Examkin

Soru

Zorluk: OrtaAdjusting Margins in Wet Weather

When driving on a wet road surface, the overall stopping distance increases because wet conditions double both the driver's thinking distance and the vehicle's braking distance.

Cevap: Cevap

Cevap

False. On wet road surfaces, only the braking distance is doubled; thinking distance remains unchanged.
The statement is false because wet weather conditions only reduce tyre grip on the road surface, which doubles the braking distance. Thinking distance is determined solely by the driver's alertness, reaction time, and speed, so it is not doubled by the wet road.

Adım Adım Çözüm

1
Identify the two separate components that make up total stopping distance
Total stopping distance consists of thinking distance (distance travelled during driver reaction time) plus braking distance (distance travelled while the brakes are applied).
Separating the human reaction phase from the physical braking phase is necessary to evaluate how wet conditions affect each component.
2
Analyze the physical impact of a wet road surface on each component
Wet road surfaces reduce friction between the tyres and tarmac, doubling the braking distance. However, surface wetness does not alter the driver's cognitive reaction time, leaving thinking distance unchanged.
Environmental surface friction affects vehicle deceleration mechanics, not human perception-reaction time.
3
Determine the validity of the statement
Because only braking distance doubles rather than both components, the statement is false.
A claim stating that both thinking distance and braking distance double in wet weather is factually incorrect under Highway Code principles.

Anahtar Kavram

Differentiating thinking distance from braking distance in wet weather conditions
Tahmini Süre:45s
Bu soruyu puanla

Konular

Adjusting Margins in Wet Weather

Bu konudan daha fazla soru