soru →

While driving on a well-maintained, dry road at a steady speed of $50\text{ mph}$ ( $80\text{ km/h}$ ), you suddenly need to bring your car to a complete stop in an emergency. According to The Official Highway Code, what is the standard braking distance under these conditions?

15\text{ metres}

(

50\text{ feet}

)

53\text{ metres}

(

175\text{ feet}

)

38\text{ metres}

(

125\text{ feet}

)

76\text{ metres}

(

250\text{ feet}

)

Cevabı ve açıklamayı göster

Cevap: $38\text{ metres}$ ( $125\text{ feet}$ )

Cevap

38\text{ metres}

(

125\text{ feet}

)

According to The Official Highway Code, a car travelling at

50\text{ mph}

(

80\text{ km/h}

) has a total stopping distance of

53\text{ metres}

(

175\text{ feet}

). This total consists of a thinking distance of

15\text{ metres}

(

50\text{ feet}

) plus a braking distance of

38\text{ metres}

(

125\text{ feet}

). Therefore, the braking distance alone is

38\text{ metres}

(

125\text{ feet}

).

Adım Adım Çözüm

1

Recall the components of total stopping distance at

50\text{ mph}

(

80\text{ km/h}

).

Total Stopping Distance = Thinking Distance + Braking Distance

Overall stopping distance is always divided into the driver's reaction phase and the vehicle's deceleration phase.

2

Identify the specific values specified by The Official Highway Code for

50\text{ mph}

on dry asphalt.

Thinking distance is

15\text{ metres}

(

50\text{ feet}

) and total stopping distance is

53\text{ metres}

(

175\text{ feet}

).

Official standards establish fixed reference values under ideal dry conditions.

3

Calculate or isolate the braking distance component.

53\text{ m} - 15\text{ m} = 38\text{ metres}

(

125\text{ feet}

)

Subtracting thinking distance from overall stopping distance gives the exact distance required for the brakes to bring the vehicle to a halt.

Anahtar Kavram

Decomposition of stopping distance into thinking and braking components at 50 mph

Tahmini Süre:45s

Stopping Distances

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